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Cortical Thickness in bilingual and monolingual children: Relationships to language use and language skill
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In: Neuroimage (2021)
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Inconsistency of Findings due to Low Power: A Structural MRI Study of Bilingualism
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In: Brain Lang (2019)
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Anterior insular thickness predicts speech sound learning ability in bilinguals.
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In: NeuroImage, vol 165 (2018)
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Becoming a balanced, proficient bilingual: Predictions from age of acquisition & genetic background
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Symbiosis, Parasitism and Bilingual Cognitive Control: A Neuroemergentist Perspective
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Bilingualism Influences Structural Indices of Interhemispheric Organization.
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Bilingual Cortical Control of Between- and Within-Language Competition
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Anterior insular thickness predicts speech sound learning ability in bilinguals☆
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Degree of Foreign Accent in Bilingual Children Predicts Surface Area of the Bilateral Superior Temporal Gyrus ...
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Individual differences in the bilingual brain: The role of language background and DRD2 genotype in verbal and non-verbal cognitive control
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Abstract:
Bilingual language control may involve cognitive control, including inhibition and switching. These types of control have been previously associated with neural activity in the inferior frontal gyrus (IFG) and the anterior cingulate cortex (ACC). In previous studies, the DRD2 gene, related to dopamine availability in the striatum, has been found to play a role in neural activity during cognitive control tasks, with carriers of the gene’s A1 allele showing different patterns of activity in inferior frontal regions during cognitive control tasks than non-carriers. The current study sought to extend these findings to the domain of bilingual language control. Forty-nine Spanish-English bilinguals participated in this study by providing DNA samples through saliva, completing background questionnaires, and performing a language production task (picture-naming), a non-verbal inhibition task (Simon task), and a non-verbal switching task (shape-color task) in the fMRI scanner. The fMRI data were analyzed to determine whether variation in the genetic background or bilingual language background predicts neural activity in the IFG and ACC during these three tasks. Results indicate that genetic and language background variables predicted neural activity in the IFG during English picture naming. Variation in only the genetic background predicted neural activity in the ACC during the shape-color switching task; variation in only the language background predicted neural activity in the ACC and IFG during the Simon task. These results suggest that variation in the DRD2 gene should not be ignored when drawing conclusions about bilingual verbal and non-verbal cognitive control.
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Article
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URL: https://doi.org/10.1016/j.jneuroling.2016.06.008 http://www.ncbi.nlm.nih.gov/pubmed/28082765 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5222542/
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Bilingualism Influences Structural Indices of Interhemispheric Organization
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Neural Correlates of Single Word Reading in Bilingual Children and Adults
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Beyond the bilingual advantage: The potential role of genes and environment on the development of cognitive control
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