Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.

Seeing the articulatory gestures of the speaker ("speech reading") enhances speech perception especially in noisy conditions. Recent neuroimaging studies tentatively suggest that speech reading activates speech motor system, which then influences superior-posterior temporal lobe auditory a...

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Autores principales:	Ying-Hua Chu, Fa-Hsuan Lin, Yu-Jen Chou, Kevin W-K Tsai, Wen-Jui Kuo, Iiro P Jääskeläinen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/91450b05feee451b99d37420d90ac90d
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spelling	oai:doaj.org-article:91450b05feee451b99d37420d90ac90d2021-11-18T08:45:13ZEffective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.1932-620310.1371/journal.pone.0080265https://doaj.org/article/91450b05feee451b99d37420d90ac90d2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24278266/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Seeing the articulatory gestures of the speaker ("speech reading") enhances speech perception especially in noisy conditions. Recent neuroimaging studies tentatively suggest that speech reading activates speech motor system, which then influences superior-posterior temporal lobe auditory areas via an efference copy. Here, nineteen healthy volunteers were presented with silent videoclips of a person articulating Finnish vowels /a/, /i/ (non-targets), and /o/ (targets) during event-related functional magnetic resonance imaging (fMRI). Speech reading significantly activated visual cortex, posterior fusiform gyrus (pFG), posterior superior temporal gyrus and sulcus (pSTG/S), and the speech motor areas, including premotor cortex, parts of the inferior (IFG) and middle (MFG) frontal gyri extending into frontal polar (FP) structures, somatosensory areas, and supramarginal gyrus (SMG). Structural equation modelling (SEM) of these data suggested that information flows first from extrastriate visual cortex to pFS, and from there, in parallel, to pSTG/S and MFG/FP. From pSTG/S information flow continues to IFG or SMG and eventually somatosensory areas. Feedback connectivity was estimated to run from MFG/FP to IFG, and pSTG/S. The direct functional connection from pFG to MFG/FP and feedback connection from MFG/FP to pSTG/S and IFG support the hypothesis of prefrontal speech motor areas influencing auditory speech processing in pSTG/S via an efference copy.Ying-Hua ChuFa-Hsuan LinYu-Jen ChouKevin W-K TsaiWen-Jui KuoIiro P JääskeläinenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 11, p e80265 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ying-Hua Chu Fa-Hsuan Lin Yu-Jen Chou Kevin W-K Tsai Wen-Jui Kuo Iiro P Jääskeläinen Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.
description	Seeing the articulatory gestures of the speaker ("speech reading") enhances speech perception especially in noisy conditions. Recent neuroimaging studies tentatively suggest that speech reading activates speech motor system, which then influences superior-posterior temporal lobe auditory areas via an efference copy. Here, nineteen healthy volunteers were presented with silent videoclips of a person articulating Finnish vowels /a/, /i/ (non-targets), and /o/ (targets) during event-related functional magnetic resonance imaging (fMRI). Speech reading significantly activated visual cortex, posterior fusiform gyrus (pFG), posterior superior temporal gyrus and sulcus (pSTG/S), and the speech motor areas, including premotor cortex, parts of the inferior (IFG) and middle (MFG) frontal gyri extending into frontal polar (FP) structures, somatosensory areas, and supramarginal gyrus (SMG). Structural equation modelling (SEM) of these data suggested that information flows first from extrastriate visual cortex to pFS, and from there, in parallel, to pSTG/S and MFG/FP. From pSTG/S information flow continues to IFG or SMG and eventually somatosensory areas. Feedback connectivity was estimated to run from MFG/FP to IFG, and pSTG/S. The direct functional connection from pFG to MFG/FP and feedback connection from MFG/FP to pSTG/S and IFG support the hypothesis of prefrontal speech motor areas influencing auditory speech processing in pSTG/S via an efference copy.
format	article
author	Ying-Hua Chu Fa-Hsuan Lin Yu-Jen Chou Kevin W-K Tsai Wen-Jui Kuo Iiro P Jääskeläinen
author_facet	Ying-Hua Chu Fa-Hsuan Lin Yu-Jen Chou Kevin W-K Tsai Wen-Jui Kuo Iiro P Jääskeläinen
author_sort	Ying-Hua Chu
title	Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.
title_short	Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.
title_full	Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.
title_fullStr	Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.
title_full_unstemmed	Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.
title_sort	effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/91450b05feee451b99d37420d90ac90d
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Effective cerebral connectivity during silent speech reading revealed by functional magnetic resonance imaging.

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