A causal role for V5/MT neurons coding motion-disparity conjunctions in resolving perceptual ambiguity.

ABSTRACT: Judgments about the perceptual appearance of visual objects require the combination of multiple parameters, like location, direction, color, speed, and depth. Our understanding of perceptual judgments has been greatly informed by studies of ambiguous figures, which take on different appearances depending upon the brain state of the observer. Here we probe the neural mechanisms hypothesized as responsible for judging the apparent direction of rotation of ambiguous structure from motion (SFM) stimuli. Resolving the rotation direction of SFM cylinders requires the conjoint decoding of direction of motion and binocular depth signals [1, 2]. Within cortical visual area V5/MT of two macaque monkeys, we applied electrical stimulation at sites with consistent multiunit tuning to combinations of bi

SUBMITTER: Krug K 

PROVIDER: S-EPMC3739008 | biostudies-literature | 2013 Aug

REPOSITORIES: biostudies-literature