Modifying Electroglottograph-Identified Intervals of Phonation The Effect on Stuttering Research Article
Research Article  |   June 01, 1992
Modifying Electroglottograph-Identified Intervals of Phonation
 
Author Affiliations & Notes
  • Merrilyn L. Gow
    University of California, Santa Barbara
  • Roger J. Ingham
    University of California, Santa Barbara
Article Information
Speech / Research Articles
Research Article   |   June 01, 1992
Modifying Electroglottograph-Identified Intervals of Phonation
Journal of Speech, Language, and Hearing Research, June 1992, Vol. 35, 495-511. doi:10.1044/jshr.3503.495
History: Received April 1, 1991 , Accepted August 9, 1991
 
Journal of Speech, Language, and Hearing Research, June 1992, Vol. 35, 495-511. doi:10.1044/jshr.3503.495
History: Received April 1, 1991; Accepted August 9, 1991

Single-subject experiments were conducted with an adolescent and an adult male who stutter to assess the effect on stuttering of changing the frequency of phonation intervals that were within prescribed duration ranges during spontaneous speech. Electroglottograph-identified intervals of phonation were measured using a computer-assisted biofeedback system. Both subjects demonstrated that their stuttering could be controlled by modifying the frequency of phonation intervals within short duration ranges. The experimental effects not only replicated earlier findings but were demonstrated to be independent of changes in speaking rate, or alterations to other intervals of phonation, and produced little disruption to speech naturalness. The theoretic implications of these findings are discussed.

Acknowledgments
Authorship of this paper is equal. Parts of this paper were originally presented to the Annual Convention of the American Speech-Language-Hearing Association, St. Louis, Missouri, November 16, 1989.
We gratefully acknowledge the assistance of Don Devan for the development of the computer software, Richard Moglia and Skip Royston for their technical assistance, and Patrick Finn and Can Saben, who served as the independent judges.
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