title: Neural basis of language switching in the brain: fMRI evidence from Korean-Chinese early bilinguals.
abstract: Using fMRI, we conducted two types of property generation task that involved language switching, with early bilingual speakers of Korean and Chinese. The first is a more conventional task in which a single language (L1 or L2) was used within each trial, but switched randomly from trial to trial. The other consists of a novel experimental design where language switching happens within each trial, alternating in the direction of the L1/L2 translation required. Our findings support a recently introduced cognitive model, the 'hodological' view of language switching proposed by Moritz-Gasser and Duffau. The nodes of a distributed neural network that this model proposes are consistent with the informative regions that we extracted in this study, using both GLM methods and Multivariate Pattern Analyses: the supplementary motor area, caudate, supramarginal gyrus and fusiform gyrus and other cortical areas.
authors.affiliation: Graduate School of DST, Tokyo Institute of Technology, Tokyo 152-8552, Japan. Electronic address: lei.m.aa@m.titech.ac.jp.
authors.forename: Miaomei
authors.initials: M
authors.lastname: Lei
authors.affiliation: Graduate School of DST, Tokyo Institute of Technology, Tokyo 152-8552, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Akama
authors.affiliation: Knowledge & Data Engineering, EEECS, Queen's University Belfast, BT9 5BN Belfast, Northern Ireland, United Kingdom; Machine Learning Department, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Murphy
mesh_terms: D000328:Adult; D001921:Brain / Q000502:physiology*; D001931:Brain Mapping; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D019303:Multilingualism; D055815:Young Adult
keywords: Bilingualism; Cognitive model; GLM; Language switching; Univariate Searchlight; fMRI