Surprising effects of stimulus repetition on neuronal firing rates and gamma-band synchronization in awake macaque V1.

ABSTRACT: Stimulus repetition is abundant, because the environment is redundant and/or because it is redundantly sampled. This offers an opportunity to optimize the processing of repeated stimuli. Indeed, stimulus repetition leads to classically described neuronal response decreases, and to more recently described neuronal gamma synchronization increases (sometimes preceded by decreases for a few trials). Here, we used a full-screen colored background (FSCB) and a flashed black bar, while recording multi-unit activity (MUA) and local field potentials (LFP) from area V1 of an awake macaque monkey. We found that the FSCB repetition induced neuronal response increases (sometimes preceded by decreases for a few trials) and gamma synchronization decreases (preceded by increases for a few trials). These e

SUBMITTER: Pandinelli M 

PROVIDER: S-EPMC12265678 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature