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EyeLink 1000 Plus Installation Guide Tower, Desktop, LCD Arm

1. 0000 5 l 00000 00000 mma 00 O 00 00 00000000000000 Display PC Ethernet nn LIL eeece S V Display Computer E NS EyeLink Host PC Ja 2 ie 00 00000 ununun lt Eyelink Et Figure 2 1 Basic Host PC and Camera Cabling 2 5 Camera Lens Selection The EyeLink 1000 Plus Mounts come with a number of different lenses to be used for unique eye tracking situations Table 1 lists recommended lenses for a range of eye to camera distances as a function of the type of mount being used In all cases eye to camera distance is listed in cm and measured from the surface that the lens screws into to the bridge of the participant s nose Installation and System Cabling 2005 2013 SR Research Ltd Tower Desktop Mount or LCD Arm Mount Long Range Mount Primate Mount with Head Support Remote Mode Monocular Binocular Lens Aperture Size RS s070em wongiandeortangewnesy EAL TP ES RS ee ee eee COO ES ES ee eee ES RS
2. cccccccceeecceeceeecaeeeseeeeeeeeeeeeeeseeenees 2 Figure 2 1 Basic Host PC and Camera Cabling cccccccceeceeeeeeeeeeeeseeeaeeeeeeeseeeaeeeaees 6 Figure 2 2 VPixx Button Boxes left VPixx Button Box Parallel Port Pin Adapter Microsoft Xbox 360 middle and Logitech F310 Right 7 Figure 3 1 Components of the Tower Mount ss 10 Figure 3 2 Clamping Chinrest to Table right Placing and Adjusting Tower Mount11 Figure 3 3 Adjust Height of Tower to Half the Screen Area of Monitor 12 Figure 3 4 Views of the 1000 Plus Tower and Camera 12 Figure 3 5 Camera and Illuminator Cables for Tower Mount 13 Figure 4 1 Install Camera onto the Desktop Mount VV 14 Figure 4 2 Camera and Illuminator Cables from Desktop Mount 15 Figure 5 1 Typical EyeLink 1000 Plus LCD Arm Mount Installation 18 Figure 5 2 1000 Plus LCD Arm Mount Components LCD Arm Mount Base Arm Camera and LCD ASS ey acces esse deco Dons 19 Figure 5 3 Two Configurations of the LCD Arm Mount Base sssssesssessersrrerrrerrrrrrn 20 Figure 5 4 Rearview of the LCD Arm Mount s Camera top and LCD Monitor bottom E E 22 Figure 5 5 Cables Emerging from the Bottom of the LCD Arm ssssssesssserrsrrerrsrrsrrere gt 23 Figure 5 6 Securing the LCD Arm for Disassembling and Transporting 25 Figure 6 1 Typical Primate
3. Figure 3 2 Clamping Chinrest to Table right Placing and Adjusting Tower Mount The Tower mount is quite heavy and cumbersome to move For safety purposes it is recommended that two people participate in setting up this piece of the equipment One person can support the weight of the tower mount while the other lines the spring loaded clamps with holes in the Tower poles When released the clamps secure a peg into the holes of the Tower poles thereby supporting the weight of the tower mount Gently pick up the tower mount with the mirror on the side that is away from you It is recommended that you hold the tower mount near the height adjustment knobs as shown in the center image of Figure 3 2 Be careful not to scratch or touch the mirror Now line the mount up with the vertical posts and gently lower it into position The tower mount should rest about 2 inch into the hole Once the Tower Mount is placed onto the poles you will need to adjust its height by simultaneously pulling the height adjustment knobs away from the poles on both the left and right hand sides see right panel of Figure 3 2 Be careful as you still have to support the weight of the tower mount Make sure that the unit does not fall down the poles If at any point the camera mounting unit does begin to fall releasing the spring loaded height adjustment will cause them to lock into one set of holes in the Tower poles preventing the Tower from falling further Raise
4. The Arm Base configuration on the right of Figure 5 3 works with tables that have only a narrow ledge on the underside as small as 18 mm accommodating tabletop heights of 60 mm 6 cm or 2 3 8 This configuration is created by removing the long bolt that presses against the shim loosening the screw at the bottom of the base reorienting the L shaped bracket so that the short portion is now perpendicular to the base and screwing the bracket back to the base The bolt must now be turned through the short portion of the L shaped bracket in order to meet and apply pressure to the shim on the underside of the table Some light viscosity oil may make the turning of the bolt go more smoothly but keep in mind that oil will result in discoloration of the paint on the LCD Arm Turn the bolt through without using oil if possible To install the Arm Base use the large supplied L shaped Allen wrench to unscrew the black bolt that has a hexagonal opening in its end It will have to be unscrewed enough to allow the shim perched on its end to fit under the table edge as the shim will eventually be the point of contact between the bottom side of the Arm Base and the underside of the table The large underside of the Arm Base will be the point of contact with the Table s top Place the base in position covering the biggest surface area of the table as possible and with the shim as deeply under the table as possible With the center hole of the shim on top
5. 10 1 Installing the Data Translation Analog Card Optional If the analog output option was purchased with your system then insert the Data Translation Analog output card into a free PCI slot Ensure the card s bracket is firmly attached to the PC Close the computer chassis and reconnect the power supply to the computer b gt N n re oY ow D6 oetkollt i 2 a LT TT Figure 10 1 PCI Analog Card 10 2 Installing the PCI Express Parallel Port Optional Your Workstation Host PC should already come with a parallel port for communicating with other devices or receiving button response If an additional PCI express version of the parallel port card is purchased after you received the Host PC then insert the parallel port add on card into a free PCI slot Ensure the card s bracket is firmly attached to the PC Close the computer chassis and reconnect the power supply to the computer Appendix A Optional Host PC Hardware Installation 2005 2013 SR Research Ltd PCL Express PCie Parallel Port Adapt gt bats A t A m T z ROHS Figure 10 2 PCI Express Parallel Port Add on Card Appendix A Optional Host PC Hardware Installation 2005 2013 SR Research Ltd
6. 2 gt 2 gt gt Long Range Mount Installation 2005 2013 SR Research Ltd 8 Testing the Host PC Installation Make sure you have plugged in the power supply of the EyeLink 1000 Plus camera and connected the camera and Host PC using the network cable supplied with the system Now turn on the Host PC If your system shows the Windows Boot Manager interface select the default EyeLink partition see Figure 8 1 Windows Boot Manager Choose an operating system to start or press TAB to select a tool Use the arrow keys to highlight your choice then press ENTER EyeLink Windows 7 To specify an advanced option for this choice press F8 Seconds until the highlighted choice will be started automatically 1 Tools windows Memory Diagnostic ENTER Choose TAB Menu ESC Cancel Figure 8 1 Booting into the EyeLink Partition The EyeLink 1000 Plus Host application will start automatically You will first see an EyeLink 1000 Plus splash screen followed by the Camera Setup view of the Host application Please make sure that you are using the latest version of the EyeLink 1000 Host software The version of the Host software that is being used is displayed on the Splash screen as well as on the lower right corner of the Offline screen The latest Host software can be downloaded from the SR Research support website http www sr support com and can be installed using the System Update tool see section 8 1 A
7. or centered if elevated Desktop Base Possible End of Bore illuminator and camera centered currently there is no replacement first surface mirror available for this head coil Table 5 Philip s Head coils and mount positions The next subsections discuss positioning the Camera Head with the different MRI mounts You may consult the section for your particular mount and then continue to Section 7 9 2 to mount the Camera Head and Illuminator onto the Mounting Bar and the Mounting Bar onto the mount Long Range Mount Installation 2005 2013 SR Research Ltd Figure 7 13 Tray Mount for Siemens family of scanners pictured from above with optional screen left from behind with screen top middle and configured for user supplied screen bottom middle riser block on screen top right and from above bottom right 7 9 1 1 Tray Mount Siemens Full Body Scanners The Tray Mount was designed to be inserted into the end of the bore and to be held in place against the bedrails using nylon bolts at the bottom of the mount The mount pictured in the left side of Figure 7 12 and throughout Figure 7 13 has a post which holds the Mounting Bar on an adjustable ball head The post is attached to the tray s bottom using four nylon bolts and can be flexibly positioned at multiple viewing points in the center of the tray bottom images of Figure 7 13 or off to one side or the other left and top middle images of Figure 7 13 f
8. USB drive the latest version of the software can be downloaded from SR Research Support website https www sr support com forums showthread php t 15 Mount and open the disk image under Mac OS then click on the installer and follow the instructions using the default settings as prompted The EyeLink libraries documentation and source code examples are installed in the Applications gt EyeLink folder e Install the EyeLink Data Viewer if you have purchased the software license The installer disk image is located in the Display PC Installation Mac OS X folder of the EyeLink 1000 Plus Software USB drive the latest version of the software can be downloaded from SR Research Support website https www sr support com forums showthread php t 10 Mount and open the disk image under Mac OS then click on the installer and follow the instructions using the default settings as prompted Data Viewer is installed in the Applications gt EyeLink DataViewer directory e Install the USB HASP Key driver for EyeLink Data Viewer Mount the Hdd_MacOSX dmg disk image to get access to the HASP driver installer Double click on the installer made available by the disk image and follow the instructions using the default settings as prompted e Install the SR Research Experiment Builder if you have purchased the software license The installer disk image is located in the Display PC Installation Mac OS
9. a visible illumination boundary indicating poor lighting of the left portion of the camera s view left and a fully illuminated target indicating intense and uniform illumination right 43 Figure 7 11 Screen Mount used in conjunction with the Elekta Neuromag screen left and a custom built wood frame screen right 46 Figure 7 12 Tray Mount with optional screen for Siemens Trio left Screen Mount middle and the mirrored mount for the Siemens Allegra head only scanner right a 47 Figure 7 13 Tray Mount for Siemens family of scanners pictured from above with optional screen left from behind with screen top middle and configured for user supplied screen bottom middle riser block on screen top right and from above DOCLOMIMTIO AE ein de scan on ere et 50 Figure 8 1 Booting into the EyeLink Partition ccccccceccceeceeeeceeeeeeeeeeeeeeeseeeseeeeenens 60 Figure 8 2 Host Application Camera Setup Screen ss 61 Figure 8 3 Example screen from Web UI Interface displaying File Managert 62 Figure 8 4 Updating Host Software through Web UL cccccceeceeeeeeeeeeeeeeeeeeeeeeeeeeeees 63 Figure 6 5 Updating Screen Dine SiO 1S ease cases ces ae eaneneedaeesenteuecenereoeeweany 65 Figure 8 6 Updating Display Resolution 66 Figure 8 7 Updating Eye to Screen Distance 67 Figure 8 8 Updating Camera to Screen Distance 68 Figure 9 1 Choose Change Adapter Settings Option on 71 Fi
10. Desktop Mount should be aligned with the horizontal center of the monitor For maximum eye tracking range the Mount should be raised so that the top of the illuminator is parallel with and as close as possible to the lower edge of the visible part of the monitor without blocking the subject s view of the screen To keep the Desktop Mount EyeLink Remote Installation 2005 2013 SR Research Ltd viewing distance relatively constant throughout a recording session a comfortable stable chair for the participant is recommended 5 Please follow Section 8 4 Customizing Screen Settings to update tracker configuration Continue to Chapter 8 Testing the Host PC Installation Desktop Mount EyeLink Remote Installation 2005 2013 SR Research Ltd 5 LCD Arm Mount Installation Please follow the steps below to set up the EyeLink 1000 Plus LCD Arm Mount Figure 5 1 illustrates a typical LCD Arm Mount setup and Figure 5 2 illustrates parts of the 1000 Plus LCD Arm Mount as it ships from SR Research under its standard configuration The mount first requires fixing the Arm Base to a sturdy tabletop assembling the LCD Arm components attaching the EyeLink High Speed Camera and then attaching cables The following instructions detail each of these procedures The contents of Figure 5 2 in clockwise direction starting at the top are the Camera and LCD Assembly three Velcro strips rolled and piled cabling emerging from the e
11. Illuminator mounted on a dowel can have their angle adjusted The Allegra Mount supports monocular eye tracking only 7 9 2 Mounting the Camera Head and Illuminator After determining the mount to use it is time to begin assembling the components Based on the mount head coil and whether or not to track binocularly decide which side of the Mounting Bar to place the Camera Head on and which side to place the Illuminator The general considerations below apply to any mount or MRI eye tracking environment Long Range Mount Installation 2005 2013 SR Research Ltd For most purposes placing the Camera Head on the left side of the mounting bar when viewed from behind right side when viewed looking into the camera is a good position to start with This has the camera centrally viewing the eye s and the illumination off to the side Depending upon your tracking situation there are a few considerations in optimal placement of these components e The Camera Head always needs an unobstructed line of sight view to the eye s to be tracked e Which eye will be tracked the dominant eye Left or right Having the Camera Head on the same side as the eye to be tracked may allow one to avoid obstructions e Is binocular tracking required For binocular tracking a more centered camera view is desirable e Illuminator placement does not have to be perfect as long as there are no obstructions causing a shadow to be cast across
12. Ltd 4 Desktop Mount EyeLink Remote Installation The Desktop Mount typically sits just below the Display monitor that the participant is looking at When using the Desktop Mount the EyeLink 1000 Plus eye tracker can be used as an ultra high resolution head supported system and if the Remote Camera Upgrade is purchased also as a remote head free to move eye tracker that requires no head stabilization Please follow the steps below to set up the Desktop Mount 4 1 Mounting the EyeLink 1000 Plus High Speed Camera and Cabling The 1000 Plus Desktop Mounts can be configured to track eye movements up to 2000 Hz monocularly or 1000 Hz binocularly with the 2000 Hz camera upgrade with the head support or 500 hz in the head free Remote mode Each operation mode works optimally with different camera lenses see Table 1 Camera Screw Hole Figure 4 1 Install Camera onto the Desktop Mount Follow the steps below to install the high speed camera see Figure 4 1 1 Place the Desktop Mount on the table Turn the recommended camera lens into the thread on the Camera The 35 mm lens is recommended for the Desktop Mount monocular setup whereas the 16 mm lens should be exclusively used for the Remote tracking 2 Hold the camera parallel to the table and level with the top of the mount align the hole on the camera to the camera screw on desktop mount and then tighten the camera screw see Figure 4 1 Dimples in the camera align with protr
13. PS PE ECC Table 1 Lens Guide for Different Viewing Distances 2 6 Optional EyeLink Response Device Installation Figure 2 2 VPixx Button Boxes left VPixx Button Box Parallel Port Pin Adapter Microsoft Xbox 360 middle and Logitech F310 Right If you have purchased an optional button box response device for the Host PC VPixx Professional button box or the Microsoft Xbox 360 gamepad or a Logitech F310 gamepad see Figure 2 2 it should be plugged into the Host PC before booting VPixx Professional Button Box Installation The VPixx button box plugs into the parallel port on the Host PC motherboard and requires the additional parallel port pin adapter shown in the Figure 2 2 Microsoft Xbox 360 Logitech F310 Gamepad If you have a compatible USB gamepad Microsoft Xbox 360 Controller or Logitech F310 gamepad plug it into a USB port on the Host PC Use an optional USB extender cable if the game pad needs to have a cord longer than one meter NOTE If you have a USB Button Box it must be directly connected to a USB port on the Host PC and cannot be connected through a USB hub Installation and System Cabling 2005 2013 SR Research Ltd 2 7 Optional Analog Card Installation If an optional analog output card was purchased with your system it will require additional components listed below and cabling steps The analog card option is only supported on a Workstation Host PC e Full length PCI Anal
14. Remote should first follow installation instructions for the Desktop Mount then continue below 1 For the Remote mode attach the 16 mm lens shipped standard with a short adjustable focus arm or small wheel to the high speed camera 2 The Display PC monitor should be set such that when the participants are seated and looking straight ahead their eyes are level with 75 of the monitor height 3 Ideally the Desktop Mount should be placed at a distance of about 60 cm from the subject s eyes This means that if you are using a monitor smaller than 20 the Desktop Mount can be placed right in front of the monitor with no extra space between them If you are using a larger monitor it is necessary to move the monitor back while keeping the Desktop Mount at its optimal distance from the subject so as to increase the distance between the subject and the screen while still ensuring that the eye tracker can track the subjects properly the maximum viewing angle of the display should be within 32 horizontally and 25 vertically In such cases measure the distance in millimeters between the lens at the point where the lens connects to the camera to the display monitor and update the last screen of the Screen Settings configuration tool see section 8 4 Customizing Screen Settings This step is very important for proper head movement compensation when recording the eye position data in the remote mode 4 The Camera Screw of the
15. Siemens Trio left Screen Mount middle and the mirrored mount for the Siemens Allegra head only scanner right 7 9 1 Determine the Mount and Configuration to Use After wiring and positioning the components according to Figure 7 7 the first step in setting up the fiber optic system for use will be determining the mount and head coil to use deciding whether binocular tracking is required or desirable and configuring the Mounting Bar appropriately Several mounting options and camera positions for different MRI systems head coil and display screen configurations are possible To date EyeLink 1000 Plus Long Range Mounts have been installed in at least the scanner configurations listed in Table 3 Other configurations may be possible and other scanners and configurations have been successfully tested These are not listed here as we have not yet designed specialized mounts for them or they may not be popular models Customers should feel free to inquire to support sr research com about systems not listed Long Range Mount Installation 2005 2013 SR Research Ltd Siemens Full Body e g Trio Tray Mount 8 birdcage 12 20 32 channel 12 20 32 channel Desktop Base 12 20 32 channel Siemens Head Only e g Allegra Allegra Mount 8 channel birdcage Philips Achieva 8 20 32 channel Desktop Base 8 20 32 channel Table 3 Some Installed Configurations Mount Head Coil Mount Positions Tray Mount 8 Channel
16. birdcage Possible End of Bore monocular tracking only with optional in illuminator and camera centered bore screen OR Screen Mount OR Desktop Base 8 Channel Siemens Unlikely head End of Bore coil top casts illuminator and camera off to one side shadow or centered if elevated Possible End of Bore illuminator and camera centered or off to one side 20 Channel Siemens Possible End of Bore 32 channel bottom illuminator and camera centered or off to one side Long Range Mount Installation 2005 2013 SR Research Ltd End of Bore illuminator and camera on same side of mounting bar with illumination located as peripherally as possible currently there is no replacement first surface mirror available for this head coil Table 4 Siemen s Head coils and mount positions The mounts are pictured in Figure 7 12 with the Tray Mount for the Siemens Trio pictured on the left configured for use with the 32 channel head coil see also Figure 7 13 left and top The Screen Mount attached to a custom built screen is pictured in the middle image of Figure 7 12 and the mirror mount for the Siemens Allegra small bore head only mount appears in the rightmost image The Desktop Base is pictured in Figure 7 1 Mount Head Coil Mount Positions Screen Mount 8 Channel Philips Unlikely head End of Bore coil top casts OR F illuminator and camera off to one side shadow
17. of the bolt begin to tighten the bolt while holding the shim so that it does not fall off of the bolt Pressure will eventually hold the shim in place Tighten as securely as possible Figure 5 3 Two Configurations of the LCD Arm Mount Base LCD Arm Mount Installation 2005 2013 SR Research Ltd 5 3 Assembling the LCD Arm Components Once the Arm Base has been secured to a sturdy tabletop it is time to insert the LCD Arm into the Arm Base At this point you may wish to add one or both of the Arm Extenders that were included with the system 2 5 and 6 extenders 6 cm and 15 cm as these raise the overall height of the LCD Arm Mount Note that using an extender will also raise the lowest point that the LCD Arm Mount s monitor can reach as they simply displace the entire unit vertically The extender shaft simply fits into the silver cup of the Arm Base or into the cup of another extender Pick up the LCD Arm with one hand on each of the components to minimize its components from swinging The round silver shaft at the bottom of the arm fits into the silver cup at the top of the Arm Base or one of the optional extenders already inserted into the Arm Base simply lower the LCD Arm straight into the cup with cabling off to the side of the base that is closest to the Display or Host PC to which the cabling will eventually be attached Several pieces of double side Velcro ship with the LCD Arm Mount in order to assist users
18. or lower the camera mount by pulling to release the height adjustment knobs and by raising or lowering the unit until the knobs are in line with the center of the display monitor see Figure 3 3 This will produce an optimal viewing angle for participants Once the Tower height is set for a normal operation it does not need to be adjusted further The experimenter should adjust the heights of the chair and or chin rest on a participant to participant basis Tower Mount Installation 2005 2013 SR Research Ltd Figure 3 3 Adjust Height of Tower to Half the Screen Area of Monitor EyeLink 1000 Tower EyeLink 1000 Camera Viewing from Top Screw Hole Figure 3 4 Views of the 1000 Plus Tower and Camera 3 2 Mounting the High speed Camera and Cabling The 25 mm lens with a long focusing arm should be used on the EyeLink 1000 Plus Tower Mount Remove the cap from the camera lens Remove the orange protective cover plugged to the camera as well Turn the camera lens into the thread on the camera Hold the camera with the lens facing down so that the focusing arm is on the right Align the hole on the camera to the screw on the top of the Tower and tighten the screw knob from below Please make sure the camera lens is not dusted or scratched After the camera is installed onto the tower mount connect the two illuminator cables that come out of the left side of the head support Tower to the left side of the EyeLink 1000 Plus high speed c
19. power cords monitors etc to the Host PC and your Display PC 2 You are supplied with two black Cat6 Ethernet cables 6 and 15 Choose one that fits your need If you are using a Workstation Host PC plug one end of the network cable to the Ethernet port on the Host PC marked with EyeLink Camera if you are using a laptop computer plug the network cable to the Ethernet port on the motherboard The other end of the network cable will be attached to the Camera once it is placed in its Mount 3 Ifyou use a Workstation Host PC connect one end of the blue network cable provided with your system to the Ethernet port on the Host PC marked with a Display PC Ethernet label If you are using the Laptop Host PC the blue network cable should be plugged to the USB Ethernet converter Connect the other end of the cable to the Ethernet port on the Display PC that you will later configure for use with the EyeLink system Ensure the cable is securely connected at both ends 4 Plug the 12V power supply s small circular end into the EyeLink1000 Plus camera Plug the other end of the power supply into a surge protected power source The camera Installation and System Cabling 2005 2013 SR Research Ltd is powered as soon as it has an electrical supply so a power supply with a switch provides a convenient way to turn the camera on and off EyeLink Host PC Display Computer oo0o00
20. reflections on the host and display monitors The grey walls highlighted in Figure 1 1 are locations where bright light sources will cause reflections e Supply sufficient light in the room The best way to light the room is with ceiling mounted fluorescent lights above and no more than two meters behind the computer monitors Painting the walls light colors or white will maximize ambient light as well Introduction 2005 2013 SR Research Ltd e Avoid environmental distractions Be sure the room can be kept quiet that no distracting items are viewable by the participant and so on It is a good idea to ensure that the participant cannot see the host monitor without turning their head discourage this e Supply a comfortable stable chair for the participants It should not wobble or move when sat in and the back should be firmly attached to the seat springiness encourages some participants to rock forwards and back A chair with a concave back also discourages shifting of the body as does a high back The top of the chair back should be just below the shoulders on an average participant Finally make sure participants can enter and leave the chair easily as the chair will be close to the table with the Display PC monitor Introduction 2005 2013 SR Research Ltd 2 Installation and System Cabling Important Power off computers before connecting or disconnecting any cables Ensure that all cabling is properly connected and c
21. screenshot of the large field of view of the EyeLink 1000 Plus camera Desktop Mount is illustrated in Figure 8 3 Please consult Chapter 3 An EyeLink 1000 Plus Tutorial Running an Experiment of the EyeLink 1000 Plus User Manual for tutorials on settings up the camera calibration and validation But first please review the following sections of this user manual section 8 4 Customizing Screen Settings and Chapter 9 Display PC Hardware and Software Installation Testing the Host PC Installation 2005 2013 SR Research Ltd Image Thresholds Camera Setup Auto Threshold Desktop Monocular Pupil Corneal rt Lin Exit Setup LA KI jel Off line Tracking Mode RER D Sample Rate ax n LE ED Pupil Tracking Centroia RTE IMAGE NOT Image Display AVAILABLE Validate eE 2 Drift Check Threshold Coloring _Image gt Display PC oe EYE NOT Pupil 104 AVAILABLE CR 234 h Use Search Limits _ Mouse futothresh Illuminator Power Eye Tracked Right Ea Figure 8 2 Host Application Camera Setup Screen From any screen on the Host Application you can close the software by pressing Ctrl Alt Q three keys together on the Host PC keyboard or go to the Offline screen and click on the Exit EyeLink button This will bring you to the Web UI interface Figure 8 3 is a screenshot of the Web UI interface running the File Manager a detailed description of this int
22. simple commands X and Y values one can easily shrink the dispersion of the points in the horizontal or vertical dimension respectively The commands as used below shrink to 88 of the X dimension of the display and 53 of the Y dimension of the display Simply include these lines in your EYELINK ELCL EXE FINAL INI or send them over the link as EyeLink commands from Experiment Builder or your favorite programming method Note that default values for this command are 0 88 for X and 0 83 for Y Calibration area proportion 0 88 0 33 Validation arsa Proportion 0 86 0 93 7 10 2 Drift Correction The standard configuration of the 1000 Plus for behavioral laboratory use comes with Drift Correction disabled When the 1000 Plus is used with the Long Range mount small changes in pupil size or head position can translate to larger absolute inaccuracies given the larger eye to camera distances typically used For this reason enabling drift correction may be desirable with the Long Range mount The 1000 Plus User Manual gives detailed information about enabling Drift Correction in several ways Of particular interest for MEG MRI users is online drift correction whereby drift correction can be undertaken while recording is underway Please consult Section 3 11 of the User Manual for Drift Correction options Long Range Mount Installation 2005 2013 SR Research Ltd KEKEKEEEEEEEE EE 2 gt 2 gt gt gt gt gt gt gt gt gt gt CCC EE
23. standard tripods 7 6 Cabling for Long Range System This section describes the basic cabling components for the Long Range 1000 Plus These components need to be integrated into whatever setting the eye tracker is going to be used in Long Range Mount Installation 2005 2013 SR Research Ltd For an MRI Room the cabling for the system appears in Figure 7 7 For MEG or EEG the wiring is similar but power typically passes through an open waveguide rather than going through any sort of patch panel Several possible methods for delivering the DC power connected to the Camera Head and Iuminator are available These alternatives are outlined below and then separately described in more detail Control Room Scanner Room EyeLink Host PC Filtered DC Power H QE or Battery Option i Screen Mount Tray Mount t s Fiber EyeLink 1000 Plus Camera Optic End of Bore EyeLink 1000 Plus MRI Mount Fiber Optic Camera Head Optic Aa Waveguide Long Range Illuminator DC Power Patch Panel EyeLink Display PC DB 9 BNC i Stimulus Rear Projection Ethernet Figure 7 7 Typical MRI Components and Wiring Diagram MEG EEG setups are similar though power is usually passed through a waveguide Fiber Optic Cabling If not already completed connect the Camera Head s fiber optic cable to the supplied fiber optic extension cable The other end of the fiber optic cable goes to the EyeLink 1000 Plus Camera w
24. the eye s to be tracked The Camera Head and Illuminator can be positioned on either side of the Mounting Bar but a peripheral illumination source is likely to be desirable so that the camera can have a view of the eye that is as perpendicular as possible Having a view of both eyes will enable binocular recording or the easy ability to switch between recording left or right eye something that may not be possible when the Camera Head is more peripherally placed Having said this there may be situations e g the Siemens 32 channel head coil or the 8 channel head coil used with the Siemen s Philips and General Electric Scanners where more peripheral placement of the Camera Head hence central placement of the Illuminator and monocular only recording is necessary For instance if the head coil is blocking the Camera Head s view when it is centrally positioned then moving the Camera Head more laterally may be necessary to acquire an unobstructed view In such cases the eye to be tracked will most likely remain the same across all subjects to prevent having to reconfigure the mount ona subject by subject basis as this can be a more time consuming 5 10 minute procedure After determining which side to place the Camera Head and Illuminator slide these components onto the Mounting Bar but do not yet tighten them into place A second consideration regarding the Camera Head is whether it needs to be level for monocular tracking or angle
25. the software 5 Wait for the InstallShield Wizard to finish and click FINISH to complete installation 6 Open the Display PC Installation gt Windows gt SR Research Experiment Builder folder 7 Copy the SREB_ exe to the computer desktop Run the program by double clicking the icon and follow the instructions from the InstallShield Wizard Display PC Hardware and Software Installation 2005 2013 SR Research Ltd 9 2 3 USB License Key Installation If you purchased either the EyeLink Data Viewer or SR Research Experiment Builder software you will have been provided with a USB license key with your order To install the software driver for the USB license key follow these steps 1 From the Windows Start menu select Start gt All Programs gt SR Research gt Install HASP Driver 2 Follow the instructions from the InstallShield Wizard to install the software 3 Wait for the InstallShield Wizard to finish and click FINISH to complete installation 4 Insert the USB Key into an available USB port on the Display computer The USB key should start to glow red indicating that the key has been recognized by the system 9 2 4 Setting up 1000 Plus Network Connection You must have an Ethernet port in your Display Computer for the connection to the EyeLink Host PC Allow Windows to install drivers for it if it is new hardware then follow these instructions to configure the TCP IP network protocol These instruc
26. thin dotted line The camera is placed above a 45 hot mirror which reflects IR light but is transparent to visible light The reflection of the IR light provides an image of the eye to the camera The subject views the stimulus source such as a computer monitor through the mirror The illuminator module is mounted and angled so as to illuminate the eye via the mirror as well the path from illuminator to eye is represented by the heavy broken line The illuminator should be angled to maximize illumination of the eye while minimizing bright spots and shadows on the face For human subjects this may require placing the illuminator to the temporal side of the tracked eye to reduce nose and forehead bright spots and shadows on the temporal side of the eye socket The illuminator is normally located significantly closer to the eye than in the Tower mount typically 180mm from front of illuminator to eye This distance results in an eye illumination level of 1 0 mW cm at the eye which is comfortable for extended viewing with a reasonably sized corneal reflection The EyeLink 1000 Plus illuminator bracket is designed to provide a rigid connection between the illuminator module and the camera This is essential for pupil CR difference tracking mode as any motion of the illuminator relative to the camera will appear as eye rotation artifacts This is also true to a lesser extent for the pupil only eye tracking mode if the CR is positioned within the
27. who may wish to wrap the Velcro around the arm components to secure it before lifting This can prevent the arm from swinging while it is being moved The EyeLink 1000 Plus LCD Arm Mount s Camera and LCD Assembly holds an LCD computer monitor the high speed camera in the level position and an infrared illuminator light source These are affixed as a single unit that can be easily lifted using handles that are attached to each side of the LCD monitor Facing the back of the monitor grip the handles and guide the shaft of the tilter mechanism into the hole at the top end of the arm Gently wiggle the assembly until the shaft is fully inserted into the arm Some configurations of the LCD Arm may require weights at the end of the table opposite the Arm Base to offset the LCD Arm s weight The LCD Arm is fairly heavy with the entire apparatus weighing in at approximately 11 kg or 25 lbs Some possible configurations of the LCD Arm extend the monitor over empty space away from the table s edge placing the weight of the Camera and Monitor Assembly away from the support of the table To prevent tipping the table needs to be large heavy and sturdy or weighted at the end opposite from which the LCD Arm will extend Caution should be used when first testing the range of the LCD Arm in case the table is not strong enough to properly distribute the weight of the apparatus If the table begins to tip while extending the LCD Arm out into spac
28. will be on the same side of the Mounting Bar as the eye to be tracked The most important factor in positioning the Camera Head and Illuminator is that there is an unobstructed line of sight from the camera to these components For monocular recording the typical position for the Illuminator will be more peripheral than the Camera Head and on the same side of space as the eye to be tracked This ordering may not be necessary but can help to directly illuminate the eye to be tracked while cutting down on potential shadows Given these recommendations the configuration in Figure 7 1 depicts the ideal positioning for Long Range Mount Installation 2005 2013 SR Research Ltd tracking a participant s right eye left eye if viewed through a mirror as in many MRI setups assuming that the camera has an unobstructed view past the head coil 7 3 Securing the EyeLink 1000 Plus Fiber Optic Camera Head The Fiber Optic Camera Head first attaches to a bracket that has several guide holes oriented at a right angle to the camera rightmost image of Figure 7 3 The holes interface with guide pins on the Camera Head Clip pictured at the left of Figure 7 2 The guide pins on the Camera Head Clip slide into guide holes on the Camera Head Bracket to determine the camera orientation When the pins are in the center pair of holes the camera will be horizontally oriented and parallel with the Mounting Bar the Camera Level position When the holes are alig
29. 005 2013 SR Research Ltd reversal the pieces need to be gently rocked back and forth to wiggle them free As the LCD Arm is fully loaded this requires the rocking of large portions of the entire unit To minimize the potential for damage as many pieces as possible may be removed before attempting to remove the Camera and LCD Assembly from the LCD Arm or the LCD Arm from the Arm Base For instance removing the camera cover and camera is advised Important It is recommended that two people participate in disassembling the LCD Arm Mount Read these instructions through and prepare a place to put the disassembled pieces before attempting disassembly To disassemble the unit one option is to lift the LCD Arm and Assembly together from the Arm Base A second option is to remove the Camera and LCD Assembly from the LCD Arm first and then to remove the LCD Arm itself from the Arm Base In either case double sided Velcro strapping can assist in securing parts of the LCD Arm to make disassembly more manageable Once the LCD Arm has been removed from the Arm Base removal of the Arm Base involves loosening the bolt from applying pressure to the shim until the Arm Base can slide freely off of the table Be careful when handling the shim as it may have sharp edges created around the center hole from the pressure applied to it 5 8 1 Option 1 Remove LCD Arm and Camera Assembly as a Unit First fold the LCD Arm as pictured in Figure 5 6 The
30. 2013 SR Research Ltd 7 1 Description of the Components 32 7 2 Overview of Setting the Mount 33 7 3 Securing the EyeLink 1000 Plus Fiber Optic Camera Head 34 7 4 Securing the MMA LOL ea en en ae np on 36 7 5 Affixing the Mounting BAR caen enc ess nos dneni reared 36 7 6 Cabling tor Long Rance SySlENI o sccosacogarcnntasveraorseneoaenrenmnummaraaneods 36 1 7 Configuring the Long Range Camera Hardware 40 7 7 1 Acquire Preliminary Measurements 40 7 7 2 Assemble the Long Range Mount Components 41 7 7 3 Align the Camera Head and Illuminator 42 7 7 4 Put the Mount into Position and Find the Eye cccccccccseceeeeeeseeeeneeseeeees 43 7 8 Installation in a MEG Room ss 44 7 9 NP RS OR en de 46 7 9 1 Determine the Mount and Configuration to Use 47 7 9 2 Mounting the Camera Head and Illluminator 52 LM The Head COL MORE Ent de aa E EE tas 53 7 9 4 Measuring and Using the Eye to Camera Distance 54 7 9 5 Align the Camera Head and Illuminator 55 7 9 6 Puta Volunteer Confederate in the Scanner and Find the Eye s 55 7 9 7 Adjust Image Thresholds and Focus the Lens 56 7 10 Calibration and Drift Correcting with the Long Range System 97 7 10 1 Calibrating Atypical Spatial Areas 57 Te OT T 61810 T Rr rere enn ee mre E Perr tr e
31. Camera and LCD Assembly can be lowered so that the camera bracket is beneath the bottom limb of the LCD Arm Raising it slightly can put pressure on the cable cover which may mark the cover so some packing material may be inserted between these to prevent marking if desired Wrap Velcro soft side against the LCD Arm is recommended around the LCD Arm so that it will not extend when lifted see Figure 5 6 Although full LCD Arm extension is prevented by the camera bracket pressing against the cable cover the possibility exists for body parts to become pinched The entire LCD Arm with intact Monitor Assembly can now be lifted from the Arm Base One person may need to apply downward pressure to the table while the other does the lifting so that the table is not merely lifted off the floor Some wiggling of the LCD Arm and its shaft may be required to make it come free from the Arm Base s holder cup Once free the unit may feel top heavy so be sure to have a strong grip Gently lower the unit onto an awaiting soft foam surface such as the inside of a hard shell case molded for transport and storage of the LCD Arm Mount 5 8 2 Option 2 Remove Camera Assembly then Remove the LCD Arm Fully extend the LCD Arm and ensure there is nothing preventing the upwards lifting of the Camera and LCD Assembly One person will have to steady the LCD Arm and put downwards LCD Arm Mount Installation 2005 2013 SR Research Ltd pressure on the top of t
32. Command line el trackerapp 000005 1 108 665 webui network status 0x2 000006 1 108 774 Threadi main thread Priority 15 CPU Affinity 0xc 000007 1 108 789 Checking CPUID for constant TSC counter 000008 1 108 790 CPUID eax 0x8000000 in eax 80000008 ebx 00000000 ecx 00000000 edx 00000000x level 0x8047c18 000009 1 108 793 TSC is constant speed based on eax gt 0x80000007 000010 1 108 993 Open file elcl exe preinit ini with sr _fopen failed 000011 1 108 995 Could not find elcl exe preinit ini in current dir cfg file name preinit ini 000012 1 109 047 Looking in prog dir for elcl exe preinit ini 3 4 m Figure 8 3 Example screen from Web UI Interface displaying File Manager 8 1 Host Software Update The EyeLink 1000 Plus host software installed on the eye tracker can be updated through the Web UI interface First download the latest version of the Host software from our support website http www sr support com go to Downloads EyeLink Host Software EyeLink 1000 Plus Host software Copy the file to a computer that runs the Web UI Click on the Configuration icon on the File Manager toolbar and then select System Update Now choose the Update tab see Figure 8 4 and click on the Browse button to locate the intended host software installer and then click Update Wait until the host software is updated please be patient as this process may take a few minutes to complete In some rare cas
33. EyeLink 1000 Plus Installation Guide Tower Desktop LCD Arm Primate and Long Range Mounts Version 1 0 SR Research ox EyeLin Copyright 2013 SR Research Ltd EyeLink is a registered trademark of SR Research Ltd Mississauga Ontario Canada Read instructions before use For indoor use only Intertek Safety Mark Compliance of this product with applicable standards is certified by Intertek an independent testing agency Separate electrical and electronic collection Iuminators comply with 60825 1 or 62471 safety standards CLASS 1 LED DEVICE IEC 60825 1 Ed 1 2 2001 Fiber optic interface to OC camera head complies with laser safety standards CLASS 1 LASER DEVICE IEC 60825 1 Ed 1 2 2001 FCC Statement NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment can radiate radio frequency energy and may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at the users expense CISPR WARNING This is a Class A product In domestic environments this product may cause radio interference in which c
34. Mount Installation cccccccccceecceeeeeeeeeeeeeeeseeeseeneeesenees 28 Figure 7 1 EyeLink 1000 Plus Long Range Mount affixed to a Desktop Base left and pictured with a variety of lenses and Tripod Adapter right 32 Le 2013 SR Research Ltd Figure 7 2 Mounting Bar and Clips note Guide Pins on the Camera Head clip left 32 Figure 7 3 Fiber Optic Camera Head with lens left attached to the Camera Head Bracket center Guide Holes in the Camera Head Bracket accept Guide Pins from CAE PC E E E eee 34 Figure 7 4 Bracket in the Level Position left and Angled right without the Camera Head top and with the Camera Head bottom 35 Figure 7 5 Illuminator attached using two brass thumbscrews left or single thumbscrew center rotates around the Mounting Bar when its knob is released COS SEE cee E A 35 Figure 7 6 Tripod Adapter left Desktop Base middle and Mounting Bar attached to the Tripod Adapter using Two Brass Bolts right 36 Figure 7 7 Typical MRI Components and Wiring Diagram MEG EEG setups are similar though power is usually passed through a waveguide 37 Figure 7 8 Male DB 9 connector left to right gender changer with female connector showing BNC connectors LEMO connectors and Battery System 38 Pisure 7 9 Focusing the IUMIAALO SE cn cn 42 Figure 7 10 Pointing the Camera
35. ST Une ot ppt char CHARGE Figure 7 8 Male DB 9 connector left to right gender changer with female connector showing BNC connectors LEMO connectors and Battery System The first two power solutions listed above are designed to pass line filtered DC power through a patch panel or filter plate into an RF shielded room such as an MRI room For MEG or EEG setups a waveguide is used to pass the power cable into the isolated room Some shielding of this cable may be required if RF noise is detected CAUTION The DB 9 D SUB connectors on the power cables are magnetic including the cable that attaches inside the MRI scanner room Exercise caution if carrying the cable into or around an MRI scanner especially near the bore D SUB Patch Panel Solution In the case of the first power cabling solution listed above DB 9 D SUB connectors see two left images in Figure 7 8 are used on either side of the patch panel filter plate The AC converter should plug into the supplied RF line filter before connecting to the patch panel filter plate in the control utility room Inside the scanner room another DB 9 D SUB cable connects power from the patch panel to the Camera Head and Illuminator One or more gender changers may be required depending on the gender of the DB 9 D SUB connectors available Long Range Mount Installation 2005 2013 SR Research Ltd Note that the DB 9 D SUB connector contains ferromagnetic material
36. While it is possible to rotate the camera by 90 this will swap X and Y pupil position data Contact SR Research for information about operating in this configuration e Itis possible that an extra bright reflection may appear above the pupil in the eye image as the illuminator may directly light the eye as well as through the mirror A small baffle may be required to control this Continue to Chapter 8 Testing the Host PC Installation Primate Mount Installation 2005 2013 SR Research Ltd 7 Long Range Mount Installation 7 1 Description of the Components The Long Range Mount consists of a Mounting Bar for the Camera Head and a focusable Long Range Illuminator see Figure 7 1 left In the figure the Camera Head is on the left and the Long Range Illuminator is on the right though these lateral positions are reversible Both the Camera Head and the Long Range Illuminator are affixed to the Mounting Bar using circular clips that tighten onto the bar by turning a Knob see Figure 7 2 The Camera Head attaches to the Camera Head clip which can be positioned at either a level or angled orientation while the Long Range Illuminator attaches to an Illuminator Mounting Clip in a flexible manner so that the illumination can be adjusted vertically and horizontally to fit the tracking situation Figure 7 1 EyeLink 1000 Plus Long Range Mount affixed to a Desktop Base left and pictured with a variety of lenses and Tripod Adapter righ
37. X folder of the EyeLink 1000 Plus Software USB drive the latest version of the software can be downloaded from SR Research Support website https www sr support com forums showthread php t 9 Mount and open the disk image under Mac OS then click on the installer and follow the instructions using the default settings as prompted Data Viewer is installed in the Applications gt ExperimentBuilder directory e Configure the network connection to the EyeLink 1000 Plus Host PC Set the IP address to 100 1 1 2 and subnet mask to 255 255 255 0 You can do this by opening the System Preferences Apple menu item then select System Preferences and click on the Network Icon Next go to your computer s Built In Ethernet device select Manually on the Configure pop up menu and enter the above IP address and subnet mask see Figure 9 3 Click Apply to apply these new settings Display PC Hardware and Software Installation 2005 2013 SR Research Ltd 6800 Network a gt ShowAll Q Location testlocation Status Cable Unplugged Either the cable for Ethernet is not plugged in or the device at the other end is not responding USB Sr oo Configure IPv4 Manually Not Connect FireWire IP Address 100 1 1 2 Not Connected Subnet Mask 255 255 255 0 Router DNS Server Search Domains Click the lock to prevent further changes Assistme R
38. a portion of the screen i e a bottom corner of the projected area will become difficult to track if it is located outside of the camera s view Floor Long Range Mount Installation 2005 2013 SR Research Ltd guides marking centered screen positions are recommended Some sites have used the screen mount attached to other surfaces such as a shelf or even a tripod to hold the eye tracker rather than using the Desktop Base 4 Tripod The Mounting Bar can be removed and attached to a MEG friendly tripod not supplied using the plastic Tripod Adapter and the tripod placed at the participant s feet in front of or just below a projection screen The tripod is used to adjust the view of the camera by moving the illuminator and camera head together Typical viewing distances for such a setup are longer as the tripod must be far removed from the E subject Figure 7 11 Screen Mount used in conjunction with the Elekta Neuromag screen left and a custom built wood frame screen right 7 9 MRI Installation Before beginning installation in an MRI environment please be sure to familiarize yourself with the earlier portions of this chapter This section is essentially duplicating Section 7 7 but with specific mention of the MRI environment mounts common head coils and components Installation in MRI settings will vary as different sites often have unique solutions for presenting visual stimuli Placement of th
39. a screen capture of what you see and email that to us support sr research com 8 3 EyeLink Data Storage All eye tracker recording data files EDF and log files LOG that are created during an eye tracking session will be saved to the ELCL DATA folder of the Host PC You can download the files using the File Manager see section 2 1 1 File Manager of the EyeLink 1000 Plus User Manual 8 4 Customizing Screen Settings To correctly compute visual angles saccade amplitudes and eye velocities the EyeLink 1000 Plus eye tracker needs to know the physical characteristics of your setup Any time you change your physical configuration for example if a new monitor is used the eye to screen viewing distance is changed etc you should use the Screen Settings tool to verify whether the parameters accurately reflect your current setup The Screen Settings can be accessed by clicking on the Configuration icon Los on the File Manager toolbar and then select Screen Settings icon CE The first three parameters of the Screen Settings interface Screen Dimensions Display Resolution and Eye to Screen Distance are important for all setups whereas the last parameter Camera to Screen Distance is important only for users of remote mode 8 4 1 Screen Dimensions The Screen Dimensions screen lets the eye tracker know the size of the Display PC monitor that is being used in the experiments All sc
40. able to the port marked as EyeLink Display Ethernet on the Host Computer or to the supplied USB Ethernet converter if you are using a laptop Host PC Connect the other end of the Ethernet cable to the Ethernet port on the Display PC that you will later configure for use with the EyeLink system Ensure the cable is securely connected at both ends 5 6 Adjusting the Tension Points on the LCD Arm Occasionally through use of the LCD Arm some of the joints or the hydraulics may require adjustment Each joint can have the tension adjusted so as to require more or less force to MOVE Tension adjustment points are indicated by hexagonal screws on the LCD Arm and can be adjusted using the Allen wrenches supplied Recall that all hexagonal screws on the LCD Arm are in Imperial units Loosening a joint typically turning counterclockwise too much may make it so that it does not stay in the desired position so tighter tension turning clockwise is generally preferred LCD Arm Mount Installation 2005 2013 SR Research Ltd 5 7 LCD Arm Mount Adjustments for Monocular and Remote Recording The 1000 Plus LCD Arm Mount can be used for highly accurate monocular recording with head stabilization in which case the LCD Arm Mount is merely an alternative to the Desktop or Tower Mount options or in Remote mode without head stabilization In either case the 1000 Plus requires that some information about the physical setup be pre confi
41. ad their eyes are level with 75 of the monitor height 3 Check the eye to screen distance so that the maximum viewing angle of the display screen will be within 32 degrees horizontally and 25 degrees vertically If you are using a large wide screen monitor this means that there will be some gap between the camera and monitor Desktop Mount EyeLink Remote Installation 2005 2013 SR Research Ltd 4 The desktop mount should be placed at a distance of 40 to 70 cm from the observer measured from the camera screw to the chinrest posts with the illuminator and eye camera facing the participant The ideal tracking distance is from about 50 to 55 cm 5 For maximum eye tracking range the top camera screw should be aligned to the center of the monitor The Desktop Mount should also be raised so that the top of the camera and illuminator is as close as possible to the lower edge of the visible part of the monitor without blocking the subject s view 6 Please check that the chinrest is horizontally centered with the monitor Adjust the tilt of the monitor if there are any reflection issues 7 Please follow Section 8 4 Customizing Screen Settings to update tracker configuration 4 3 EyeLink Remote Hardware Adjustment for the Desktop Mount The default version of the EyeLink Remote uses the Desktop Mount and an EyeLink 1000 Plus Camera programmed for Remote viewing Users who are exclusively interested in installing the EyeLink
42. along with a fiber optic cable Long Range Mount Installation 2005 2013 SR Research Ltd or with a rechargeable battery system contained within the room to eliminate the need for cables to enter Typically an AC power supply is located outside the room and plugged into an isolated source as even this inexpensive solution produces low noise The Host PC too is situated outside of the MEG room though the camera images can be transferred and projected into the room via an application running on the Display PC making camera setup easily accomplished As the only connection between the room and the Host PC is fiber optic no other isolated power outlets are required The eye tracker can be easily removed from the MEG room when not in use for either space conservation reasons or to use it in a behavioural lab Apart from requiring a Host PC in the vicinity setup and take down are fast with only minimal adjustment required between subjects Once configured simply place the eye tracker in the room as appropriate when eye tracking is desired plug in its two DC power leads and its single fiber optic lead power up the system and begin recording There are three mounting options that have proven useful for MEG at the current time 1 Desktop Base The Mounting Bar can be attached to a Desktop Base such as in Figure 7 1 To get a good view of the eye the base is typically placed on a shelf bridging the space above the participant s lap This allow
43. amera plug the cable marked with R to the port marked with R and the one with L to the remaining port Plug in the black Ethernet cable to the Ethernet port on the high speed camera Connect the camera power supply that was provided with your system to the power connector on the left side of the EyeLink 1000 Plus camera Tower Mount Installation 2005 2013 SR Research Ltd Figure 3 5 Camera and Illuminator Cables for Tower Mount 3 3 Adjusting Head Support Components The height of the forehead and chinrest can be adjusted by loosening the knobs on both sides of the Tower After sliding the chinrest to the desired position re tighten the knobs e Set up the monitor and chinrest so that the chinrest is centered on the monitor and the monitor is horizontally aligned with the chinrest HINT measure from the left and right knobs on the chinrest to the left and right sides of the top of the display area of the monitor these should be equal e Adjust the tilt of the monitor and height of the forehead rest Ideally these should be set so that the top of the display is at about the same height as the forehead rest and the display is tilted up slightly The tilt can be changed if there are any reflection issues Please follow Section 8 4 Customizing Screen Settings to update the tracker configuration Continue to Chapter 8 Testing the Host PC Installation Tower Mount Installation 2005 2013 SR Research
44. and should be handled with caution when transporting the cable near an MRI scanner or when connecting the cable to the patch panel inside the scanner room BNC Patch Panel Solution In the case of the second power cabling solution listed above the power comes from the AC converter and plugs into a cable with red and white color coded BNC lines see third image from the left in Figure 7 8 that attach to the control utility room side of the patch panel Inside the scanner room a second cable with two BNC plugs leads from the patch panel terminating with a DB 9 D SUB connector that attaches to a third cable with a DB 9 D SUB connector on one end and LEMO connectors to power the Camera Head and Illuminator on the other Note that the DB 9 D SUB connectors contain ferromagnetic material and should be handled with caution near an MRI scanner It is important that a solid connection between DB 9 D SUB connectors exist between the second and third cables mentioned above These cables should have their DB 9 D SUB connectors bolted down before entering the scanner room and use caution when carrying the cable in the scanner room The BNC connectors of the cable coming from the AC power converter attach to the patch panel filter plate BNC terminals of the control utility room and similar BNC connectors of the joined second and third cables attach to the BNC terminals on the filter plate inside the shielded room It is CRITICAL that the c
45. as well as the width and height of the projected image This time the measurement is in millimeters Use these values to follow Section 8 4 Customizing Screen Settings and to modify the PHYSICAL INI file settings on your Host PC 7 9 5 Align the Camera Head and Illuminator Follow the instructions from Section 7 7 3 to align the Camera Head and the Illuminator so that no matter where the camera is pointing it is well lit Having performed the alignment outside of the bore put the eye tracker into position For an alternative approach to aligning the Camera Head and Illuminator with the mount in place see the following section 7 9 6 Puta Volunteer Confederate in the Scanner and Find the Eye s To aid in the fine positioning of the camera and illuminator have the Display PC projecting the global image of the camera as you finely adjust the camera and illuminator position by moving the Mounting Bar Be sure it is the global image that is being projected as this will show the entire range of the camera and make it easier to get the camera s field of view to include the eye At this point it will be easiest to have a volunteer in the bore with the head coil and head coil mirror in place as though ready to be scanned The volunteer should be able to report line of sight to both the Illuminator and the Camera Head when the mirror is tilted at an angle yielding a good view of the entire area where the stimulus is to be displayed A
46. ase the user may be required to take adequate measures WARNING Changes or modifications not expressly approved by SR Research Ltd could void the user s warranty and authority to operate the equipment This includes modification of cables removal of ferrite chokes on cables or opening cameras or connectors WARNING Opening or modifying cameras and connector will void the warranty and may affect safety compliance of the system No user serviceable parts inside contact SR Research for all repairs EN 2013 SR Research Ltd CONTACT ADDRESS SR Research Ltd 150 A Terence Matthews Crescent Ottawa Ontario Canada K2M 1X4 Fax 613 482 4866 Phone 613 271 8686 Toll Free 1 866 821 0731 North America only Email support sr research com Sales http www sr research com Support http www sr support com 2013 SR Research Ltd D Table of Contents L IDETOQUCUON eee anse ee entente ame ss cac rene 1 1 1 Behavioral Laboratory Installation Suggested Equipment Layout 1 2 Installation and System Cabling ss 4 2 1 DO CAI a a a a di E 4 2 2 Pre Installation CHECKIISE 0s iasicscscas cons dscevessveredsens soiree oteentitesteeses 4 2 3 S CH ES CRC a ta on 5 2 4 Y NS ened E E E ES 5 2 5 Camera Lens CAO de Esenin 6 2 6 Optional EyeLink Response Device Installation 7 2 7 Optional Analog Card Installation 8 3 Tower Mou
47. cco ne nat een rrr ene a ee 58 8 Testing the Host PC Installation 60 8 1 Host Soitware WU DG AUS x aia nc cio ti decetu es teaudecavsavcsocioeracdOnueassbucnwosoonecmease ie 62 8 2 Troubleshooting TST CHON Sorrerari NENEA es 63 Crd Os Big E COR RO RS A E ee ree 63 8 2 2 ERROR Can t find Gige Camera ss 63 8 3 By Circ Dala LOLA CC aa a en A EA 64 8 4 CUSLOMIZINIS Screen SEUN S escisiones aa deu ends 64 8 4 1 Sereen DINONSIONMS 2 222 ram encens siete eastinendterdsaacernesiedvbene tereactiee 64 0142 Display RESOMON ne annee eee net rate dues cul me 65 8 43 Eye to Sereen DiIStante ane eee a ee re 66 8 4 4 Camera to Screen Distance sisi 67 2013 SR Research Ltd LE 9 Display PC Hardware and Software Installation 69 9 1 Display PC Hardware Installation 69 9 2 Windows NS AN AO Sas ne eee des 70 9 2 1 Installing the EyeLink 1000 Plus Experiment Programming Kit 70 9 2 2 Installing the EyeLink Data Viewer and Experiment Builder Software 70 92 3 USB License Key ISG OR nes a dessert 71 9 2 4 Setting up 1000 Plus Network Connection 71 9 3 MAC OS RS OAI iE n Ni EA ine ETE 72 10 Appendix A Optional Host PC Hardware Installation 75 10 1 Installing the Data Translation Analog Card Optional 75 10 2 Installing the PCI Express Parallel Port Optional 75 Figures Figure 1 1 Suggested 1000 Plus System Layout
48. creen so that the operator can reach in to adjust the position of the Mounting Bar and focus the lens It is expected that during Camera Long Range Mount Installation 2005 2013 SR Research Ltd Setup and calibration the image from the camera will be projected onto the screen either the optional Tray Mount screen or the screen provided by the user so that the effects of the operator s adjustments can be monitored For binocular recording the post holding the Mounting Bar should be centered as pictured in the bottom right images of Figure 7 13 Use with the Siemen s 32 Channel Head Coil For use with the 32 channel Siemens head coil monocular only the post needs to be displaced to the side of the eye to be tracked The mounts in the left image in Figure 7 12 and also Figure 7 13 left and top are all configured for tracking a subject s right eye if used with the 32 channel Siemen s head coil Note that placement of the illuminator is as peripheral as possible and that the Camera Head is as far toward the center of the Mounting Bar as possible This may shift the placement of these components from the recommend positions on the scale but they remain separated and importantly have a more lateral view of the eye through the mask of the head coil It is feasible that both the Illuminator and Camera Head be placed on the same side of the Mounting Bar to make the camera view slightly more peripheral To optimize the eye tracking the
49. ction with the 1000 Plus and the Long Range Mount 7 10 1 Calibrating Atypical Spatial Areas 7 10 1 1 Customized Calibration Target Positions Given the confines of an MRI scanner and different screen and head coil configurations the standard calibration of the entire screen area may not always be appropriate For instance if a display projection eliminates the ability of the subject to view the corners of the display e g so that the bottom part of the display can use more of the bore s area to present the stimulus calibration targets presented in the corners will not be viewable by the subject and the standard calibration cannot proceed Similar issues can arise if the head coil blocks part of the projection screen e g with the Siemens 32 channel head coil or some 8 channel head coils This presents a problem if one is using the default approach of calibrating the entire screen as calibration targets may appear in locations that cannot be viewed by at least one of the eyes some of the time The EyeLink calibration target positions can be customized so even if the area to calibrate is not rectangular targets can be delivered anywhere in an automated fashion Having an observer or two with highly variable head sizes report from in the bore on the monocularly viewable areas of your display with each eye and map out the display coordinates that define the viewable area A set of custom calibration points can be generated
50. d for binocular tracking See Section 7 3 for detailed steps regarding angling the Camera Head for binocular recording 7 9 3 The Head Coil Mirror The Head Coil Mirror signal needs to be clear and stable for a good eye tracking signal A first surface mirror with good infrared reflecting properties is desirable The default mirrors provided by head coil manufacturers is typically not a first surface mirror resulting in extra Long Range Mount Installation 2005 2013 SR Research Ltd reflections which can interfere with the image of the pupil and CR and typically reduces illumination This reduces the accuracy of the eye tracker SR Research strives to make available good quality first surface mirrors with the silver reflective coating on the front surface rather than the back surface and with a high infrared transmitting coating for popular MRI systems Use of such a mirror yields an improved image signal and cuts down on the number of extra refraction artifacts that can pollute the camera image If building your own head coil mirror try to ensure that a first surface mirror is used Put the desired mirror on the head coil The goal is to align the illuminator and camera with the mirror so that reflected infrared from the illuminator lights up the eye to be tracked while the mirror reflects the image of the eye back to the camera To achieve this direct line of sight from the camera and illuminator via the head coil mirror i
51. djust the focus of the lens by turning the lens barrel to roughly focus the lens so that at least what you are looking at is clear Use any landmarks of the head coil such as writing to orient your pointing of the camera having the volunteer make recognizable movements such as winking might help The threshold coloring of the Host computer may assist in finding the eye Long Range Mount Installation 2005 2013 SR Research Ltd but keep in mind that if you would rather see the image uncolored you can turn the coloring off and on by toggling the Threshold Coloring button of the Camera Setup screen Adjust the Mounting Bar of the eye tracker to change the Camera Head s view The eye needs to be clearly visible in the camera s global view and ideally not too close to the edges of the camera s view If operating in monocular mode be sure only one eye is present in the global image When the system is capable of tracking the eye crosshairs will appear on the pupil and corneal reflection indicating that the system is capable of picking up the eye If the observer can clearly see the infrared points of the illuminator 890 nm the 940 nm Iuminator may be invisible as well as having line of sight down the barrel of the lens then the camera and illuminator are close to the correct position Have the volunteer report on how the camera should be adjusted to achieve their ability in seeing down the camera barrel Note that this is an alte
52. e away from the table place the Arm apparatus back above the table surface and add weight e g the Display computer to the table surface opposite where the Arm is extending Repeat this procedure until it is clear that the apparatus is stable LCD Arm Mount Installation 2005 2013 SR Research Ltd 5 4 Mounting the EyeLink 1000 Plus High Speed Camera The EyeLink 1000 Plus LCD Arm Mount requires that the high speed Camera be attached It may have already shipped this way or you may have to attach a camera that was part ofa different mounting system To affix the EyeLink 1000 Plus camera first remove the cover that obscures the camera and illuminator from the bottom front of the Camera and LCD Assembly Two thumbscrews on the underside of the assembly hold the cover in place simply loosen the thumbscrews and the cover will slide off in the forward direction Mount the camera on the LCD assembly On the front of the camera is a threaded hole that the camera screw from the LCD Arm Mount will go into This will secure the camera A knob is attached to the opposite side of the camera screw so that it is easy to turn the screw into the camera hole If there is not enough room for the camera between the monitor and the camera assembly then more space can be gained by moving the assembly further from the monitor Undo the hex bolts holding the bracket with the camera assembly to the monitor and move this forward 1 or 2 sets of holes until th
53. e pupil position and click the left mouse button on either the Host or Display PC The camera image for the eye should now be displayed in the zoomed thumbnail view If the pupil is detected a green box and crosshairs will also be drawn Use the left or right cursor key to select the zoomed camera view Adjust the camera focus by turning the focusing ring of the lens You may do the adjustment from the side opposite to the illuminator to prevent the camera image or the illumination to the eye from being blocked by your reach Look closely at the eye image on the zoomed view while turning the focusing ring until the eye image is clear If a colored circle CR signal appears near the pupil the best focus will minimize the size of this circle The system is now ready to test Please see the tutorial in the User Manual though you may wish to skim the contents of Chapter 8 first 7 8 Installation ina MEG Room The EyeLink 1000 Plus Long Range mount is non ferromagnetically optimized made mostly of plastic aluminum and brass The Fiber Optic Camera and Long Range Illuminator minimize electrical noise and attach to the Mounting Bar using brass thumbscrews plastic clips and aluminum brackets All of these features coupled with excellent shielding make the system ideal for the MEG environment The Camera Head Illuminator and Mount are located inside the MEG room The system is powered with DC power entering the room through a waveguide
54. e screen the head coil type and other site specific factors must be considered in positioning of the eye tracker Please refer to Figure 7 7 for a diagram of the component placement and wiring within an MRI environment Only the Screen Mount and Tray Mount are shown in Figure 7 7 but other mounts are similarly positioned Long Range Mount Installation 2005 2013 SR Research Ltd The Fiber Optic Camera and Long Range Illuminator are designed to operate at the opening of the bore or even in the bore where appropriate mounts exist Typically it is desirable to position the Mounting Bar with the Camera Head and Illuminator directly below the visual display This will use some potential space at the bottom of the visible display area but both Camera Head and Illuminator need to be visible to the participant Infrared reflecting first surface mirrors on the head coil optimize the eye tracking signal with mirrors for several models of head coil available from SR Research A list of tested configurations appears in Table 3 5 along with comments about positioning the mount Where binocular recording has been achieved it is noted as possible in Table 4 and 5 because it relies on the ability to view both eyes simultaneously in the angled camera view which may be dependent on the stimulus display the lens required and other site specific physical factors that may vary between installations Figure 7 12 Tray Mount with optional screen for
55. e your changes Click Close to exit from the network card dialog To test the network connection start the EyeLink 1000 Plus tracker and start the Track application from Start gt Programs gt SR Research gt EyeLink gt Track The link should connect and the screen will display instructions This application allows you to practice participant setup and test the system If the message Cannot initialize link appears the TCP IP protocol or crossover cable is are not properly configured If the connection times out it is probably due to the network card being improperly configured or because the network cable is not connected to both PCs On the Workstation Host PC the Ethernet cable should be connected to the Ethernet port with an EyeLink Display Ethernet label On the Laptop Host PC the Ethernet cable should be connected to the USB Ethernet converter Make sure you first plug in the USB converter before powering up the laptop 9 3 Mac OSX Installation To use Mac OS X as a Display computer with the EyeLink 1000 Plus system various EyeLink software components should be installed on the computer The installation process consists of the following basic steps Display PC Hardware and Software Installation 2005 2013 SR Research Ltd e Install the Mac OS X Display Software The installer disk image is located in the Display PC Installation Mac OS X folder of the EyeLink 1000 Plus Software
56. ere is enough room for the camera to slip in between the monitor and the camera assembly Retighten the hex bolts and then proceed to attach the camera to the LCD assembly Dimples on the camera fit into protrusions on the mount in order to ensure the right positioning of the camera which should be aligned level with the top surface of the part of the mount holding the camera screw Tighten the knob until the camera is secured Next replace the cover by sliding the slots on the cover s bottom around the thumbscrews on the underside of the assembly Tighten the thumbscrews and adjust the cover so that it is minimally obscuring the IR illuminator and the camera Figure 5 4 Rearview of the LCD Arm Mount s Camera top and LCD Monitor bottom LCD Arm Mount Installation 2005 2013 SR Research Ltd 5 5 Attaching the Cables Integrated into the LCD Arm Mount is the cabling required for the EyeLink 1000 Plus system and the computer monitor camera and LCD monitor power cables monitor audio cable SVGA video cable and the Ethernet cable After assembling the LCD Arm Mount components inserting the LCD Arm into the Arm Base and attaching the camera all of the cables need to be connected For all cables emerging from the LCD Arm location descriptions assume a view of the Camera and LCD Assembly from the back underside of the monitor see Figure 5 4 bottom Guide the cables to the side of the camera and illuminator support bracket t
57. erface can be found interface the Host application can be started by clicking on the tracker icon on the toolbar To turn off the Host computer click the Shutdown Host button in the Offline screen of the Host Application or click the Shutdown button on the Web UI and then press the power button In very rare cases you may find yourself at the command prompt of the operating system You can then either type t to restart the tracker application f to go back to the Web UI interface or shutdown to turn off the host computer Testing the Host PC Installation 2005 2013 SR Research Ltd Hrefox SR Research EyeLink FileManager a v 4 100 1 1 1 FileManager html C Ej Google P amp Er Elo DE S BEER Ad m 0 ae BLA EAN Tracker p lt B ec D data Shutting Down Host PC Es Le N N N N N a erctive A 5 E 5 E E error html eye log eye001 log eye002 log eye003 log eye004 log i Peu mm eye005 log eye006 log di i lim Ifs cdO V Details of eye log in elcldata OO Preview Edit L LELLLLLLLLLLLELLLELLELLLLLELLELLELLELELELLELLELLLLELLLLELLEE Session beginning Mon Sep 09 2013 04 26 30 PM Tracker version 5 00 Build date Sep 6 2013 RRR RRR RRR RR RRR RRR RRR RRR RR RRRRRRRRRRRRRRRRRRRRRRRmH cme 000001 1 108 384 Messages before el logger is ready 000002 1 108 393 EyeLink CL GIGE v 5 00 compiled Sep 6 2013 000003 1 108 412 End of the messages before el logger is ready 000004 1 108 491
58. es users may want to revert back to an earlier version of the Host software The System Update tool has a Rollback tab that allows you to choose a particular version of the host software to revert to Testing the Host PC Installation 2005 2013 SR Research Ltd System Update Update Rollback Update File Cancel Figure 8 4 Updating Host Software through Web UI 8 2 Troubleshooting Instructions If the Host Application fails to start please watch closely for the error message displayed on the host screen The complete error message is saved to the eye log file in the elcl data folder and is retrievable through the File Manager Try clicking on the tracker icon on the file manager to restart the Host Application If the problem persists please contact us support sr research com This section lists some of the error messages you may see when starting the host software 8 2 1 SCD file does not exist Each EyeLink 1000 Plus system requires a camera specific SCD file If you see the following error when starting the eye tracker please ensure the appropriate SCD file is located in the elcl scd folder of the Host PC Use the File Manager to upload the particular SCD file if it is not there ERROR Camera data file c ELCL EXE SCD does not exist You can find the camera specific SCD file in the Host Partition ELCL SCD directory of the EyeLink 1000 Plus Software USB drive tha
59. evert Figure 9 3 Configure IP address on Mac OS X If you plan to program your experiments in MatLab install the latest version of the PsychToolBox and reboot the computer Some demo examples can be found in the Psychtoolbox directory which is in the Applications folder at Applications Psychtoolbox PsychHardware EyelinkToolbox EyelinkDemos GazeContingentD emos Display PC Hardware and Software Installation 2005 2013 SR Research Ltd 10 Appendix A Optional Host PC Hardware Installation Your Host PC should be shipped to you preconfigured If you purchase additional components Analog card or PCI express Parallel Port card at a later time then you will need open the computer chassis to install those cards yourself Therefore put the computer case in a position where you can easily access the computer s PCI slots IMPORTANT Switch off the computers before installing any add on cards or connecting or disconnecting any cables Ensure that all cabling is properly connected and connectors are properly secured to the Host PC and the EyeLink1000 Plus camera before use WARNING Static Electricity Discharge may cause permanent damages to your system In order to avoid possible static electricity discharge during installation please discharge any static electricity accumulated in your body by touching a grounded metal surface or the computer case for a few seconds IMPORTANT Handle the cards only by their edges
60. f the table to which it is mounted to 23 cm above it This places the bottom of the monitor from 2 cm below the table surface to 32 cm above it Two LCD Arm extender units are shipped with the mount that can displace these measurements upwards by a further 6 15 or together 21 cm for a dynamic range of 11 to 44 cm or considering the bottom of the display 2 cm to 53 cm The LCD Arm can extend a distance of 75 cm from the base in any direction with a minimal extension of 48 cm The desired viewing level of the participant should be combined with the above values when considering the table on which to mount the Arm Base If the participant viewing level is greatly below the tabletop surface then a lower table to mount the Arm Base may be required LCD Arm Mount Installation 2005 2013 SR Research Ltd 5 2 Affixing the Arm Base to a Tabletop There are two different configurations of the Arm Base illustrated in Figure 5 3 On the left of Figure 5 3 is the configuration of the base for a table that can accept the shim at a deep position under its surface This may be required if there is a lip at the table s edge and is the default configuration that the system generally ships with The bolt is fully tightened when the unit is shipped and places pressure against a shiny steel shim that abuts against the underside of the table Be careful while handling the Arm Base s shim as it may have sharp edges around it centermost hole
61. for your display region that distributes calibration points throughout the space that can be seen For an example of how to configure such a custom calibration please see the discussion on the SR Research Support Forums https www sr support com forums showthread php t 68 Note that Experiment Builder s Camera Setup node has specialized support for customized calibration target positions and also has a facility for calibrating the eye tracker completely from within the scanner room if a fiber optic response device is available Please see the Experiment Builder online help for the Camera Setup action paying particular attention to Customized Calibration Positions and mention of External Control Long Range Mount Installation 2005 2013 SR Research Ltd 7 10 1 2 Simple Horizontal or Vertical Scaling of Target Positions A quick and easy to implement approach for simply scaling the horizontal or vertical extent of the calibration area is to use the calibration area proportion and validation area proportion commands to set the proportion of the X and Y display area to use during calibration and validation This can help when less than the entire display is viewable by subjects and is much quicker than redefining all of the calibration positions as it will scale the existing positions Hence this approach is particularly useful when first trying to calibrate the eye tracker in a non standard setting By changing these
62. g Camera to Screen Distance Testing the Host PC Installation 2005 2013 SR Research Ltd 9 Display PC Hardware and Software Installation The Display PC is used to run experiment application software for control of the EyeLink 1000 Plus tracker and stimulus presentation through the EyeLink Display Software This API is available on Windows Mac OS X and Linux platforms The latest version of the display software can be downloaded from SR Research support website http www sr support com The Display PC installation process should not take more than 15 minutes Installation instructions for the Windows platform are detailed below 9 1 Display PC Hardware Installation The requirements for the Display PC depend greatly on the type of experimental paradigms for which the EyeLink 1000 Plus will be used For example gaze contingent paradigms generally require more computing power than simple cognitive paradigms because the computer display needs to be updated as quickly as possible Similarly video and audio intensive experiments may need faster hard disks to support the transfer of large video file data to the computer in a timely manner The following requirements are suggestions for a Display PC configuration that should be able to handle most experimental requirements Please contact a SR Research Ltd representative if you have specific questions about your situation and would like our input e Recent Intel CPUs with duo core mul
63. ge from the side of the Camera Head providing the most protection from bumping or crimping as the Long Range Mount Installation 2005 2013 SR Research Ltd fiber optics are a delicate part of the apparatus There are two possible ways to attach the Camera Head given holes are present on the top or bottom so attach using the side that allows the cables to emerge with the lowest possibility of being damaged Next align the holes on the Camera Head Bracket with the pins on the Mounting Bar s Camera Clip in either the Level or Angled position Turn the knob on the back of the clip so that it threads into the Bracket As the knob is tightened the Camera Head will become immobile at the position and orientation at which it is being held Figure 7 4 Bracket in the Level Position left and Angled right without the Camera Head top and with the Camera Head bottom Figure 7 5 Illuminator attached using two brass thumbscrews left or single thumbscrew center rotates around the Mounting Bar when its knob is released to adjust tilt right Long Range Mount Installation 2005 2013 SR Research Ltd 7 4 Securing the Illuminator There are two different EyeLink 1000 Plus Long Range Mount Illuminators available identified by a sticker on the side of the illuminator The most common illuminator emits infrared light peaking at 890 nm At this wavelength the infrared LEDs may be visible as there is some overlap with the
64. gure 9 2 Configure IP address on Windows 7 72 Figure 9 3 Configure IP address on Mac OS XL 14 2013 SR Research Ltd LE Figure 10 1 PCL Analog Ce e 15 Figure 10 2 PCI Express Parallel Port Add on Card 76 3 2013 SR Research Ltd 1 Introduction The EyeLink 1000 Plus is the latest eye tracking system in the EyeLink line extending the strengths of its predecessor the EyeLink 1000 to set even more new performance standards The first few chapters of this Installation Guide provide hardware and software installation instructions for the EyeLink 1000 Plus system using the Desktop Tower Primate and LCD Arm Mounts Chapter 7 covers the optional Fiber Optic Camera Head addition to the 1000 Plus system which allows the system to track in sensitive environments such as MRI and MEG installations with various non ferromagnetic optimized Long Range Mounts The EyeLink 1000 Plus camera can be extended in several ways to further expand its capabilities 2000 Hz Upgrade allows the system to record eye movements at up to 2000 samples per second for monocular recordings or 1000 Hz each eye for binocular recordings A Remote Upgrade enables the system to be used in one of several Remote mode configurations each with useful properties tailored to the recording of eye movements from participants without requiring any form of head stabilization While the 2000 Hz Camera Upgrade is compatible with all mount options the Remote upgrade works wi
65. gured in an initialization file PHYSICAL INI Regardless of the mode of recording Screen Settings setup for the LCD Arm Mount is identical to the Desktop Mount and is covered in Section 8 4 Customizing Screen Settings Keep in mind when using the LCD Arm Mount however that for highest accuracy the viewing distance specified in Screen Settings configuration should be used with the LCD Arm Mount even though the LCD Arm may be dynamically adjusted on a per user basis LCD Arm Mount users should proceed to Chapter 8 Testing the Host PC Installation 5 8 Disassembling and Transporting the LCD Arm Mount The EyeLink 1000 Plus LCD Arm Mount ships with three 60 cm double sided Velcro straps to aid in securing the Arm for lifting and disassembly A recommended method of securing the LCD Arm using the Velcro straps is presented in Figure 5 6 It is recommended that two people participate in this task as the unit can be awkward to handle and does contain some delicate equipment Figure 5 6 Securing the LCD Arm for Disassembling and Transporting The weight of the LCD Arm with the Camera and LCD Assembly approximately 11 kg or 25 Ibs can cause shaft and cup holder points to become tight due to the pressures that the LCD Arm makes while moving the apparatus into various positions Such pressures make what on assembly amounts to merely lowering a shaft into a cup holder not as easily reversed On LCD Arm Mount Installation 2
66. he 32 channel Siemens head the eye tracker will need to be displaced to the side of the eye to be tracked Ideally the surface area of the projection screen should be much larger than is required so that even with the Screen Mount attached to the center of the screen the screen can be slid to the side moving the eye monitor off to the side with it while still allowing the entre display projection to land on the screen surface This makes for easy positioning of the eye tracker with the ability to switch between the eye to be tracked Long Range Mount Installation 2005 2013 SR Research Ltd monocularly such as with the Siemens 32 channel head coil by simply moving the screen The alternative is to loosen the mount holding the eye tracker to the screen and physically move its position beneath the screen 7 9 1 3 Desktop Base all scanner types The Desktop Base is simply a modified version of the Desktop Mount s ball joint base made without ferromagnetic materials It provides a quick and easy way to hold the Mounting Bar in position for fast setup of the eye tracker The drawback is that it may not be as easy to keep in position between subjects as the more specialized mounts that are also fixed in position Though other mounts may be preferable as they are customized to particular scanner environments the Desktop Base is often useful as it can be used in the MRI environment and is very amenable to testing different eye tracking configu
67. he LCD Arm while the other person grabs onto the monitor handles and lifts upwards Some rocking of the Monitor Assembly back and forth to dislodge it may be necessary Once free of the cup holder the Camera and LCD Assembly can be placed on a hard surface with the bracket making contact with the table At this point the LCD Arm can be removed from the Arm Base with one person applying downward pressure on the table while the other person lifts up on and wiggles the LCD Arm free of the Arm Base Continue to Chapter 8 Testing the Host PC Installation LCD Arm Mount Installation 2005 2013 SR Research Ltd 6 Primate Mount Installation The EyeLink 1000 Plus Primate Mount is a metal bracket that contains an illuminator for use with the EyeLink 1000 Plus camera The camera is affixed to the top of the mount pointing downwards and the researcher supplies an apparatus that will reflect a view of the eyes up into the camera barrel while reflecting the infrared illumination onto the face of the subject being tracked see Figure 6 1 Typically this would involve the researcher fixing a hot mirror a piece of glass that reflects infrared light while allowing other wavelengths to pass through it in front of the subject s eyes The subject can thereby see visual stimuli being shown by looking through the hot mirror while the camera has a good view of the eyes Typically the distance between the camera and where the eye would be for monocula
68. he entire Target Screen is intensely and uniformly illuminated 7 7 4 Put the Mount into Position and Find the Eye 8 Place the Mount at the intended distance and position For eye tracking purposes the mount should be within 25 degrees of visual angle from the top of the area to be Long Range Mount Installation 2005 2013 SR Research Ltd tracked without blocking the subject s view of the bottom part of the display An unoccluded line of sight for the subject from the eye to both illuminator and Camera Head is crucial for optimal eye tracking 9 Check the Orientation of the Camera Image If the camera image is vertically flipped this can be corrected by pressing the button to the right of the global camera view on the Host PC If the camera image is horizontally flipped this can be corrected by pressing the El button on the left to rotate the camera image 180 and then click on the vertical flip button Recommendation Turn USE SEARCH LIMITS off and ONLY have one eye in the camera s view The 1000 Plus has the ability to track the eye no matter where it falls in the camera s view This is highly desirable when the eye is difficult to locate i e at long distances and use of SEARCH LIMITS restricts the area that the eye will automatically be detected within 10 Select the Eye to Track and Adjust Thresholds Press the A Key for autothreshold or in the global camera view move the mouse cursor on top of th
69. hich may be affixed to the back left side of your Host PC using Velcro Typically the fiber optic cable will pass through a waveguide from the room with the eye tracker to a control room where the EyeLink Host PC is situated Ensure that the 12V EyeLink 1000 Plus power supply is connected to the power connector on the Eye EyeLink 1000 Plus Camera Long Range Mount Installation 2005 2013 SR Research Ltd Power Cabling There are several possible sources of DC power for the Long Range setup All sources of power plug into the Camera Head and Illuminator using pressure release LEMO connectors pictured in Figure 7 8 The connectors can be unfastened by squeezing the connectors tightly at the positions where raised arrows appear in the rubber covering on either side of the connector and firmly pulling the connectors apart 1 DB 9 Patch Panel Solution An AC power converter that connects via a 9 pin D shaped DB 9 D SUB connector to a separate cable with pressure release connectors 2 BNC Patch Panel Solution An AC power converter that connects using BNC connectors to a 9 pin D shaped DB 9 D SUB connector to a separate cable with pressure release connectors 3 Rechargeable Battery System A Battery Pack power system that is situated near the eye tracker and connects using a cable with pressure release connectors GTA TA mamun Turn off whon not In uso __ OUTPUT Co o ff F NS lt Remaining lHo approximate TE
70. human visible spectrum A 940 nm Illuminator is also available that is for most purposes invisible to the subject noticeable perhaps in only deeply dark adapted states even when in the darkened scanner environment The tradeoff between these two illuminators lies in the 890 nm version being more intense and therefore more strongly illuminating at greater distances Both illuminators however are sufficient for the 60 150 cm range of the Long Range 1000 Plus Affix the Illuminator to its Mounting Clip from underneath with its single black thumbscrew center of Figure 7 5 or with two smaller brass thumbscrews left image of Figure 7 5 Note two smaller black thumbscrews hold the illuminator cover on these are not involved in mounting the illuminator but will be used at a later step Figure 7 6 Tripod Adapter left Desktop Base middle and Mounting Bar attached to the Tripod Adapter using Two Brass Bolts right 7 5 Affixing the Mounting Bar The Mounting Bar attaches to a Mount Base e g Desktop Base Screen Mount specialized MRI Mount Tripod Adapter etc using two brass bolts Figure 7 6 right that are beneath small plastic covers Simply pry the plastic covers free with fingernails to avoid scratching them or the Mounting Bar and use a flathead slotted screwdriver to affix the Mounting Bar If you have plans to use the Tripod Adapter it has a inch 20 threads per inch hole in the bottom Figure 7 6 left for use with
71. itself is important as this will in turn reduce vibration of the mirror 7 9 4 Measuring and Using the Eye to Camera Distance Before putting the eye tracker in position measure the distance between the camera and the head coil mirror as well as the mirror to the eye The sum of these distances is the eye to camera distance ETCD and will be used as discussed in Section 7 7 to 1 Select the lens to use Long Range Mount Installation 2005 2013 SR Research Ltd The ETCD is used to select whether to use a 35 mm 50 mm or 75 mm lens These operate at viewing distances of 50 90 cm 90 120 cm and 100 150 cm respectively see Table 1 Affix the appropriate lens to the Camera Head by turning the threaded lens into the Camera Head 2 Set the lateral position of the Camera Head and Illuminator on the Mounting Bar Use the ETCD to set the separation between the Camera Head and Illuminator by aligning the edge of the Camera Head and Illuminator clips with the ETCD value marked on the Mounting Bar scales For more details see item number 1 in Section 7 7 2 3 Focus the Illuminator by setting the edge of the Illuminator cover to the ETCD as marked on the scale on the Illuminator s top For more details see item number 4 in section 7 7 2 4 Align the Iluminator to maximally light where the Camera Head is pointed as detailed in Section 7 7 3 While measuring distances also be sure to measure the eye to screen top and bottom
72. lay PC and all of the demo programs installed with the EyeLink Developer s Kit are capable of achieving this step e g TRACK EXE on Windows or GCWindow app on MacOS After running one of the SR Research demo programs transfer the global camera image For more details on this step novice users may wish to consult the tutorial of the 1000 Plus User Manual 6 Focus the Camera and Roughly Focus the Lens As humans do not see infrared monitoring the output of the infrared camera is necessary In this step we will shine the Illuminator at a Target Screen or even a wall at the distance where the participant s eye s will eventually be and ensure that the camera s view is centered within the bounds of the illuminated area The Target Screen appears at the end of this chapter Start by placing the mount at the eye to camera distance from the Target Screen or a wall With a good view of the camera s global image on the Host or Display PC Long Range Mount Installation 2005 2013 SR Research Ltd point the Camera Head at the Target Screen s center e g Figure 7 9 While watching the global image turn the lens so that the image becomes clearer it does not have to be perfectly focused at this stage and may look something like either image of Figure 7 9 Figure 7 10 Pointing the Camera a visible illumination boundary indicating poor lighting of the left portion of the camera s view left and a fully illuminated ta
73. mera Head if you purchased the Long range mount 5 Two black Cat6 network cables 6 and 157 6 Blue Ethernet cable to connect Host and Display PC together 7 EyeLink Host PC a Workstation PC or a Laptop PC Installation and System Cabling 2005 2013 SR Research Ltd 8 USB Ethernet converter if you are supplied with a laptop Host PC 9 EyeLink 1000 Plus Software USB drive You will also need the following components 1 A power strip with surge protection to ensure that your EyeLink receives consistent voltage and to make it easy to power the system on and off 2 A Display PC that ideally meets the required specifications listed in Section 9 1 2 3 Setting up the Host PC Your purchase of the EyeLink 1000 Plus system comes with a pre configured host computer a Laptop or a Workstation PC which require simple setup and the attaching of cables Set up the Host PC as you would any computer at the desired location see Section and Figure 1 1 for a suggested layout This includes connecting the keyboard and mouse to the computer as well as the power supply and monitor cables If you are supplied with a laptop host computer make sure you attach the USB Ethernet converter before powering up the computer 2 4 System Wiring Typical cabling steps for the Host PC are see Figure below top panel for a Workstation Host PC and bottom panel for a Laptop Host PC 1 If not already completed attach the keyboards mouse
74. ms are to be avoided Before setting Introduction 2005 2013 SR Research Ltd up the equipment check the arrangement of the room to be used against these suggestions These will aid in the ease of acquiring good experimental data e Ideally arrange the Host and Display PC monitors on tables in an T shape as in Figure 1 1 This configuration allows the experimenter to adjust the eye tracking device and set up the subject for the experiment while having access to both computer keyboards and monitors No Windows Display Computers No Windows Some Windows Host a OK HI Avoid Lights No Windows Figure 1 1 Suggested 1000 Plus System Layout e Ifyou are using the SR Research head support please make sure you have a sturdy table available to clamp the chinrest to This table must have a minimum thickness of 1 8 cm and a maximum thickness of 8 0 cm The bottom edge of the table should have a depth of at least 6 0 cm to mount the integrated table clamp e Ideally the table you select should be deep enough to accommodate both the monitor especially for a CRT monitor and eye tracker For a 21 CRT monitor with a 30 viewing angle the minimum table depth should be about 130 cm A high table will ensure that even the tallest participants do not need to hunch over in order for their view to be aligned with the top of the Display monitor e Avoid windows or other bright light sources that could cause
75. nd of the LCD Arm which runs diagonally throughout the photo the Arm Base two L shaped Imperial Allen wrenches 2 5 and 6 extender tubes the LCD Arm and two angled brackets Not shown in the photo are pieces of the monitor that allow it to be used with a traditional monitor mount should the user ever wish to remove it from the LCD Arm Mount for conventional use the monitor driver CD and instruction booklet and extension cables SVGA audio and power Figure 5 1 Typical EyeLink 1000 Plus LCD Arm Mount Installation 5 1 Choosing a Table Before mounting the LCD Arm and the Camera and LCD Assembly the Arm Base see Figure 5 2 and Figure 5 3 must be affixed to a sturdy table The Arm Base can accommodate tables LCD Arm Mount Installation 2005 2013 SR Research Ltd with a thickness of up to 75 mm 7 5 cm 2 95 at a depth of 18 mm to 65 mm 1 8 6 5 cm 0 7 2 6 The footprint of the Arm Base above the table is 160 mm wide x 140 mm deep 16 cm or 6 2 X 14 cm or 5 2 and requires further clearance for the LCD Arm to swing in any direction Figure 5 2 1000 Plus LCD Arm Mount Components LCD Arm Mount Base Arm Camera and LCD Assembly The minimum depth for mounting on the table underside with which the system can work is an 18 mm ledge in which case the maximum table thickness is 60 mm 6 cm or 2 3 8 The LCD Arm Mount can displace the Camera and Monitor Assembly from 11 cm below the surface level o
76. ned diagonally with the guide pins the camera will be oriented as required for binocular recording the Camera Angled position Camera Head Guide Holes Mounting Bracket Figure 7 3 Fiber Optic Camera Head with lens left attached to the Camera Head Bracket center Guide Holes in the Camera Head Bracket accept Guide Pins from Camera Head Clip right The top part of Figure 7 4 shows the Camera Head Bracket attached to the Mounting Bar without the Camera Head in the horizontal or Level position for monocular recording left and Angled for binocular recording right The bottom of Figure 7 4 shows the Camera Head attached to the bracket and the bracket attached to the Camera Head Clip on the Mounting Bar With the lens cap on to avoid dirtying the lens screw a 35 50 or 75 mm camera lens into the threads on the Camera Head See Table 1 of the current manual for recommendations on which lens to use for the eye to camera distance that you desire In general the larger the lens the greater the magnification and the longer the eye to camera distance that can be used Attach the Camera Head so the fiber optic cable is emerging toward the center of the Mounting Bar The Camera s image orientation can easily be changed in the Host PC application To mount the Camera Head first attach the Camera Head to the Camera Head Bracket as in Figure 7 3 right using supplied brass thumbscrews Ideally the cables should emer
77. network Enter the subnet mask of 255 255 255 0 Leave the default gateway and other settings blank see Figure 9 2 m Local Area Connection Properties Networking Sharing General Connect using You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator EW Atheros AR8131 PCI E Gigabit Ethemet Controller NDIS for the appropriate IP settings Configure 5 Obtain an IP address automatically Use the following IP address This connection uses the following items JM Client for Microsoft Networks ji QoS Packet S IP address 100 1 1 2 2 File and Printer Sharing for Microsoft Networks Subnet mask 255 255 255 0 Intemet Protocol Version 6 TCP IPv6 meme Protocol Version 4 TCP IPv4 pial cca Link Layer Topology Discovery Mapper 1 0 Driver Link Layer Topology Discovery Responder Obtain DNS server address automatically Use the following DNS server addresses at ue Prefered OS sever Description Alternate DNS server Transmission Control Protocol Intemet Protocol The default wide area network protocol that provides communication o across diverse interconnected networks Validate settings upon exit KR KI K K KI K K Figure 9 2 Configure IP address on Windows 7 8 Click on OK to return to the Properties dialog Click OK again to sav
78. ng the right eye ata particular distance requiring only minor focusing or positioning from subject to subject This section provides a general overview of the steps involved to configure all uses of the Long Range 1000 Plus including ANY mount for MEG or MRI Readers interested in a more specific solution for particular MEG or MRI hardware may wish to skip ahead to Section 7 8 for MEG or Section 7 9 for MRI The Long Range Camera Hardware needs to be configured once per setting After initial configuring multiple subjects can be run under identical conditions e g tracking the right eye with only minor focusing from subject to subject 7 7 1 Acquire Preliminary Measurements Upon first installing the Long Range 1000 Plus two important distances need to be known the eye to camera distance ETCD and the distance from the eye to the top and bottom of the visual display These lengths include the entire optical path that light will travel from to reach the observer so include any distances involving mirrors The ETCD eye to camera distance is measured from where the lens meets the Camera Head to the bridge of the participant s nose in centimeters For difficult environments consider measuring the length of a piece of string that has been held in the position of the optical path Measurements from the eye to the top and bottom of the visual display are used in computations expressed in terms of degrees of visual angle Be s
79. nt IR performance A similar 16 mm focal length lens is available which will allow the camera to function properly when closer to the eye As with other EyeLink 1000 Plus mounting options the camera requires 12V power anda supplied 60 mm 24 cable is connected from the camera to power the illuminator module A supplied ferrite choke on this cable must be on the end near the camera Finally a Cato Ethernet cable is connected from the side of the camera to the Ethernet port on the tracker Host PC To summarize the above points when installing the primate system please keep the following points in mind e The camera should not be too close to the eye as the pupil and corneal reflection must be contained within the tracking window e Bringing the illuminator closer to the eye will reduce noise but may cause discomfort and increase pupil erosion by the corneal reflection e Placing the illuminator too far from the eye will result in a dark image and noisy data e The line from the illuminator to the eye should be at least 10 off axis from the camera lens for proper imaging e The illuminator should be attached to a robust metal support as should the camera Preventing separate motion of the camera and illuminator due to vibration is critical to prevent extraneous noise in the data The metal will also help to keep the illuminator cool increasing its light output Primate Mount Installation 2005 2013 SR Research Ltd e
80. nt Installation 10 3 1 MOULE the Tower toa Table oo 10 3 2 Mounting the High speed Camera and Cabling 12 33 Adjusting Head Support Components 13 4 Desktop Mount EyeLink Remote Installation 14 4 1 Mounting the EyeLink 1000 Plus High Speed Camera and Cabling 14 4 2 Adjusting the Desktop MORE Sd 22 15 4 3 EyeLink Remote Hardware Adjustment for the Desktop Mount 16 5 LCD Arm Mount Installation 18 5 1 CHOOSE Aa LA de EE E A E E N 18 9 2 Affixing the Arm Base to a Tabletop 20 20 5 3 Assembling the LCD Arm Components ssssssessecereessssssssssssseesee 21 5 4 Mounting the EyeLink 1000 Plus High Speed Camera 22 9 9 PRC OG LHC CAPI ea ee a a po 23 5 6 Adjusting the Tension Points on the LCD Arm 0 24 9 7 LCD Arm Mount Adjustments for Monocular and Remote Recording 25 9 8 Disassembling and Transporting the LCD Arm Mount 25 5 8 1 Option 1 Remove LCD Arm and Camera Assembly as a Unit 26 5 8 2 Option 2 Remove Camera Assembly then Remove the LCD Arm 26 6 Primate Mount Installation 28 6 1 Primate Mount Hardware Considerations ssssssseesreseeeerereereseeeees 29 T Long Range Mount Installation ss 32 Le
81. nt Installation Please follow the steps below to mount the EyeLink 1000 Plus Tower Mount onto the table and to install the camera Figure 3 1 illustrates adjustable parts on the Tower Mount 1000Hz Eye Selection Infrared Camera Knob IR Illuminator vA Housing External 7 Light Baffling Padded Forehead Rest Mirror Angle Adjustment _ IR Reflective Mirror Tower Height Adjustment Knok ___ Padded Chin Rest Chin Rest Height Adjustment Knob Figure 3 1 Components of the Tower Mount 3 1 Mounting the Tower to a Table Important The head support Tower should only be held by the vertical posts and should NEVER be held by the mirror or the components attached to the mirror We recommend you have somebody available to assist with mounting the head support Tower onto the table to prevent damages to the IR mirror or other parts of the Tower Check whether the table is suitable for mounting the EyeLink 1000 Plus Tower the table used should have a minimum thickness of 1 8 cm and a maximum thickness of 8 0 cm Loosen the table clamp by turning the knob counterclockwise then place the table clamp fully onto the table and then tighten it clockwise see left panel of Figure 3 2 Check that it is firmly secured by gently attempting to rock the table clamp base free If the table clamp base wobbles you will have to tighten it further Tower Mount Installation 2005 2013 SR Research Ltd
82. o camera distance to 150 cm at the furthest see sticker in Figure 7 9 right Adjust the cover so that its edge aligns with the marking that approximates your eye to camera distance and then tighten the black thumbscrews Long Range Mount Installation 2005 2013 SR Research Ltd Figure 7 9 Focusing the Illuminator The following steps ensure proper illumination of whatever the camera points at This is done by aiming and securing the Illuminator so that the halo it produces is in the center of the camera s view Because the Camera Head and Illuminator will move together whatever is viewed will be well lit A Target Screen appears at the end of this chapter Place the Target Screen at the distance of the eye to camera distance and once alignment is complete move the mount into its final location 7 7 3 Align the Camera Head and Illuminator 5 Check Host Software Configuration Start the EyeLink Host PC application and click Set Options button Check that the Configuration is set to Long Range Mount Monocular or Long Range Mount Monoc Binoc corresponding to how you oriented the Camera Head Level or Angled respectively for monocular and binocular recording Then navigate to the Camera Setup screen The next steps are often more easily accomplished if you have a large view of what the camera is registering The 1000 Plus API has the ability to transfer the global view of the camera to the Disp
83. o the Camera Head clip at a 45 degree angle To angle the Camera Head undo the thumbscrew of the Camera Head Clip and align the holes on the Camera Head Bracket with the guide pins on the bracket see Section 7 3 for detailed steps 2 Determine which lens is most appropriate Based on the eye to camera distance use the Lens Guide Table 1 to determine the most appropriate lens Screw the small end of the lens into the threaded Camera Head 3 Check the Camera Head and Illuminator Separation The further away the mount is from the eye the greater the ideal separation of the Camera Head and Illuminator On the top of the mount are numerically marked distance scales that indicate the appropriate locations on the Mounting Bar for the inner edges of the Camera Head and Illuminator based on different eye to camera distances measured in cm Loosen the knobs holding the Camera Head and Illuminator Clips to the Mounting Bar adjust the clip positions so the inner edges align with the appropriate distance and then tighten the knobs 4 Focus the Illuminator The illuminator has a lens on it that will focus the infrared light at different distances Without removing the black thumbscrews circled in Figure 7 9 left on the underside of the illuminator loosen them so that the illuminator cover will slide back and forth to reveal an illuminator distance scale Sliding the cover forward will reveal markings on the scale from 60 cm at the closest eye t
84. o which the cable will eventually be attached this will prevent the cable from binding against the bracket when the LCD Arm is twisted in various directions Follow these steps 1 First let s deal with cables attached to the high speed camera Figure 5 4 top e Plugin the Camera Ethernet cable e Insert the round EyeLink 1000 Plus power supply cable to the power connector on the right side of the camera e Ensure that the two illuminator cables are plugged into the side of the high speed camera placement is not important These cables are present on the Camera and LCD Assembly and do not emerge from the LCD Arm 2 The remaining cables emerging from the LCD Arm connect to the LCD monitor as follows Figure 5 4 bottom e Insert the phono plug connector into the audio input jack on the bottom centre of the LCD monitor of the Camera and LCD Assembly e Connect the SVGA cable to the SVGA input on the right of the LCD monitor Tighten the screws by thumb or use a slotted screwdriver e Connect the three prong power cable into the LCD monitor power input on the left side of the monitor E Figure 5 5 Cables Emerging from the Bottom of the LCD Arm LCD Arm Mount Installation 2005 2013 SR Research Ltd 3 The following cables coming out of the bottom of the LCD Arm shown left to right in Figure 5 5 are to be connected as described below Extension cables are supplied as indicated in the text above The fir
85. og card already seated in the Host PC if your system comes preconfigured e Analog breakout board with BNC connectors e Cable to connect the analog PCI card to the breakout board The analog card allows position information and pupil size to be output as analog voltages The card connects to a breakout board using a thick cable and the breakout board in turn has a number of BNC connectors attached to it Each BNC connector has a label See Table 2 for details of the information carried on each line assuming that the default analog force_4channel NO setting is used To reduce noise it is recommended that the breakout board be encased in an RF shielded and insulated box Line DACO 1 2 3 4 5 66 65 Binocular Right Pupil Size STST STST Strobe Line Table 2 Analog Card BNC Connector Information For detailed information regarding configuration and use of the analog card please see Appendix A of the EyeLink 1000 Plus User Manual Installation and System Cabling 2005 2013 SR Research Ltd Continue on to the section pertaining to the mounting option that you are installing Tower Mount 3 Tower Mount Installation Desktop Mount 4 Desktop Mount Installation LCD Arm Mount 5 LCD Arm Mount Installation Primate Mount 6 Primate Mount Installation Long Range Mount 7 Long Range Mount Installation Installation and System Cabling 2005 2013 SR Research Ltd 3 Tower Mou
86. olors of the BNC connectors match on either side of the patch panel filter plate That is if the red color coded connector plugs to a BNC terminal on one side of the plate it MUST connect to the red coded connector of the cable on the other side of the plate Failing to match these color codes will reverse positive and negative charges and will harm the eye tracker A pair of RF line filters not supplied by SR Research should be used on the control utility room side of the patch panel between the BNC connectors supplying power and the BNC terminals on the patch panel Excluding such line filters risks increasing RF noise transported into the scanner room via this cable connection Rechargeable Battery System The third power solution listed above is the simplest and provides the lowest potential for RF noise while allowing for fewer cables in the room It involves using power provided by two 6V 13 Ah lead acid rechargeable battery units see rightmost image of Figure 7 8 located near the Camera Head and Illuminator A simple cable with LEMO pressure release connectors on either end connects the battery output to the Camera Head and Illuminator Some notes on using the Rechargeable Battery System e Pressing a TEST button on the front of the battery s faceplate will light up an indicator on the top of the battery showing a conservative estimate of how many hours of eye tracker usage remain given the battery s charge If more
87. onnectors are properly secured to the Host PC and the EyeLink 1000 Plus camera before use Warning Static Electricity Discharge may cause permanent damage to your system In order to avoid possible static electricity discharge during installation please discharge any static electricity accumulated in your body by touching a grounded metal surface or the computer case for a few seconds 2 1 Unpacking Unpack all of the items you have received from SR Research Ltd If the system has been stored or transported at a temperature below 10 C allow all parts to warm to room temperature before proceeding If you are unpacking the Tower Mount please be careful as it contains glass that may have been broken during shipping IMPORTANT The Tower assembly should be held by the vertical posts and should NEVER be held by the mirror or the components attached to the mirror 2 2 Pre installation Checklist Ensure that you have the listed components available before you start installation 1 EyeLink 1000 Plus High speed Camera 2 12V Power supply for the EyeLink 1000 Plus Camera 3 EyeLink 1000 Plus Mount which can be Desktop Tower LCD Arm Primate Mounts and Long range mount Each type of Mount consists of an infrared illumination source an apparatus for holding the EyeLink 1000 Plus camera and lens specific to the Mount Each Mount option has a separate chapter to be consulted regarding its installation 4 Fiber Optic Ca
88. or difficult tracking environments Similarly the height at which the Mounting Bar is positioned can be adjusted and two different length posts are included for added flexibility in the range of heights at which the Mounting Bar can be positioned The Tray Mount has an optional high quality projection screen that is attached at the end of the tray using nylon or brass bolts It also comes in a configuration to hold a screen supplied by the user bottom images of Figure 7 13 For larger bore openings there is a rectangular riser block that raises the screen higher by a couple of centimeters If this is too high for your bore then remove this riser block see top right image of Figure 7 13 There are two different lengths of bolts for use with or without the riser block The Tray Mount slides into the end of the bore where its feet rest on the bedrails Four nylon bolts attached to the feet should be turned to put pressure on the bedrails and wedge the mount securely into place Although the Tray Mount was designed to be operated from the end of the bore it is possible to slide it deeper into the bore in the direction of the head coil Deeper positioning may work without introducing problems for MRI imaging however eddy currents from the magnetic field will introduce greater vibrations in the eye movement recordings For this reason it is recommended to position the Tray Mount at the end of the bore The Tray Mount has a hole cut out beneath the s
89. pupil itself The camera attaches to the bracket with a clamp knob and 3 indexing bumps for positive alignment The camera may also be attached to the bracket so that it is rotated by 180 to change the side of the bracket the lens is on The illuminator block attaches to the bracket with a single clamp knob in a slot allowing the distance from the illuminator to the eye to be changed to control brightness and CR reflection size and allowing the illuminator to be rotated to maximize illumination The LEDs used in the illuminator were selected for even illumination so angling the illuminator is not critical The illuminator consists of an array of 24 infrared LEDs mounted in a heatsink block The block also allows for a mounting of the assembly via an M8 thread in each side It is important that the illuminator be mounted to a substantial piece of metal to help cool the illuminator as this will enhance light output The IR LEDs emit at 910 nm which was selected for reduced visibility in dark adapted conditions compared to typical 890 nm LEDs The LED array is safe for viewing by humans at any distance it passes the IEC 60825 1 standards by a factor of 3 at any distance However distances of gt 160mm from the eye resulting in irradiance of lt 1 2mW cm are recommended for long term viewing comfort Primate Mount Installation 2005 2013 SR Research Ltd The EyeLink 1000 Plus Camera mounts to the top of the bracket using a clamp knob M8
90. r and or Experiment Builder software if purchased e Configure the network connection to the EyeLink 1000 Plus Host PC 9 2 1 Installing the EyeLink 1000 Plus Experiment Programming Kit The Windows Display Software API and example files is available in the Display PC Installation directory of the EyeLink 1000 Plus Software USB drive To install the toolkit 1 Insert the EyeLink1000 Plus Software USB drive to the Display PC 2 Open the Display PC Installation gt Windows folder 3 Copy the EyeLinkDevkKit_ exe to the computer desktop Run the installer by double clicking the icon 4 Follow the instructions from the InstallShield Wizard to install the display software 5 Wait for the InstallShield Wizard to finish and click FINISH to complete installation 9 2 2 Installing the EyeLink Data Viewer and Experiment Builder Software The EyeLink Data Viewer and Experiment Builder software are optional Windows applications for the EyeLink eye tracker If you did not purchase these options this section may be skipped or you may install the software for evaluation in demo mode 1 Insert the EyeLink1000 Plus Software USB drive to the Display PC 2 Open the Display PC Installation gt Windows gt EyeLink Data Viewer folder 3 Copy the EyeLinkDV_ exe to the computer desktop Run the program by double clicking on the icon 4 Follow the instructions from the InstallShield Wizard to install
91. r recording would be identical to the Tower mount 380 mm While the Primate Mount uses a similar set of metrics to the Tower Mount it is intended to be flexible and ready to install in a wide range of situations where a means of head stabilization exists but the Tower or Desktop mounts are inappropriate This frequently occurs when research on eye movements is being performed on primates with their head fixed for instance by means of a Primate Chair If the head is fixed extremely solidly pupil only tracking may be possible Otherwise as with the other EyeLink 1000 Plus mounting options Pupil CR mode is recommended EyeLink 1000 Plus Camera Infrared Illuminator Module yp 45 Hot Mirror x E e On virtual Eye Figure 6 1 Typical Primate Mount Installation Primate Mount Installation 2005 2013 SR Research Ltd 6 1 Primate Mount Hardware Considerations As experimental setups using this mount vary widely following something akin to Figure 6 1 is recommended but other configurations are possible The configuration depicted assumes use of the 25 mm lens but other lenses can be used for different viewing distances As with the Tower mount but not with the other systems there is lots of room for movements of the hand in front of the body using the Primate Mount All system and optical components can be seen in the overall rear and side view drawings The optical axis is represented in Figure 6 1 by the
92. rations Simply position the Desktop Base with the Mounting Bar attached outside the bore on top of something sturdy with no ferromagnetic content such as a stool or table from within the MRI room For binocular recording the Desktop Base and Mounting Bar should be centered at the end of the bore For use with head coils that provide visual obstacles when viewed directly from behind e g the 32 channel Siemens head the Desktop Base needs to be as far over to the side as possible with the Mounting Bar tilted on an angle so that neither the Camera Head nor Illuminator are blocked by the bore The same principles apply as with the regular mounts if the subject has a clear line of sight to the Illuminator and the Camera Head then tracking is possible 7 9 1 4 Short Bore Mount Siemen s Allegra A special mount has been created for short bore scanners such as the Siemen s Allegra that goes into the bore The Camera Head and Illuminator are seated on the bottom of the bore pointed straight up at a hot mirror The hot mirror reflects infrared light while passing light in the visible spectrum thereby allowing the subject a clear view out the back of the bore The hot mirror reflects the image of the eye from the head coil mirror to the Camera Head while also reflecting the infrared from the Illuminator to light up the eye Given the limited space in the bore there is really only one place for the mount though the Camera Head and
93. reen physical coordinate measurements are in Testing the Host PC Installation 2005 2013 SR Research Ltd millimeters Turn on both the EyeLink 1000 Host PC and Display PC Run your intended experiment if you don t have one use the Track example supplied When the experiment starts up measure the currently lit up viewable portion of the monitor Please note that the monitor may adjust the lit up portion depending on the refresh rate and screen resolution used For example some wide screen monitors may have black edges when running experiments at non native resolutions the screen width and height should be measured as the lit up portion of the display excluding the black edges Take down the measurements you have in millimeters and enter them in the following dialog box Click Save and then press the Next button Screen Dimensions width 376 mm Display Resolution Eye to Screen Distance Camera to Screen Distance height 292 mm Width of the viewable portion of the Display PC monitor in millimeters 376 Height of the viewable portion of the Display PC monitor in millimeters 292 Next Figure 8 5 Updating Screen Dimensions 8 4 2 Display Resolution Now you will see a screen that lets you specify the resolution of the Display PC monitor when you run your experiments If you are using SR Research Experiment Builder then it will adjust this automatically at the start of an experiment so you do not need to manuall
94. rget indicating intense and uniform illumination right 7 Align the Illuminator and Camera The boundaries of the illumination will show with distinctly different threshold coloring in the illuminated versus non illuminated locations The amount of threshold coloring displayed on the global view can be adjusted up or down by pressing the UP and DOWN arrow keys on either the Host or Display PC keyboards You can also toggle the threshold coloring on and off using the Threshold Coloring button on the Host PC s Camera Setup screen The left side of Figure 7 10 illustrates the boundary of illumination in the global camera view the illuminator would need to be shifted in this case leftwards so that the entire target is illuminated as in the right side of Figure 7 10 Adjust the horizontal and vertical placement of the Illumninator as follows e While monitoring the global camera view adjust the illuminator s tilt up and down by rotating the clip around the Mounting Bar so that the Target Screen is brightly illuminated and the bulk of the illumination appears in the center of the Target Screen on the vertical tighten the knob holding the illuminator to the Mounting Bar to secure the position The brightly illuminated region will be grayscale while the region in the infrared dark will be threshold colored e By swiveling the illuminator around the thumbscrew adjust the angle of the illuminator on the horizontal plane so that t
95. rnative method to aligning the Camera Head and Illuminator after finding the eye in the center of the global camera image adjust the illuminator angle so that the eye s and its their surround are well lit 7 9 7 Adjust Image Thresholds and Focus the Lens This section assumes some familiarity with the basics of using the 1000 Plus For a thorough introduction to a tracking session please consult the tutorial in Section 3 of the 1000 Plus User Manual Some of the essential steps are recapped here but for an overview of the procedure and the reasoning behind the different steps please consult the tutorial Once the eye is in view of the camera and the crosshairs are present with threshold coloring turned on switch to the zoomed in thumbnail view of the eye The thumbnail that is selected and transferred to the Display PC can be toggled by pressing the left or right arrow cursor keys on either keyboard Focus the lens The goal is to minimize the size of the corneal reflection resulting a good focus overall Simply turn the barrel of the lens while monitoring the size of the corneal reflection to minimize it If threshold coloring is preventing a clear view of the eye try A for autothreshold to set the thresholds in reasonable range Once the image is in focus press A on the Host or Display PC keyboard to perform an autothreshold or use the mouse to click on the pupil of the eye which will typically perform an a
96. s of the Remote Modes using a target sticker it is recommended to place the Desktop Mount directly in front of the Display computer monitor with no extra space between Desktop Mount and the monitor By default the eye tracker software was designed to perform based on this recommended setup However in some setups especially when a large display monitor is used it is often necessary to move the monitor back while keeping the Desktop Mount at its optimal distance from the subject so as to increase the distance between the subject and the screen while still ensuring that the eye tracker can track the subjects properly In such cases measure the distance in millimeters between the lens at the point where the lens connects to the camera to the display monitor Enter the measured value in the following screen and click on the Save button Testing the Host PC Installation 2005 2013 SR Research Ltd Screen Dimensions Display Resolution Eye to Screen Distance Camera to Screen Distance Camera to Screen distance 190 mm Measure the distance between the lens at the point where the lens connects to the camera and display monitor in millimeters Lin Note This setting is only applicable to Remote mode using a target sticker If you are using other mounts such as Desktop Tower Long Range Arm or Primate Mount please ignore this field and use the default setting Back Figure 8 8 Updatin
97. s required 7 9 3 1 Replacement First Surface Head Coil Mirrors SR Research is currently working to replace the standard mirrors on popular systems Due to time consuming and labor intensive manufacture of these mirrors we cannot easily custom make mirrors If your site uses a custom mirror that has a wider range of tilt and a larger field of view than manufacturer supplied head coil mirrors you may wish to look into obtaining a front surface mirror with good infrared reflecting properties The only head coil pictured in Table 4 for which SR Research cannot currently supply a front surface replacement mirror is the 8 channel head coil sometimes used with Siemens scanners and frequently used with the Philips Achieva 7 9 3 2 Minimizing Head Coil Mirror Vibration First surface replacement mirrors typically affix to the head coil in an identical way to the manufacturer supplied mirrors It is important that the mirror vibrate as little as possible in order to minimize the vibration of the stimulus display experienced by the subject and to minimize movement of the eye image in the mirror from sources other than the eye itself Sometimes using thick tape where the mirror assembly contacts the head coil can result ina tighter connection between the mirror assembly and the head coil as well as dampening the vibration Alternatively Velcro may help to secure the mirror in position and assist in damping vibration Minimizing vibration of the head coil
98. s the eye tracker to be at about 60 cm from the observer with CTF and Elekta Neuromag MEG systems making for an excellent eye tracking signal Once the mounting position has been determined users may wish to create a wooden pedestal to rest the mount on It is important that the mount be solid as any vibration will degrade eye movement recording and act as a potential noise source For this reason the Desktop Base should never be placed on any construction making contact with the participant or their chair in order to prevent the subject from introducing any form of vibration to the apparatus 2 Screen Mount A Screen Mount is designed to clamp to the bottom of a screen frame such as that supplied with Elekta Neuromag systems see left side of Figure 7 11 or often used with 4D systems see right side of Figure 7 11 for an example of sucha custom built screen The top of the mount has the universal ball joint found on the 1000 Plus Desktop Base of Figure 7 1 3 The Screen Mount typically clamps onto the bottom of a screen frame Mounts are available for narrow 37 mm width or wide 75 mm screen frames An optional rubber bumper takes up a further 9 mm of this gap The bottom of the Camera Head and Illuminator are a minimum of 150 mm above where the clamp mounts onto the screen with a maximum height of 395 mm When using the Screen Mount with MEG ensure that the eye tracker remains centrally positioned in front of the subject otherwise
99. sing the target sticker please keep the default screen_distance value 1 For user of the Stabilized Head Mode of the eye tracker Desktop Arm Tower Primate and Long range mounts set up the monitor and chinrest so that the chinrest is horizontally aligned with the monitor HINT measure from the left and right knobs on the chinrest to the left and right sides of the top of the display area of the monitor these should be equal 2 Adjust the height and tilt of the monitor such that when the participants are seated and looking straight ahead their eyes are level with 75 of the monitor height Monitor can be tilted up slightly Now measure from the subject s eye to the top of the visible part of the display area then from the eye to the bottom of the display area Enter these two values in millimeters in the Eye to Screen Distance screen see the figure below and click the Save button Testing the Host PC Installation 2005 2013 SR Research Ltd Screen Dimensions distance to top 600 mm Display Resolution Eye to Screen Distance F E e Camera to Screen Distance E Ja distance to bottom 660 mm Distance from eye to the top of the viewable portion of the Display PC monitor in 600 millimeters Distance from eye to the bottom of the viewable portion of the Display PC monitor in millimeters si Back Next Figure 8 7 Updating Eye to Screen Distance 8 4 4 Camera to Screen Distance For user
100. st cable is the camera high speed data cable and goes to the Host PC the next two cables go to outputs on the Display PC and the final two go to a power source If you are using a Workstation Host PC connect the Ethernet cable to the network card on the computer labeled Camera Ethernet If you are using a Laptop Host PC use the Ethernet port on the motherboard Connect the supplied SVGA extension cable to the SVGA cable coming out of the bottom of the LCD Arm Mount The female end of the cable coming from the LCD Arm attaches to a male connector on the extension The extension s female end attaches to the Display PC video card output port Connect the supplied audio cable extension female end to the 3 5 mm 1 8 mini plug on the audio cable emerging from the bottom of the LCD Arm Insert the male end into the audio output jack on the Display PC Connect the supplied three prong power cable female end to the camera power supply male end that is attached to a cable coming from the bottom of the LCD Arm The male end plugs into a power source Connect the supplied three prong power extension cable to the LCD monitor s power input and plug the male end into a power source The power supply in the monitor is 110 220 Hz so an adapter may be used supplied for countries outside of North America and Japan if the appropriate extension is not included 4 One final cable needs to be attached Connect the blue network c
101. subject s head should be elevated as high as possible without touching the mask of the head coil For optimal brain imaging ensure that the head remains centered in the head coil padding one side of the head so it is held more laterally will result in better eye tracking but may produce inferior brain images 7 9 1 2 Screen Mount all scanner types The Screen Mount is designed to clamp to the bottom of a user supplied screen that is situated outside and at the end of the bore Once clamped onto the bottom of the screen frame the height of a ball head holding the Mounting Bar can be adjusted to provide the optimal view of the eye in the head coil mirror Loosening the knob of the Screen Mount allows the component holding the Mounting bar to slide up and down The optimal Mounting Bar position from an eye tracking stance is as high in the field of view as possible without blocking the bottom of the display There are two Screen Mount configurations The mounts are available for narrow 37 mm width or wide 75 mm screen frames An optional rubber bumper takes up a further 9 mm of this gap The bottom of the Camera Head and Illuminator are a minimum of 150 mm above where the clamp mounts onto the screen with a maximum height of 395 mm For binocular recording the Screen Mount and hence the Mounting Bar should be centered at the end of the bore For use with head coils that provide visual obstacles when viewed directly from behind e g t
102. t Camera Head Clip vat Guide Pins ES Illuminator Mounting Clip Figure 7 2 Mounting Bar and Clips note Guide Pins on the Camera Head clip left The Mounting Bar can be fixed one of several specially designed mounts e g a Screen Mount for MEG or MRI a customized MRI mount the Desktop Base or to a tripod via a Tripod Adapter The camera can be oriented parallel with the top of the Mounting Bar the Level position for monocular recording or it can be rotated 45 degrees the Angled position for Long Range Mount Installation 2005 2013 SR Research Ltd binocular or monocular recording In addition to being tilted up or down the Illuminator can be swiveled around its vertical axis to assist with positioning Several lenses are available for optimal tracking at different eye to camera distances Three lenses 75 50 and 35 mm anda tripod adapter are pictured see Figure 7 1 right The most important step in setting up the Long Range 1000 Plus is to align the illuminator so that it is maximally illuminating the camera s view Doing this alignment ensures that no matter where the camera is pointed it s target will be lit with infrared light provided there are no obstacles in the way 7 2 Overview of Setting the Mount The most important step in setting up the Long Range Mount is to align the illuminator so that it maximally illuminates the location that the camera is pointing Once this is done
103. t came with your system If you cannot locate this file please contact us 8 2 2 ERROR Can t find Gige Camera Sometimes the Host Application will not start with the following error displayed in the Web UI interface ERROR Can t find Gige Camera Try first clicking on the tracker icon on the file manager to restart the host application If the problem persists try the following trouble shooting tips Testing the Host PC Installation 2005 2013 SR Research Ltd 1 Is the EyeLink 1000 Plus camera properly powered up Check whether the indicator light on the camera Ethernet port is on Try unplugging the camera power supply and then plug it back 2 Are you using the black Ethernet cable supplied by us The Ethernet cable should be a Cat6 network cable that supports gigabit connection 3 Is the network cable for the camera plugged into the right port on the Host PC If you are using a Workstation Host PC the network cable for the camera should be plugged to the add on network card there should be an EyeLink Camera label on the card If you are using a laptop Host PC the cable for the camera should be plugged to the network port on the motherboard 4 Is the network connection loose You may try unplugging the cable and then firmly plugging it back in 5 Ifthe problem persists please check out the information displayed on the Configuration gt Network Settings screen from the Web UI interface Make
104. th only the Desktop and LCD Arm Mounts The basic steps in installing the EyeLink 1000 Plus system are 1 Unpacking and setting up the eye tracking hardware for your particular mount and stimulus presentation method 2 Testing the installation and configuring the 1000 Plus software 3 Installing and configuring the EyeLink Windows Mac OS X or Linux Display Software API and example experiments on your Display PC A complete installation in a behavioral laboratory setting should take under and hour while initial installation in an MRI or MEG environment could take two hours or more depending on the amount of testing one wishes to perform If you have questions or encounter a problem during the installation process please contact SR Research sending an e mail to support sr research is likely to get the fastest response though feel free to call our support phone line at the numbers listed on the front page of the manual If you would like to ensure that a technical representative is available for direct phone support during your installation please contact your SR Research representative to book a time for installation phone support Please try to arrange an installation time with at least one week s notice 1 1 Behavioral Laboratory Installation Suggested Equipment Layout The layout of the EyeLink 1000 Plus equipment in the Behavioral Laboratory is important if participant setup is to be convenient and lighting proble
105. than two hours charge remains the indicator light is green while it is red once the charge gets down to this critical level Long Range Mount Installation 2005 2013 SR Research Ltd e Each battery should last 6 8 hours after a full charge depending on battery age and how the battery was cycled during its life Charging takes about 9 12 hours from dead with the supplied 2A charger which simply plugs into the front of the battery and considerably less time if the battery is only partially discharged e It does not harm the battery to leave it plugged into a power source for long periods of time and for longest battery life o batteries should remain fully charged if possible o the power switch on the battery pack should always be turned OFF when not in use otherwise the battery pack will self discharge o batteries should be charged and stored above the 3 hour charge level e The battery is a BB Battery 6V 13 Ah lead acid battery but the connector on it is proprietary so please contact SR Research for replacements as not all after market batteries will have the appropriate connector or dimensions to fit in the battery case 7 7 Configuring the Long Range Camera Hardware Follow these steps to configure the system for Long Range tracking The intent is that these steps need only be completed once to use the Camera and Illuminator in a given configuration Multiple subjects can be run under identical conditions e g tracki
106. the Camera Head and Illuminator are tightened in place and the entire Mounting Bar can be easily positioned using the ball joint on the Mount to which it is affixed Aligning the Camera Head and Illuminator ensures that no matter where the camera is pointed its target will be lit with infrared light without requiring time consuming adjustment of the components Loosening the knob on the back of the Illuminator clip allows lateral position on the Mounting Bar and tilt of the Illuminator to be adjusted Loosening the knob holding the Illuminator to its clip allows the direction that the Illuminator is pointing to be changed Loosening the knob on the Camera Head clip allows lateral positioning of the Camera Head by sliding it along the Mounting Bar and allows the angle of the Camera Head to be rotated 45 degrees for binocular recording when an illuminated view of both eyes can be acquired The Long Range Mount is designed so that the side of the Illuminator and Camera Head are interchangeable Cables coming from the Camera Head should be directed so they can exit and be securely fastened to avoid being crimped Typically the Camera Head and Illuminator are located at opposite ends of the Mounting Bar and the cables will emerge from the center However some configuration require this heuristic to be violated e g with the Siemen s 32 channel head coil see below For monocular recording the typical lateral position for the Illuminator
107. thread and a set of dimples on its front This ensures that the camera cannot vibrate independently of the illuminator The camera also has 5 mounting holes on its sides 2 near the center of the camera s sides and 3 aligned with the optical center of the lens and sensor These holes take a standard 1 4 20 screw used on tripod and camera mounts However the hole at the lens end of the camera may not be robust enough to mount the camera with the illuminator bracket attached especially if vibration is present It is recommended that the illuminator bracket be mounted to the head restraint assembly using the 3 holes supplied near the camera mount The long side of the bracket should be oriented away from the subject to maximize head clearance Once the bracket is mounted the illuminator and camera may be attached and re oriented as required The camera may be installed with the lens on the left or right side of the bracket and the illuminator fitted as required to place the connector on the side opposite the camera lens The EyeLink configuration files may be modified to flip the camera image as required to match any mirrors or orientation of the camera While the camera will accept most C mount lenses the performance of most lenses is rather poor in infrared with blurry or dark images resulting from lens coatings or non optimal design The standard camera configuration uses a 25 mm focal length lens selected for high resolution and excelle
108. ti core processor e 250 GB or larger hard disk with 7 200 or higher rpm or solid state hard drive e 1 0 GB or more PCIx video card supporting vertical refresh rates of at least100 Hz e At least 4 GB RAM e A DVD ROM writer for software installation and data backup e 32 bit or 64 bit Windows 7 or Mac OS X 10 6 8 or higher e 17 or larger CRT monitor for valid timing synchronization that supports vertical refresh rates of gt 100Hz 10 ms frames and horizontal refresh rates of at least100 kHz e A dedicated Ethernet port to connect Display PC to the EyeLink 1000 Plus Host PC e Optional Ethernet card for use on local network or internet access e A keyboard and mouse e Free USB ports if EyeLink Data Viewer SR Research Experiment Builder is purchased Set up the Display PC at the desired location see Section and Figure 1 1 for a suggested layout This includes connecting the keyboard and mouse to the computer as well as the power supply and monitor cables Display PC Hardware and Software Installation 2005 2013 SR Research Ltd 9 2 Windows Installation To use a Windows Display PC with the EyeLink 1000 Plus eye tracker various EyeLink software components should be installed The installation process consists of the following basic steps e Install the EyeLink Experiment Programming Kit e Install the EyeLink Data Viewer and or Experiment Builder software if purchased e Install the USB Key drivers for EyeLink Data Viewe
109. tions are based on Windows 7 other Windows operating systems may vary slightly 1 From the Start menu select Control Panel 2 Click on the Network and Internet Connections icon and then select the Network and Sharing Center icon In the following Screen choose Change Adapter Settings icon on the left side panel see Figure 9 1 ED S Control Panel Network and Internet Network and Sharing Center Control Panel Home View your basic network information and set up connections Change adapter settings A x D Ch dv d shari z be a This computer Internet View your active networks You are currently not connected to any networks Change your networking settings Figure 9 1 Choose Change Adapter Settings Option on 3 Check the list of installed components to make sure a network card is installed If not install a driver for the card 4 Double click on the network card icon that represents the network card that will be connected to the EyeLink 1000 Plus Host PC 5 Select the Properties button 6 Select the Internet Protocol Version 4 TCP IPv4 and then click on the Properties button see Figure 9 2 Display PC Hardware and Software Installation 2005 2013 SR Research Ltd 7 Select the Use the following IP address radio button Enter the IP address of 100 1 1 2 The last digit of the IP address can increase for other computers on the EyeLink
110. ure to measure the distance from the eye to the screen top and bottom as well as the length and width of the projected Long Range Mount Installation 2005 2013 SR Research Ltd image This time the measurement is in millimeters Use these values to follow Section 8 4 Customizing Screen Settings to modify the PHYSICAL INT file settings on your Host PC 7 7 2 Assemble the Long Range Mount Components 1 Position the Camera Head and Illuminator If there are no obstructions in the line of sight from the Camera Head or Illuminator to the eye to be tracked then the side of the Mounting Bar for these items is not critically important though having the Iuminator on the same side as the tracked eye Camera Head more centrally located may result in better illumination for monocular tracking Decide on the side of the Mounting Bar to place the Camera Head and Illuminator and slip them into position ensuring the cabling for the Camera Head is emerging toward the interior of the Mounting Bar The Camera Head may need to be reattached to the Camera Head bracket at a different vertical orientation to ensure the cabling emerges toward the interior thereby protecting it from getting bumped Vertical orientation can be easily changed by removing the Camera Head from its bracket and simply reattaching it to the bracket upside down before tightening it to the Camera Head clip For binocular recording the Camera Head bracket needs to be tightened t
111. usions on the mount to ensure the camera is in the right position the camera is parallel to the table 3 After the camera is mounted onto the Desktop Mount connect the two illuminator cables that come out of the Desktop mount to the right side of the EyeLink camera Connect the camera power supply that was provided with your system to the power Desktop Mount EyeLink Remote Installation 2005 2013 SR Research Ltd connector on the right side of the camera see Figure 4 2 and plug in the camera Ethernet cable Camera Power Supply Camera Ethernet Cable lltuminator Cables LA Figure 4 2 Camera and Illuminator Cables from Desktop Mount 4 2 Adjusting the Desktop Mount Follow the steps below to adjust the Desktop mount 1 If you are using the chin rest supplied by SR Research Ltd please check whether the table is suitable for mounting the chin rest the table used should have a minimum thickness of 1 8 cm and a maximum thickness of 8 0 cm Loosen the table clamp by turning the knob counterclockwise place the table clamp fully onto the table and then tighten it clockwise Check that it is firmly secured by gently attempting to rock the table clamp base free If the table clamp base wobbles tighten it further Next place the forehead rest over the chinrest poles and tighten the knobs at the desired height 2 The Display PC monitor should be set such that when the participants are seated and looking straight ahe
112. utothreshold procedure Autothreshold simply guesses at some appropriate threshold levels to use in determining which parts of the image belong to the pupil and the corneal reflection Pupil threshold levels should be above 60 presented below the thumbnail image otherwise this indicates that the illumination is not good Below a level of about 60 will produce noisy sample data even if the system is able to track the eye The corneal reflection threshold is rather robust at most threshold settings but typically optimal recordings can be achieved by reducing the threshold slightly to completely fill out the coloring of the corneal reflection Long Range Mount Installation 2005 2013 SR Research Ltd If you are running the TRACK EXE program as recommended press C to begin the camera setup calibration and validation steps Refer to the tutorial of Section 3 of the User Manual for more information about performing the calibration and validation under normal behavioral laboratory situations 7 10 Calibration and Drift Correcting with the Long Range System There are a number of operational differences between the 1000 Plus between use in the behavioral laboratory and in environments where the Long Range amount is typically installed The first of these issues has to do with configuring custom calibration layouts so that odd shaped spatial areas can be calibrated A second issue has to do with whether and how to employ drift correction in conjun
113. y change this setting If you are using other Display software e g Psychtoolbox E Prime Presentation it is recommended that you configure the display resolution setting by sending the screen_pixel_coords command to the eye tracker in your experiment code please see the examples that come with the EyeLink Display Software for an illustration of how this can be done If the EyeLink Display Software is not being used e g you are doing a stand alone recording or your own Display software doesn t send out the screen_pixel_coords command then the default value for this parameter will apply Please enter the resolution e g 800 x 600 into the cells see Figure 8 6 and save the changes Testing the Host PC Installation 2005 2013 SR Research Ltd Screen Dimensions width 800 pixels Display Resolution i Eye to Screen Distance Camera to Screen Distance height 600 pixels Default display resolution Width in pixels 800 Height in pixels 600 Note This setting only needs to be updated if your Display PC software does not modify the screen_pixel_ resolution parameter Experiment Builder automatically updates this parameter based on the project s resolution Back Next Figure 8 6 Updating Display Resolution 8 4 3 Eye to Screen Distance Please follow the steps below to enter measurements that inform the eye tracker of the eye to screen viewing distance For users of the Remote Mode of the eye tracker u

EyeLink 1000 Plus Installation Guide Tower, Desktop, LCD Arm

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