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Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain

A large body of previous neuroimaging studies suggests that multiple languages are processed and organized in a single neuroanatomical system in the bilingual brain, although differential activation may be seen in some studies because of different proficiency levels and/or age of acquisition of the...

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Autores principales: Xu, Min, Baldauf, Daniel, Chang, Chun Qi, Desimone, Robert, Tan, Li Hai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5507633/
https://www.ncbi.nlm.nih.gov/pubmed/28706990
http://dx.doi.org/10.1126/sciadv.1603309
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author Xu, Min
Baldauf, Daniel
Chang, Chun Qi
Desimone, Robert
Tan, Li Hai
author_facet Xu, Min
Baldauf, Daniel
Chang, Chun Qi
Desimone, Robert
Tan, Li Hai
author_sort Xu, Min
collection PubMed
description A large body of previous neuroimaging studies suggests that multiple languages are processed and organized in a single neuroanatomical system in the bilingual brain, although differential activation may be seen in some studies because of different proficiency levels and/or age of acquisition of the two languages. However, one important possibility is that the two languages may involve interleaved but functionally independent neural populations within a given cortical region, and thus, distinct patterns of neural computations may be pivotal for the processing of the two languages. Using functional magnetic resonance imaging (fMRI) and multivariate pattern analyses, we tested this possibility in Chinese-English bilinguals when they performed an implicit reading task. We found a broad network of regions wherein the two languages evoked different patterns of activity, with only partially overlapping patterns of voxels in a given region. These regions, including the middle occipital cortices, fusiform gyri, and lateral temporal, temporoparietal, and prefrontal cortices, are associated with multiple aspects of language processing. The results suggest the functional independence of neural computations underlying the representations of different languages in bilinguals.
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spelling pubmed-55076332017-07-13 Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain Xu, Min Baldauf, Daniel Chang, Chun Qi Desimone, Robert Tan, Li Hai Sci Adv Research Articles A large body of previous neuroimaging studies suggests that multiple languages are processed and organized in a single neuroanatomical system in the bilingual brain, although differential activation may be seen in some studies because of different proficiency levels and/or age of acquisition of the two languages. However, one important possibility is that the two languages may involve interleaved but functionally independent neural populations within a given cortical region, and thus, distinct patterns of neural computations may be pivotal for the processing of the two languages. Using functional magnetic resonance imaging (fMRI) and multivariate pattern analyses, we tested this possibility in Chinese-English bilinguals when they performed an implicit reading task. We found a broad network of regions wherein the two languages evoked different patterns of activity, with only partially overlapping patterns of voxels in a given region. These regions, including the middle occipital cortices, fusiform gyri, and lateral temporal, temporoparietal, and prefrontal cortices, are associated with multiple aspects of language processing. The results suggest the functional independence of neural computations underlying the representations of different languages in bilinguals. American Association for the Advancement of Science 2017-07-12 /pmc/articles/PMC5507633/ /pubmed/28706990 http://dx.doi.org/10.1126/sciadv.1603309 Text en Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Xu, Min
Baldauf, Daniel
Chang, Chun Qi
Desimone, Robert
Tan, Li Hai
Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain
title Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain
title_full Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain
title_fullStr Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain
title_full_unstemmed Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain
title_short Distinct distributed patterns of neural activity are associated with two languages in the bilingual brain
title_sort distinct distributed patterns of neural activity are associated with two languages in the bilingual brain
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5507633/
https://www.ncbi.nlm.nih.gov/pubmed/28706990
http://dx.doi.org/10.1126/sciadv.1603309
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