Phonemic segmentation of narrative speech in human cerebral cortex.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
18 07 2023
18 07 2023
Historique:
received:
22
09
2022
accepted:
29
06
2023
medline:
21
7
2023
pubmed:
19
7
2023
entrez:
18
7
2023
Statut:
epublish
Résumé
Speech processing requires extracting meaning from acoustic patterns using a set of intermediate representations based on a dynamic segmentation of the speech stream. Using whole brain mapping obtained in fMRI, we investigate the locus of cortical phonemic processing not only for single phonemes but also for short combinations made of diphones and triphones. We find that phonemic processing areas are much larger than previously described: they include not only the classical areas in the dorsal superior temporal gyrus but also a larger region in the lateral temporal cortex where diphone features are best represented. These identified phonemic regions overlap with the lexical retrieval region, but we show that short word retrieval is not sufficient to explain the observed responses to diphones. Behavioral studies have shown that phonemic processing and lexical retrieval are intertwined. Here, we also have identified candidate regions within the speech cortical network where this joint processing occurs.
Identifiants
pubmed: 37463907
doi: 10.1038/s41467-023-39872-w
pii: 10.1038/s41467-023-39872-w
pmc: PMC10354060
doi:
Types de publication
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
4309Commentaires et corrections
Type : ErratumIn
Informations de copyright
© 2023. The Author(s).
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