Where, when and why brain activation differs for bilinguals and monolinguals during picture naming and reading aloud
| Autor: | David W. Green, Christos Pliatsikas, Mohamed L. Seghier, Susan Prejawa, Sue Ramsden, Cathy J. Price, O Parker Jones, Karine Gazarian, Hwee Ling Lee, Konstantinos Filippopolitis, Alice Grogan, Nilufa Ali |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Adult
Male Speech production Speech perception Adolescent Cognitive Neuroscience Planum temporale Word processing BF Multilingualism 050105 experimental psychology Psycholinguistics Lateralization of brain function 03 medical and health sciences Cellular and Molecular Neuroscience Superior temporal gyrus Young Adult 0302 clinical medicine reading Predictive Value of Tests Image Processing Computer-Assisted Reaction Time Humans Names 0501 psychology and cognitive sciences Aged picture naming Brain Mapping 05 social sciences fMRI Brain Articles bilingualism Middle Aged Magnetic Resonance Imaging Oxygen Pattern Recognition Visual frequency Speech Perception Female Psychology control 030217 neurology & neurosurgery Photic Stimulation Cognitive psychology |
| Zdroj: | Cerebral Cortex Cerebral Cortex (New York, NY) |
| ISSN: | 1047-3211 1460-2199 |
| Popis: | Using functional magnetic resonance imaging, we found that when bilinguals named pictures or read words aloud, in their native or nonnative language, activation was higher relative to monolinguals in 5 left hemisphere regions: dorsal precentral gyrus, pars triangularis, pars opercularis, superior temporal gyrus, and planum temporale. We further demonstrate that these areas are sensitive to increasing demands on speech production in monolinguals. This suggests that the advantage of being bilingual comes at the expense of increased work in brain areas that support monolingual word processing. By comparing the effect of bilingualism across a range of tasks, we argue that activation is higher in bilinguals compared with monolinguals because word retrieval is more demanding; articulation of each word is less rehearsed; and speech output needs careful monitoring to avoid errors when competition for word selection occurs between, as well as within, language. |
| Databáze: | OpenAIRE |
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