An MEG study of the spatiotemporal dynamics of bilingual verb generation
| Autor: | Elizabeth Pang, Matt J. MacDonald |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Male
Multilingualism Article Verb generation Young Adult Cortex (anatomy) Surveys and Questionnaires medicine Image Processing Computer-Assisted Humans Cortical Synchronization Molecular Biology Neuroscience of multilingualism Language Language representation medicine.diagnostic_test General Neuroscience Magnetoencephalography Magnetic Resonance Imaging Temporal Lobe Semantics medicine.anatomical_structure Dynamics (music) Temporal resolution Data Interpretation Statistical Female Neurology (clinical) Occipital Lobe Psychology Insula Photic Stimulation Psychomotor Performance Developmental Biology Cognitive psychology |
| Popis: | Studies of first (L1) and second (L2) language representation in the brain have not identified the timing and locations of neural regions involved in L1 and L2 processing. Magnetoencephalography offers high spatial and temporal resolution and can be employed to disentangle subtle timing and neural control differences between L1 and L2 use. We tested bilingual adults in the MEG as they completed a picture verb generation task in L1 and L2. We found the expected progression of activation from occipital to temporal to inferior frontal areas. We also observed the following differences. A sustained insula and early cingulate event-related desynchrony was observed only with L2; the fMRI literature suggests that the former reflects an activation, and the latter an inhibition, sub-process for language selection. L2 processes exhibited a lag and were bilateral compared to L1 processes. Finally, L1 and L2 activated adjacent language control in dorsolateral pre-frontal cortex. |
| Databáze: | OpenAIRE |
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