Motion opponency examined throughout visual cortex with multivariate pattern analysis of fMRI data.

ABSTRACT: This study explores how the human brain solves the challenge of flicker noise in motion processing. Despite providing no useful directional motion information, flicker is common in the visual environment and exhibits omnidirectional motion energy which is processed by low-level motion detectors. Models of motion processing propose a mechanism called motion opponency that reduces flicker processing. Motion opponency involves the pooling of local motion signals to calculate an overall motion direction. A neural correlate of motion opponency has been observed in human area MT+/V5, whereby stimuli with perfectly balanced motion energy constructed from dots moving in counter-phase elicit a weaker response than nonbalanced (in-phase) motion stimuli. Building on this previous work, we used multiv

SUBMITTER: Silva AE 

PROVIDER: S-EPMC7721233 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature