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Laryngeal behavior during stuttering: a further study.

E G Conture, H D Schwartz, D W Brewer

    Journal of Speech and Hearing Research
    |June 1, 1985
    PubMed
    Summary
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    Stuttering involves specific vocal fold behaviors. During prolongations, vocal folds are often adducted, unlike in repetitions, suggesting complex laryngeal, articulatory, and respiratory system interactions.

    Area of Science:

    • Speech-language pathology
    • Laryngology
    • Acoustic phonetics

    Background:

    • Stuttering is a complex speech disorder.
    • Understanding the laryngeal mechanisms during stuttering is crucial for effective treatment.

    Purpose of the Study:

    • To objectively describe laryngeal behavior during stuttering events in adult stutterers.
    • To analyze vocal fold kinematics during different types of stuttered disfluencies.

    Main Methods:

    • Utilized flexible fiber-optic nasolaryngoscopy to observe 11 adult stutterers.
    • Categorized laryngeal behaviors during 86 stuttering instances (sound prolongations, sound/syllable repetitions).
    • Analyzed vocal fold adduction/abduction and movement variability.

    Main Results:

    Related Experiment Videos

    • Sound prolongations showed more adducted and less variable vocal fold movements compared to sound/syllable repetitions.
    • Laryngeal behavior was influenced by the voicing of the stuttered sound and the type of disfluency.
    • A complex interplay between laryngeal, articulatory, and respiratory systems is hypothesized.

    Conclusions:

    • Laryngeal behavior during stuttering is diverse and depends on the specific disfluency type and phonetic context.
    • Inappropriate laryngeal abductory/adductory behaviors are central to stuttered speech segments.
    • Further research into system interactions is warranted to understand stuttering etiology.