A general decoding strategy explains the relationship between behavior and correlated variability.

ABSTRACT: Improvements in perception are frequently accompanied by decreases in correlated variability in sensory cortex. This relationship is puzzling because overall changes in correlated variability should minimally affect optimal information coding. We hypothesize that this relationship arises because instead of using optimal strategies for decoding the specific stimuli at hand, observers prioritize generality: a single set of neuronal weights to decode any stimuli. We tested this using a combination of multineuron recordings in the visual cortex of behaving rhesus monkeys and a cortical circuit model. We found that general decoders optimized for broad rather than narrow sets of visual stimuli better matched the animals' decoding strategy, and that their performance was more related to th

SUBMITTER: Ni AM 

PROVIDER: S-EPMC9170243 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature