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To indicate that your animal is actually fixating at that position, send the following message:
"FixationSpotPosition CalibrateEyePosition <X> <Y> <ScreenWidth> <ScreenHeight>"
Future directions:
Integrate plotting of eye position as a function of trials into PSTH.where X,Y is the position of the fixation spot.
Calibration procedures:
Currently, only fixed gain is implemented. That is, the user manually input the gain of each channel, and when a CalibrateEyePosition message arrives, it calculates the offset using the following equation:
Offset = RawEyePositionSignal - (FixationSpotPosition-ScreenCenter) / Gain
Future implementation will include automatic calculation of both gain and offset from two (or more) subsequent calls of "CalibrateEyePosition" (using least squares fit).