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Updated: Jan 21, 2026

Transcranial Direct Current Stimulation tDCS of Wernicke's and Broca's Areas in Studies of Language Learning and Word Acquisition
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Functional plasticity associated with language learning in adults.

Kshipra Gurunandan1, Manuel Carreiras2, Pedro M Paz-Alonso1

  • 1BCBL, Basque Center on Cognition, Brain and Language, Donostia-San Sebastian, Spain.

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|July 24, 2019
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Summary
This summary is machine-generated.

Adults learning a new language show significant brain changes. Advanced learners exhibit greater functional connectivity in language areas compared to intermediate learners, especially during reading.

Keywords:
Adult plasticityFunctional MRILanguage proficiency

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Psycholinguistics

Background:

  • Adult language acquisition is a complex cognitive process.
  • Understanding neuroplasticity in adult learners is crucial for cognitive science.
  • Second language (L2) learning in adulthood offers insights into brain adaptability.

Purpose of the Study:

  • To characterize functional neuroplasticity in adults at different stages of second language (L2) learning.
  • To map neural differences using functional magnetic resonance imaging (fMRI).
  • To investigate the impact of L2 proficiency on brain function.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used on 34 intermediate and advanced L2 learners.
  • Participants performed a semantic judgment task with print and speech stimuli.
  • Analyses included print-speech convergence, L1-L2 similarity, and functional connectivity.

Main Results:

  • Print-speech convergence was not influenced by L2 proficiency.
  • First language (L1)-L2 similarity was higher in intermediate learners than advanced learners.
  • Advanced learners showed higher functional connectivity between language and control regions during reading.

Conclusions:

  • L2 proficiency significantly modulates functional brain organization in adults.
  • Increasing L2 proficiency alters the functional similarity between L1 and L2.
  • Connectivity patterns in language and control regions change with L2 advancement, particularly in reading.