Influence of visual information on the intelligibility of dysarthric speech

Connie K. Keintz, Kate Bunton, Jeannette D. Hoit

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


Purpose: To examine the influence of visual information on speech intelligibility for a group of speakers with dysarthria associated with Parkinson's disease. Method: Eight speakers with Parkinson's disease and dysarthria were recorded while they read sentences. Speakers performed a concurrent manual task to facilitate typical speech production. Twenty listeners (10 experienced and 10 inexperienced) transcribed sentences while watching and listening to videotapes of the speakers (auditory-visual mode) and while only listening to the speakers (auditory-only mode). Results: Significant main effects were found for both presentation mode and speaker. Auditory-visual scores were significantly higher than auditory-only scores for the 3 speakers with the lowest intelligibility scores. No significant difference was found between the 2 listener groups. Conclusions: The findings suggest that clinicians should consider both auditory-visual and auditory-only intelligibility measures in speakers with Parkinson's disease to determine the most effective strategies aimed at evaluation and treatment of speech intelligibility decrements.

Original languageEnglish (US)
Pages (from-to)222-234
Number of pages13
JournalAmerican journal of speech-language pathology
Issue number3
StatePublished - Aug 2007


  • Auditory-visual cues
  • Listener experience
  • Parkinson's disease
  • Speech perception

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Developmental and Educational Psychology
  • Linguistics and Language
  • Speech and Hearing


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