A meta-analysis of hemodynamic studies on first and second language processing: Which suggested differences can we trust and what do they mean?
This article presents the results of a meta-analysis of
30 hemodynamic experiments comparing first language
(L1) and second language (L2) processing in a range of
tasks. The results suggest that reliably stronger activation
during L2 processing is found (a) only for task-specific
subgroups of L2 speakers and (b) within some, but not all
regions that are also typically activated in native language
processing. A tentative interpretation based on the functional
roles of frontal and temporal regions is suggested.
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