Dynamic fading memory and expectancy effects in monkey primary visual cortex

  • 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.

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Metadaten
Author:Yang YilingORCiDGND, Johanna Klon-Lipok, Katharine ShapcottORCiD, Andreea LazarORCiDGND, Wolf SingerORCiDGND
URN:urn:nbn:de:hebis:30:3-830047
URL:https://www.biorxiv.org/content/10.1101/2023.11.06.565858v1
DOI:https://doi.org/10.1101/2023.11.06.565858
Parent Title (English):bioRxiv
Place of publication:bioRxiv
Document Type:Article
Language:English
Date of Publication (online):2023/11/06
Date of first Publication:2023/11/06
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2024/03/15
Issue:2023.11.06.565858 Version 1
Edition:Version 1
Page Number:26
HeBIS-PPN:517870614
Institutes:Wissenschaftliche Zentren und koordinierte Programme / Frankfurt Institute for Advanced Studies (FIAS)
Angeschlossene und kooperierende Institutionen / MPI für Hirnforschung
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International