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Surface Electrical Stimulation for Persistent Stuttering and Concomitant Orofacial Disorders: A Multiple Case Study.

Sandra Merlo1

  • 1Brazilian Fluency Institute, Sao Paulo, Brazil.

Perceptual and Motor Skills
|April 3, 2020
PubMed
Summary
This summary is machine-generated.

Transcutaneous electrical nerve stimulation (TENS) shows promise for improving speech fluency in individuals with persistent stuttering and orofacial disorders. This therapy reduced stuttering frequency and duration, suggesting potential for further investigation.

Keywords:
bruxismmouth breathingspeech fluencytranscutaneous electrical nerve stimulation

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Area of Science:

  • Neurology
  • Speech-Language Pathology
  • Biomedical Engineering

Background:

  • Persistent stuttering often co-occurs with orofacial disorders like bruxism and mouth breathing.
  • These co-occurring conditions may present unique challenges in speech fluency management.

Purpose of the Study:

  • To investigate the immediate effects of transcutaneous electrical nerve stimulation (TENS) on speech fluency.
  • To explore TENS as a potential adjunct therapy for individuals with stuttering and orofacial disorders.

Main Methods:

  • A multiple case study design involving 14 adolescents and adults with persistent stuttering and either bruxism or mouth breathing.
  • Low-frequency TENS was applied for 20 minutes to specific facial, neck, or shoulder electrode placements.
  • Speech fluency was assessed immediately before and after TENS application.

Main Results:

  • For participants with stuttering and bruxism, TENS applied to Areas A and B reduced stuttered syllable frequency by 27% and stuttering moment duration by 29%.
  • For participants with stuttering and mouth breathing, TENS applied to Areas C and D reduced stuttering moment duration by 28% and increased speech rate by 113%.
  • A single TENS session demonstrated immediate positive effects on speech fluency metrics.

Conclusions:

  • Transcutaneous electrical nerve stimulation (TENS) may offer immediate benefits for speech fluency in individuals with stuttering and co-occurring orofacial disorders.
  • Further research is warranted to explore the therapeutic potential of TENS for stuttering treatment.
  • TENS could potentially enhance the effectiveness of existing fluency shaping techniques.