Dissociation in neuronal encoding of object versus surface motion in the primate brain.

ABSTRACT: A paradox exists in our understanding of motion processing in the primate visual system: neurons in the dorsal motion processing stream often strikingly fail to encode long-range and perceptually salient jumps of a moving stimulus. Psychophysical studies suggest that such long-range motion, which requires integration over more distant parts of the visual field, may be based on higher-order motion processing mechanisms that rely on feature or object tracking. Here, we demonstrate that ventral visual area V4, long recognized as critical for processing static scenes, includes neurons that maintain direction selectivity for long-range motion, even when conflicting local motion is present. These V4 neurons exhibit specific selectivity for the motion of objects, i.e., targets with defined bounda

SUBMITTER: Bigelow A 

PROVIDER: S-EPMC9992021 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature