Interneuronal correlations at longer time scales predict decision signals for bistable structure-from-motion perception.

ABSTRACT: Perceptual decisions are thought to depend on the activation of task-relevant neurons, whose activity is often correlated in time. Here, we examined how the temporal structure of shared variability in neuronal firing relates to perceptual choices. We recorded stimulus-selective neurons from visual area V5/MT while two monkeys (Macaca mulatta) made perceptual decisions about the rotation direction of structure-from-motion cylinders. Interneuronal correlations for a perceptually ambiguous cylinder stimulus were significantly higher than those for unambiguous cylinders or for random 2D motion during passive viewing. Much of the difference arose from correlations at relatively long timescales (hundreds of milliseconds). Choice-related neural activity (quantified as choice probability; CP) for

SUBMITTER: Wasmuht DF 

PROVIDER: S-EPMC6686021 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature