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Related Experiment Video

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Examining Bilingual Language Control Using the Stroop Task
05:31

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Published on: February 26, 2020

Language conflict in the bilingual brain.

Walter J B van Heuven1, Herbert Schriefers, Ton Dijkstra

  • 1Nijmegen Institute for Cognition and Information, Radboud University Nijmegen, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands. wvh@psychology.nottingham.ac.uk

Cerebral Cortex (New York, N.Y. : 1991)
|April 22, 2008
PubMed
Summary

Bilingual brains experience language conflict automatically, even when only one language is needed. This occurs because words from both languages activate simultaneously, impacting phonological and semantic processing.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Psycholinguistics

Background:

  • Most humans are bilingual, raising questions about brain organization for language selection.
  • Understanding how the brain manages multiple languages is crucial for cognitive neuroscience.

Purpose of the Study:

  • To investigate language conflict in bilinguals during task performance.
  • To determine if language conflict is unavoidable in bilinguals.
  • To identify brain regions involved in stimulus-based and response-based language conflict.

Main Methods:

  • Behavioral experiments measuring task performance.
  • Functional magnetic resonance imaging (fMRI) to observe brain activity.
  • Analysis of brain regions associated with language processing and conflict.

Main Results:

  • Bilingual processing inevitably leads to language conflict, even when only the target language is required.
  • Automatic activation of words from both target and non-target languages occurs during reading.
  • Stimulus-based conflict was observed in the left inferior parietal cortex (LIPC), linked to phonological and semantic processing.
  • Response-based conflict was localized to the pre-supplementary motor area/anterior cingulate cortex.

Conclusions:

  • The bilingual brain cannot prevent language conflict due to automatic cross-linguistic activation.
  • Language conflict has distinct neural correlates depending on whether it is stimulus- or response-based.
  • Findings shed light on the neural mechanisms underlying language control and interference in bilingual individuals.