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Inducing speech errors in dysarthria using tongue twisters.

Heather Kember1,2, Kathryn Connaghan2, Rupal Patel2,3

  • 1The MARCS Institute for Brain, Behaviour and Development, Western Sydney University, Australia.

International Journal of Language & Communication Disorders
|November 29, 2016
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Tongue twisters reveal that adults with dysarthria make more speech errors than healthy individuals. Prosodic prominence reduces errors for both groups, suggesting its use in speech therapy for dysarthria.

Keywords:
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Area of Science:

  • Speech-Language Pathology
  • Neurology
  • Linguistics

Background:

  • Tongue twisters are common tools for studying speech production in healthy individuals.
  • Limited research has explored their use in individuals with speech impairments, such as dysarthria.

Purpose of the Study:

  • To compare tongue twister errors between adults with dysarthria and healthy controls.
  • To investigate the impact of prosodic prominence on speech error production in dysarthria.

Main Methods:

  • Audio recordings of eight adults with spastic dysarthria and eight healthy controls producing tongue twisters.
  • Analysis of speech errors, speaking rate, and the effect of marked word prominence.
  • Comparison of error patterns across word positions within utterances.

Main Results:

  • Speakers with dysarthria produced significantly more speech errors and spoke slower than controls.
  • Prosodic prominence significantly reduced error rates for both groups.
  • Dysarthria speakers showed high error rates on initial and final words, in addition to medial words.

Conclusions:

  • The tongue twister paradigm is a promising tool for assessing speech production in dysarthria.
  • Prosodic strategies may be beneficial for improving speech intelligibility in individuals with dysarthria.