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Related Experiment Videos

Syllabic timing in dysarthria

W Ziegler1, E Hartmann, P Hoole

  • 1Clinical Neuropsychology Research Group, City Hospital Bogenhausen, Munich, Germany.

Journal of Speech and Hearing Research
|August 1, 1993
PubMed
Summary
This summary is machine-generated.

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This study reveals altered syllable timing in dysarthria patients, with consonant variations strengthening while vowel and stress effects diminish. These findings offer insights into neurological speech impairments.

Area of Science:

  • Neurolinguistics
  • Speech Science
  • Motor Control

Background:

  • Dysarthria, often resulting from traumatic or cerebrovascular events, significantly impacts speech production.
  • Accurate syllabic timing is crucial for intelligible speech, but its alterations in dysarthria are not fully understood.
  • Existing methods for measuring speech timing may not fully capture the nuances of dysarthric speech.

Purpose of the Study:

  • To investigate syllabic timing in individuals with dysarthria using a novel intensity-based measurement.
  • To examine the relationship between syllable duration, perceived speech rate, and dysarthric impairment severity.
  • To explore the influence of segmental factors and sentence stress on temporal variability in dysarthric speech.

Main Methods:

  • An intensity-based method was employed to measure syllable duration in 75 dysarthria patients and 30 controls.

Related Experiment Videos

  • Speech tasks involved repeating sentences with consonant-vowel chains.
  • Analysis focused on syllable duration, sentence accent effects, segmental influences, and between-sentence variability.

    • Main Results:

    • The logarithm of syllable duration, especially with sentence accent, strongly correlated with perceived speech rate.
    • Consonant-related temporal variation was amplified in dysarthric speakers compared to controls.
    • Intrinsic vowel duration effects and sentence stress influences on timing were reduced in dysarthric speech.

    Conclusions:

    • The findings suggest a distinct pattern of temporal disruption in dysarthria, characterized by altered consonant and stress-timing mechanisms.
    • These results provide a foundation for understanding and testing speech impairments in specific neurological populations.
    • The study contributes to theories of motor control, comparing speech timing deficits with limb motor control.