Spatial phase differences can drive apparent motion

Can shape differences drive apparent motion? Results from previous research are equivocal. Much of the confusion may be due to the use of relatively complex stimuli: letters or geometric shapes, comprising many spatial frequencies, phases, orientations, and contrasts. We focus on relatively simple stimuli: Gaussian dampedf+nf compound sinewave gratings. We examine whether relative phase differences, which are critical for shape perception, can …