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Intersecting distributed networks support convergent linguistic functioning across different languages in bilinguals
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Geng, Shujie, Guo, Wanwan, Rolls, Edmund T., Xu, Kunyu, Jia, Tianye, Zhou, Wei, Blakemore, Colin, Tan, Li-Hai, Cao, Miao and Feng, Jianfeng (2023) Intersecting distributed networks support convergent linguistic functioning across different languages in bilinguals. Communications Biology, 6 (1). 99. doi:10.1038/s42003-023-04446-5 ISSN 2399-3642.
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Official URL: http://doi.org/10.1038/s42003-023-04446-5
Abstract
How bilingual brains accomplish the processing of more than one language has been widely investigated by neuroimaging studies. The assimilation-accommodation hypothesis holds that both the same brain neural networks supporting the native language and additional new neural networks are utilized to implement second language processing. However, whether and how this hypothesis applies at the finer-grained levels of both brain anatomical organization and linguistic functions remains unknown. To address this issue, we scanned Chinese-English bilinguals during an implicit reading task involving Chinese words, English words and Chinese pinyin. We observed broad brain cortical regions wherein interdigitated distributed neural populations supported the same cognitive components of different languages. Although spatially separate, regions including the opercular and triangular parts of the inferior frontal gyrus, temporal pole, superior and middle temporal gyrus, precentral gyrus and supplementary motor areas were found to perform the same linguistic functions across languages, indicating regional-level functional assimilation supported by voxel-wise anatomical accommodation. Taken together, the findings not only verify the functional independence of neural representations of different languages, but show co-representation organization of both languages in most language regions, revealing linguistic-feature specific accommodation and assimilation between first and second languages.
Item Type: | Journal Article | |||||||||||||||||||||
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Subjects: | P Language and Literature > P Philology. Linguistics Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software Q Science > QP Physiology |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | |||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Neural circuitry -- Adaptation, Neural networks (Computer science), Computational neuroscience, Second language acquisition, Computational linguistics, Brain -- Localization of functions | |||||||||||||||||||||
Journal or Publication Title: | Communications Biology | |||||||||||||||||||||
Publisher: | Nature Publishing Group | |||||||||||||||||||||
ISSN: | 2399-3642 | |||||||||||||||||||||
Official Date: | 25 January 2023 | |||||||||||||||||||||
Dates: |
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Volume: | 6 | |||||||||||||||||||||
Number: | 1 | |||||||||||||||||||||
Article Number: | 99 | |||||||||||||||||||||
DOI: | 10.1038/s42003-023-04446-5 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||
Date of first compliant deposit: | 1 March 2023 | |||||||||||||||||||||
Date of first compliant Open Access: | 1 March 2023 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
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