Synchronization patterns reveal neuronal coding of working memory content.
MVPA
auditory
functional connectivity
machine learning
magnetoencephalography
phase synchronization
working memory
Journal
Cell reports
ISSN: 2211-1247
Titre abrégé: Cell Rep
Pays: United States
ID NLM: 101573691
Informations de publication
Date de publication:
24 08 2021
24 08 2021
Historique:
received:
17
09
2020
revised:
26
04
2021
accepted:
28
07
2021
entrez:
25
8
2021
pubmed:
26
8
2021
medline:
12
2
2022
Statut:
ppublish
Résumé
Neuronal oscillations are suggested to play an important role in auditory working memory (WM), but their contribution to content-specific representations has remained unclear. Here, we measure magnetoencephalography during a retro-cueing task with parametric ripple-sound stimuli, which are spectrotemporally similar to speech but resist non-auditory memory strategies. Using machine learning analyses, with rigorous between-subject cross-validation and non-parametric permutation testing, we show that memorized sound content is strongly represented in phase-synchronization patterns between subregions of auditory and frontoparietal cortices. These phase-synchronization patterns predict the memorized sound content steadily across the studied maintenance period. In addition to connectivity-based representations, there are indices of more local, "activity silent" representations in auditory cortices, where the decoding accuracy of WM content significantly increases after task-irrelevant "impulse stimuli." Our results demonstrate that synchronization patterns across auditory sensory and association areas orchestrate neuronal coding of auditory WM content. This connectivity-based coding scheme could also extend beyond the auditory domain.
Identifiants
pubmed: 34433024
pii: S2211-1247(21)01000-7
doi: 10.1016/j.celrep.2021.109566
pmc: PMC8428113
mid: NIHMS1735642
pii:
doi:
Types de publication
Clinical Trial
Journal Article
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
109566Subventions
Organisme : NIDCD NIH HHS
ID : R01 DC016915
Pays : United States
Organisme : NINDS NIH HHS
ID : R01 NS104585
Pays : United States
Organisme : NIDCD NIH HHS
ID : R01 DC017991
Pays : United States
Organisme : NIDCD NIH HHS
ID : R01 DC016765
Pays : United States
Organisme : NIBIB NIH HHS
ID : P41 EB015896
Pays : United States
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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