Directed information exchange between cortical layers in macaque V1 and V4 and its modulation by selective attention.

ABSTRACT: Achieving behavioral goals requires integration of sensory and cognitive information across cortical laminae and cortical regions. How this computation is performed remains unknown. Using local field potential recordings and spectrally resolved conditional Granger causality (cGC) analysis, we mapped visual information flow, and its attentional modulation, between cortical layers within and between macaque brain areas V1 and V4. Stimulus-induced interlaminar information flow within V1 dominated upwardly, channeling information toward supragranular corticocortical output layers. Within V4, information flow dominated from granular to supragranular layers, but interactions between supragranular and infragranular layers dominated downwardly. Low-frequency across-area communication was stronger

SUBMITTER: Ferro D 

PROVIDER: S-EPMC8000025 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature