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Influence of language structure on brain-behavior development

J S Buchwald1, D Guthrie, J Schwafel

  • 1Department of Physiology, UCLA School of Medicine.

Brain and Language
|May 1, 1994
PubMed
Summary
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Japanese adults show impaired ability to distinguish between the English /r/ and /l/ sounds due to language-based developmental effects. This impacts auditory processing and brain function related to speech sound discrimination.

Area of Science:

  • Neuroscience
  • Linguistics
  • Developmental Psychology

Background:

  • Early sensory exposure shapes adult brain function.
  • Language-specific sound inventories can influence auditory perception development.

Purpose of the Study:

  • To investigate the impact of Japanese language structure on the discrimination of English /r/ and /l/ sounds.
  • To compare auditory processing abilities in Japanese and English native speakers.

Main Methods:

  • Utilized electrophysiological measures, specifically the P3 event-related evoked potential.
  • Employed behavioral tasks to assess sound discrimination accuracy.
  • Compared Japanese native speakers with English native speakers.

Main Results:

Related Experiment Videos

  • Japanese adults demonstrated deficient or absent discrimination of /r/ versus /l/ sounds.
  • English native speakers exhibited robust discrimination of these sounds.
  • Electrophysiological and behavioral data converged on impaired /r/-/l/ distinction in Japanese speakers.

Conclusions:

  • Language structure significantly influences auditory brain development.
  • Lack of exposure to specific phonemic contrasts during critical developmental periods leads to lasting perceptual deficits.
  • Native language shapes the neural processing of speech sounds.