Testing neuronal accounts of anisotropic motion perception with computational modelling.

ABSTRACT: There is an over-representation of neurons in early visual cortical areas that respond most strongly to cardinal (horizontal and vertical) orientations and directions of visual stimuli, and cardinal- and oblique-preferring neurons are reported to have different tuning curves. Collectively, these neuronal anisotropies can explain two commonly-reported phenomena of motion perception - the oblique effect and reference repulsion - but it remains unclear whether neuronal anisotropies can simultaneously account for both perceptual effects. We show in psychophysical experiments that reference repulsion and the oblique effect do not depend on the duration of a moving stimulus, and that brief adaptation to a single direction simultaneously causes a reference repulsion in the orientation domain, and

SUBMITTER: Wong W 

PROVIDER: S-EPMC4237403 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature