Periodic patterns moving in opposite directions in the two eyes can generate a static percept.
We reasoned that moving binocular patterns would be integrated more easily when competing less with disparity, ie when they are oriented vertically rather than horizontally. We therefore studied the integration of the binocular motion signals at different orientations. The stimuli were pairs of Gabor patches moving perpendicularly to their orientation and in opposite directions relative to the fixation cross. The Gabors moved inward in one eye and outward in the other. Observers had to indicate whether the stimulus was moving in or out.