期刊
BRAIN AND COGNITION
卷 117, 期 -, 页码 49-56出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bandc.2017.06.003
关键词
Resting-state functional magnetic resonance imaging (rs-fMRI); Intrinsic functional connectivity; Bilingualism; Cognitive control; Default mode network (DMN); Task-positive attention network
资金
- Canadian Institutes of Health Research
- Natural Sciences and Engineering Research Council of Canada
- Blema and Arnold Steinberg Family Foundation
This study explores the effect of individual differences in the age of acquisition of a second language using resting-state functional magnetic resonance imaging (rs-fMRI) to examine functional connectivity and its relation with cognitive control within bilinguals. We compared simultaneous bilinguals, who learned two languages from birth, to sequential bilinguals, who learned a second language following mastery of their first language. Results show an effect of language experience on the strength of anticorrelation between the default mode network and the task-positive attention network and on cognitive control, with simultaneous bilinguals demonstrating stronger anticorrelations between the two networks, as well as superior cognitive control compared to sequential bilinguals. These findings demonstrate that the timing of language learning may have an impact on cognitive control, with the simultaneous learning of two languages being associated with more optimal brain connectivity for cognitive control compared to sequential language learning.
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