返回Google圖書搜尋

Stimulus-specific Plasticity of Macaque V1 Spike Rates and Gamma

Alina PeterBenjamin M. J. StauchKatharine A. ShapcottKleopatra KouroupakiJoscha Tapani SchmiedtLiane KleinJohanna Klon-LipokJarrod Robert DowdallMarieke L. SchölvinckMartin VinckWolf SingerMichael Christoph SchmidPascal Fries

出版	Universitätsbibliothek Johann Christian Senckenberg, 2020
URL	http://books.google.com.hk/books?id=5yMc0AEACAAJ&hl=&source=gbs_api

註釋When a visual stimulus is repeated, average neuronal responses typically decrease, yet they might maintain or even increase their impact through increased synchronization. Previous work has found that many repetitions of a grating lead to increasing gamma-band synchronization. Here we show in awake macaque area V1 that both, repetition-related reductions in firing rate and increases in gamma are specific to the repeated stimulus. These effects showed some persistence on the timescale of minutes. Further, gamma increases were specific to the presented stimulus location. Importantly, repetition effects on gamma and on firing rates generalized to natural images. These findings suggest that gamma-band synchronization subserves the adaptive processing of repeated stimulus encounters, both for generating efficient stimulus responses and possibly for memory formation.