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- W3036006971 abstract "The brain representation of language in bilinguals is sculptured by several factors, such as age of acquisition (AoA) and proficiency level (PL) in second language. Although the effect of AoA-L2 on brain function and structure has been studied, little attention is devoted to dynamic properties of the language network and their differences between early and late bilinguals. In this study, we acquired resting-state fMRI data from early and late Cantonese (L1)-Mandarin (L2) bilinguals with high PLs of verbal fluency in both languages. We then analyzed dynamic functional connectivity (dFC) by using the sliding-windows approach, estimated the dFC states by using the k-means clustering algorithm, and calculated dynamic topological properties of the language network for the early and late bilinguals. We detected four dFC states, State 1, State 2, State 3 and State 4, which may be related to phonetic processing, semantic processing, language control and syntactic processing, respectively. Compared to the late bilinguals, the early bilinguals showed higher dFC between the inferior frontal area and temporal area in State 1 and State 2, while higher dFC between cerebellum and other regions in State 3. The early bilinguals showed higher clustering coefficient, local and global efficiency in State 1 and State 3, but lower characteristic path length in State 1, than the late bilinguals. Together, these results suggested that AoA-L2 affects temporal neural activation and dynamic topological properties of the language network. These findings provide new information to understand the effect of experience of L2 acquisition on language network in bilinguals." @default.
- W3036006971 created "2020-06-25" @default.
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- W3036006971 date "2020-06-18" @default.
- W3036006971 modified "2023-10-16" @default.
- W3036006971 title "Dynamic Language Network in Early and Late Cantonese–Mandarin Bilinguals" @default.
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- W3036006971 doi "https://doi.org/10.3389/fpsyg.2020.01189" @default.
- W3036006971 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7314931" @default.
- W3036006971 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32625136" @default.
- W3036006971 hasPublicationYear "2020" @default.
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