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1
Brain network activity in monolingual and bilingual older adults
Abstract: Bilingual older adults typically have better performance on tasks of executive control (EC) than do their monolingual peers, but differences in brain activity due to language experience are not well understood. Based on studies showing a relation between the dynamic range of brain network activity and performance on EC tasks, we hypothesized that life-long bilingual older adults would show increased functional connectivity relative to monolinguals in networks related to EC. We assessed intrinsic functional connectivity and modulation of activity in task vs. fixation periods in two brain networks that are active when EC is engaged, the frontoparietal control network (FPC) and the salience network (SLN). We also examined the default mode network (DMN), which influences behavior through reduced activity during tasks. We found stronger intrinsic functional connectivity in the FPC and DMN in bilinguals than in monolinguals. Although there were no group differences in the modulation of activity across tasks and fixation, bilinguals showed stronger correlations than monolinguals between intrinsic connectivity in the FPC and task-related increases of activity in prefrontal and parietal regions. This bilingual difference in network connectivity suggests that language experience begun in childhood and continued throughout adulthood influences brain networks in ways that may provide benefits in later life. ; Accepted Manuscript
URL: http://nrs.harvard.edu/urn-3:HUL.InstRepos:17533668
https://doi.org/10.1016/j.neuropsychologia.2014.10.042
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2
Cognitive Reserve in Parkinson’s Disease: The Effects of Welsh-English Bilingualism on Executive Function
In: Department of English (2015)
BASE
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3
Effects of Bilingualism and Aging on Executive Function and Working Memory
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4
Brain Network Activity in Monolingual and Bilingual Older Adults
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5
Bilingualism: Consequences for Mind and Brain
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6
Delaying the onset of Alzheimer disease: Bilingualism as a form of cognitive reserve
Craik, Fergus I.M.; Bialystok, Ellen; Freedman, Morris. - : American Academy of Neurology, 2010
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7
Bilingual minds
MPI für Psycholinguistik
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8
Lexical access in bilinguals: Effects of vocabulary size and executive control
In: Journal of neurolinguistics. - Orlando, Fla. : Elsevier 21 (2008) 6, 522-538
OLC Linguistik
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9
Lifespan cognitive development : the roles of representation and control
In: The handbook of aging and cognition (Hillsdale, 2008), p. 557-602
MPI für Psycholinguistik
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10
Lexical access in bilinguals: Effects of vocabulary size and executive control
Bialystok, Ellen; Luk, Gigi; Craik, Fergus I.M.. - : Elsevier BV, 2008
BASE
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