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Bilingual Cortical Control of Between- and Within-Language Competition
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Neural Correlates of Single Word Reading in Bilingual Children and Adults
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Differential Recruitment of Executive Control Regions during Phonological Competition in Monolinguals and Bilinguals
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Language experience differentiates prefrontal and subcortical activation of the cognitive control network in novel word learning
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Abstract:
The purpose of this study was to examine the cognitive control mechanisms in adult English speaking monolinguals compared to early sequential Spanish-English bilinguals during the initial stages of novel word learning. Functional magnetic resonance imaging during a lexico-semantic task after only two hours of exposure to novel German vocabulary flashcards showed that monolinguals activated a broader set of cortical control regions associated with higher-level cognitive processes, including the supplementary motor area (SMA), anterior cingulate (ACC), and dorsolateral prefrontal cortex (DLPFC), as well as the caudate, implicated in cognitive control of language. However, bilinguals recruited a more localized subcortical network that included the putamen, associated more with motor control of language. These results suggest that experience managing multiple languages may differentiate the learning strategy and subsequent neural mechanisms of cognitive control used by bilinguals compared to monolinguals in the early stages of novel word learning.
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Article
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3545100 http://www.ncbi.nlm.nih.gov/pubmed/23194816 https://doi.org/10.1016/j.neuroimage.2012.11.018
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