TY  - JOUR
A1  - Yiling, Yang
A1  - Klon-Lipok, Johanna
A1  - Shapcott, Katharine
A1  - Lazar, Andreea
A1  - Singer, Wolf
T1  - Dynamic fading memory and expectancy effects in monkey primary visual cortex
T2  - bioRxiv
N2  - In order to investigate the involvement of primary visual cortex (V1) in working memory (WM), parallel, multisite recordings of multiunit activity were obtained from monkey V1 while the animals performed a delayed match-to-sample (DMS) task. During the delay period, V1 population firing rate vectors maintained a lingering trace of the sample stimulus that could be reactivated by intervening impulse stimuli that enhanced neuronal firing. This fading trace of the sample did not require active engagement of the monkeys in the DMS task and likely reflects the intrinsic dynamics of recurrent cortical networks in lower visual areas. This renders an active, attention-dependent involvement of V1 in the maintenance of working memory contents unlikely. By contrast, population responses to the test stimulus depended on the probabilistic contingencies between sample and test stimuli. Responses to tests that matched expectations were reduced which agrees with concepts of predictive coding.
Y1  - 2023
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/83004
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-830047
UR  - https://www.biorxiv.org/content/10.1101/2023.11.06.565858v1
IS  - 2023.11.06.565858 Version 1
CY  - bioRxiv
ER  -