Interhemispheric transfer of working memories.
cognition
interhemispheric
neural synchrony
prefrontal cortex
working memory
Journal
Neuron
ISSN: 1097-4199
Titre abrégé: Neuron
Pays: United States
ID NLM: 8809320
Informations de publication
Date de publication:
17 03 2021
17 03 2021
Historique:
received:
13
08
2020
revised:
17
12
2020
accepted:
14
01
2021
pubmed:
10
2
2021
medline:
27
3
2021
entrez:
9
2
2021
Statut:
ppublish
Résumé
Visual working memory (WM) storage is largely independent between the left and right visual hemifields/cerebral hemispheres, yet somehow WM feels seamless. We studied how WM is integrated across hemifields by recording neural activity bilaterally from lateral prefrontal cortex. An instructed saccade during the WM delay shifted the remembered location from one hemifield to the other. Before the shift, spike rates and oscillatory power showed clear signatures of memory laterality. After the shift, the lateralization inverted, consistent with transfer of the memory trace from one hemisphere to the other. Transferred traces initially used different neural ensembles from feedforward-induced ones, but they converged at the end of the delay. Around the time of transfer, synchrony between the two prefrontal hemispheres peaked in theta and beta frequencies, with a directionality consistent with memory trace transfer. This illustrates how dynamics between the two cortical hemispheres can stitch together WM traces across visual hemifields.
Identifiants
pubmed: 33561399
pii: S0896-6273(21)00038-6
doi: 10.1016/j.neuron.2021.01.016
pmc: PMC9134350
mid: NIHMS1808824
pii:
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
1055-1066.e4Subventions
Organisme : NIMH NIH HHS
ID : R37 MH087027
Pays : United States
Organisme : NIGMS NIH HHS
ID : T32 GM007753
Pays : United States
Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2021 The Author(s). Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests The authors declare no competing interests.
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