Neural basis of language switching in the brain: fMRI evidence from Korean-Chinese early bilinguals

Miaomei Lei*, Hiroyuki Akama, Brian Murphy

*Corresponding author for this work

Research output: Contribution to journalArticle

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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. 

Original languageEnglish
Pages (from-to)12-18
Number of pages7
JournalBrain and Language
Volume138
Early online date28 Sep 2014
DOIs
Publication statusPublished - Nov 2014

Keywords

  • Language switching
  • fMRI
  • Bilingualism
  • Cognitive model
  • GLM
  • Univariate Searchlight
  • HIGHLY PROFICIENT BILINGUALS
  • SPANISH-ENGLISH BILINGUALS
  • WORD PRODUCTION
  • ACTIVATION
  • INFORMATION
  • SPEECH
  • CORTEX
  • REPRESENTATION
  • STIMULATION
  • TRANSLATION

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