Abstract：
: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.
journal_name
Brain Resjournal_title
Brain researchauthors
Pang EW,MacDonald MJdoi
10.1016/j.brainres.2012.05.054subject
Has Abstractpub_date
2012-07-27 00:00:00pages
56-66eissn
0006-8993issn
1872-6240pii
S0006-8993(12)00987-0journal_volume
1467pub_type
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