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Language is a unique communication system that uses words and systematic rules to organize and transmit information. Unlike other forms of communication, which may involve postures, movements, odors, or vocalizations, language relies on symbols and grammar. This makes human communication distinct from that of other species, who also communicate but do not use language in the same way humans do.
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Related Experiment Video

Updated: Jan 22, 2026

Examining Bilingual Language Control Using the Stroop Task
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Proactive and Reactive Language Control in the Bilingual Brain.

Roy Seo1,2, Chantel S Prat3,4

  • 1Department of Psychology, University of Washington, 119A Guthrie Hall, UW Box 351525, Seattle, WA 98195, USA. royseo@uw.edu.

Brain Sciences
|July 13, 2019
PubMed
Summary
This summary is machine-generated.

Bilinguals use language control mechanisms differently. Brain regions like the left dorsolateral prefrontal cortex (DLPFC) show distinct activation patterns based on language cues, influencing proactive and reactive control strategies.

Keywords:
anterior cingulate cortexbasal gangliabilingual language controlcognitive controldorsolateral prefrontal cortexproactive controlreactive control

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Psycholinguistics

Background:

  • Bilingual language control is often explained by the dual mechanisms framework.
  • Understanding how bilinguals manage multiple languages involves examining proactive and reactive control strategies.

Purpose of the Study:

  • To investigate neural mechanisms of proactive and reactive language control in bilinguals using fMRI.
  • To explore how target language cues influence brain activation patterns during morphosyntactic rule production.

Main Methods:

  • fMRI study with 17 early Spanish-English bilinguals.
  • Manipulation of target language cues during a morphosyntactic rule production task.
  • Analysis of activation in nine regions of interest (ROIs).

Main Results:

  • A significant cue by phase interaction was found in the left dorsolateral prefrontal cortex (DLPFC) and pre-supplementary motor area (Pre-SMA).
  • These regions showed increased activity during cue phases and decreased activity during execution phases when cues were present.
  • Individual differences in basal ganglia activation correlated with proactive control in other ROIs, while anterior cingulate activation correlated with reactive control.

Conclusions:

  • The findings support the dual mechanisms framework for bilingual language control.
  • Bilinguals exhibit varying degrees of reliance on cues for proactive language preparation.
  • Neural mechanisms underlying proactive and reactive control differ and are influenced by cue availability.