This binocular stimulus consists of a grid of drifting Gabor patches. It is designed to emulate the pseudoplaid stimulus of Rokers, Czuba, Cormack and Huk (2011, Journal of Vision).

Gabor functions at two orientations are displayed in both eyes. When they are matched across eyes, the orientations are the same but the directions of drift are opposite. If motion is integrated across patches, then the stimulus in each eye can be seen as moving in the pattern direction. Opposite left-right pattern directions in both eyes can lead to the perception of motion in depth.



The current stimulus generation algorithm runs slower than necessary because each Gabor is drawn within an image having the full size of the stimulus field. A faster algorithm could easily be developed.

Some features of the Rokers et al. (2011) stimulus have not been implemented, such as the limited lifetimes of the Gabor patches and the ability to prevent binocular matches across the eyes.


General stimulus control