Microsaccade-rhythmic modulation of neural synchronization and coding within and across cortical areas V1 and V2.

ABSTRACT: Primates sample their visual environment actively through saccades and microsaccades (MSs). Saccadic eye movements not only modulate neural spike rates but might also affect temporal correlations (synchrony) among neurons. Neural synchrony plays a role in neural coding and modulates information transfer between cortical areas. The question arises of how eye movements shape neural synchrony within and across cortical areas and how it affects visual processing. Through local field recordings in macaque early visual cortex while monitoring eye position and through neural network simulations, we find 2 distinct synchrony regimes in early visual cortex that are embedded in a 3- to 4-Hz MS-related rhythm during visual fixation. In the period shortly after an MS ("transient period"), synchrony wa

SUBMITTER: Lowet E 

PROVIDER: S-EPMC5997357 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature