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Related Experiment Videos

Durational changes of apraxic speakers.

L L Skenes

    Journal of Communication Disorders
    |February 1, 1987
    PubMed
    Summary

    Apraxic speakers exhibit longer speech segment durations than normal speakers. Unlike normal speakers, apraxic individuals did not alter their speaking rate when attempting to speak faster.

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    Area of Science:

    • Speech-language pathology
    • Linguistics
    • Phonetics

    Background:

    • Speech production relies on precise temporal control.
    • Apraxia of speech is a motor speech disorder affecting speech planning and programming.
    • Understanding temporal differences in apraxic speech is crucial for diagnosis and therapy.

    Purpose of the Study:

    • To compare speech segment durations between individuals with apraxia of speech and normal speakers.
    • To investigate the impact of speaking rate on temporal aspects of speech in both groups.
    • To examine the effects of syllabic stress on speech timing in apraxic and non-apraxic speakers.

    Main Methods:

    • Acoustic analysis of speech recordings from apraxic and normal speakers.
    • Measurement of phrase, word, and phone durations.
    • Utilizing carrier phrases with target words ('permit', 'perpit') under normal and fast speaking conditions.
    • Analysis of oscillograms to determine precise segment durations.

    Main Results:

    • Apraxic speakers demonstrated significantly longer absolute segment durations compared to normal speakers.
    • Normal speakers reduced word durations when attempting a faster speaking rate.
    • Apraxic speakers did not show significant changes in speaking rate between normal and fast conditions.

    Conclusions:

    • Apraxic speakers exhibit distinct temporal characteristics in their speech, including prolonged segment durations.
    • Individuals with apraxia of speech may have impaired ability to adjust speaking rate effectively.
    • Further research into temporal control mechanisms in apraxia of speech is warranted.

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