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Related Experiment Video

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Stuttering treatment control using P300 event-related potentials.

Fernanda Chiarion Sassi1, Carla Gentile Matas, Lucia Iracema Zanotto de Mendonça

  • 1Department of Physiotherapy, Speech-Language and Hearing Sciences and Occupational Therapy, School of Medicine, University of São Paulo, Brazil.

Journal of Fluency Disorders
|June 14, 2011
PubMed
Summary

Behavioral fluency treatment significantly reduced stuttering severity. P300 event-related potentials showed normal brain activity in stuttering adults, with subtle latency changes post-treatment, suggesting improved auditory processing.

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Area of Science:

  • Neuroscience
  • Speech-Language Pathology

Background:

  • Previous PET studies show reduced auditory cortical activation in stuttering individuals.
  • P300 event-related potentials offer a method to assess brain responses in stuttering.

Purpose of the Study:

  • Investigate the impact of behavioral treatment on P300 signal amplitude and latency in stuttering adults.
  • Compare P300 measures between stutterers and a matched control group before and after treatment.

Main Methods:

  • Utilized P300 event-related potentials to measure brain activity.
  • Included a control group matched for age and gender.
  • Administered a behavioral fluency treatment program to stutterers.

Main Results:

  • Stuttering severity significantly decreased after the fluency treatment program.
  • No significant statistical variations in P300 measurements were found between stutterers and controls, or pre- and post-treatment.
  • Stutterers showed a greater average decrease in right-ear wave latency post-treatment.

Conclusions:

  • Behavioral fluency treatment is effective in reducing stuttering severity.
  • P300 measurements indicate normal cerebral activity in stuttering adults, with potential subtle improvements in auditory processing post-treatment.