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Related Experiment Videos

Right rolandic activation during speech perception in stutterers: a MEG study.

Katja Biermann-Ruben1, Riitta Salmelin, Alfons Schnitzler

  • 1Department of Neurology, MEG Laboratory, University of Duesseldorf, Germany. K.Biermann-Rueben@uni-duesseldorf.de

Neuroimage
|April 6, 2005
PubMed
Summary

Magnetoencephalography reveals distinct brain activity in stutterers during language tasks. Stutterers showed unique left inferior frontal and right rolandic area activation during speech perception compared to controls.

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Area of Science:

  • Neuroscience
  • Speech and Language Sciences
  • Cognitive Science

Background:

  • Stuttering is a complex speech disorder affecting language processing.
  • Previous research indicates altered brain activation in speech production areas in stutterers.
  • Understanding neuronal organization in stutterers during auditory language tasks is crucial.

Purpose of the Study:

  • To investigate the neuronal organization of language processing in individuals who stutter using magnetoencephalography (MEG).
  • To compare brain activity patterns between stutterers and controls during auditory language tasks.
  • To identify differences in brain activation during speech perception in stutterers.

Main Methods:

  • Magnetoencephalography (MEG) recorded neuronal activity in 10 male developmental stutterers and 10 male controls.

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  • Participants listened to pure tones, words for repetition, and sentences for repetition or transformation.
  • Analysis focused on brain activation patterns during different auditory stimuli.

    • Main Results:

    • Pure tone stimulation showed similar brain activation in both groups.
    • Complex auditory language tasks revealed differences, particularly in the left inferior frontal cortex activation in stutterers (95-145 ms after sentence onset).
    • Stutterers exhibited additional right rolandic area activation from 315 ms onwards, more pronounced in sentence tasks.

    Conclusions:

    • Neuronal activation in the left inferior frontal cortex and right rolandic areas during speech perception differs between stutterers and controls.
    • Findings suggest that areas typically associated with language production are also involved in speech perception for both groups.
    • The study provides insights into the neurophysiological underpinnings of language processing in stuttering.