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--- biac:experimentalcontrol:eyetracker [2014/08/04 16:03]
127.0.0.1 external edit
+++ biac:experimentalcontrol:eyetracker [2023/02/23 18:43] (current)
@@ Line 38: / Line 38: @@
 ====== Starting the eyetracker software ======
-You must start the "Viewpoint" eyetracker program (on Donders at the 3T) in order to activate the video camera.  During the setup process, the Viewpoint display should be visible to the subject. Use the [[biac:experimentalcontrol:kvm|KVM switch]] to send the Viewpoint image to the goggles, if the subject is wearing the goggles.  Use the switch to send the Viewpoint display to the projector regardless of whether the subject is using the goggles or the projector; that way the MR tech can see the camera image as well.
+You must start the "Viewpoint" eyetracker program (on Donders at the 3T) in order to activate the video camera.  During the setup process, the Viewpoint display should be visible to the subject. Use the [[biac:experimentalcontrol:hdmi|video switch]] to send the Viewpoint image to the goggles, if the subject is wearing the goggles.  Use the switch to send the Viewpoint display to the projector; that way the MR tech can see the camera image as well.
-Note: If you are using the goggles, the video display on Donders must be in 800x600 mode.  At this resolution you will not be able to see the entire Viewpoint GUI, but the goggles only work at the 800x600 video setting.
 In the [[biac:experimentalcontrol:eyetrackviewpoint|Viewpoint window]] you should be able to see the live camera image. If you don't, use the menu option **View->Video Reset** to reconnect the camera.  If that does not work, check all the cable connections and the On/Off switch inside the magnet room to make sure everything is properly connected. You should also check the **View->Mode** menu option to make sure the camera is in Setup display mode.
 Once you have a video image, use the brightness and contrast sliders in the middle at the top of the Viewpoint display to adjust the camera image until you get a reasonable picture.
-====== Mounting the camera inside the video goggles ======
-The eyetracker camera was designed to mount inside the rubber shield of the Resonance Technology video goggles.
-We have modified the camera mounting hardware so that it will fit better inside the head coil and to make it easier to adust the camera position so that it gets a good view of the subject's eye
-([[biac:experimentalcontrol:eyetrackoriginalsetup|original goggle mount]],
-[[biac:experimentalcontrol:eyetrackbiacsetup|BIAC goggle mount]]). To mount the camera in the goggles, the regular light gray rubber goggle mask must be replaced by the black rubber mask.\\
-**Note:** The rubber goggle mask is held onto the goggles by very delicate rubber hooks that fit over tabs on the goggle casing.  These rubber hooks are fragile and must be handled with care.
-The camera is inserted into the goggles by sliding the mirror into the slot on the side of the rubber mask with the large opening. The mirror should slide all the way into the mask to avoid having the camer bump into the frame of the head coil.
-Note: The black mask adds about a centimeter to the thickness of the video goggles (between the subject's eyes and the head coil). Fitting the goggles with camera inside the head coil can be a tight squeeze for some subjects and may not be possible for subjects for large heads. So if you are planning to do eyetracking with the goggles try to avoid using subjects with large heads.
-Two nylon screws on the camera mount can be used to adjust the camera's view of the eye.

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