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Related Experiment Videos

Vocal fold bulging effects on phonation using a biophysical computer model.

F Alipour1, R C Scherer

  • 1Department of Speech Pathology and Audiology, University of lowa, lowa City 52242-1012, USA. alipour@shc.uiowa.edu

Journal of Voice : Official Journal of the Voice Foundation
|December 29, 2000
PubMed
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Vocal fold bulging significantly impacts voice production by altering glottal flow resistance and volume velocity. This computational study offers insights into laryngeal hyperfunction and vocal fold dynamics.

Area of Science:

  • Laryngeal physiology
  • Acoustic phonetics
  • Computational modeling

Background:

  • Glottal adduction is crucial for vocal fold configuration and voice production.
  • Vocal fold adduction can be achieved through vocal process narrowing or medial surface bulging.
  • Understanding the biomechanics of vocal fold bulging is essential for voice disorders.

Purpose of the Study:

  • To investigate the phonatory effects of varying vocal fold bulging using a computational model.
  • To quantify the impact of bulging on key glottal parameters.

Main Methods:

  • A computational model was developed to simulate vocal fold bulging.
  • Bulging was mathematically represented as a quadratic surface.
  • The model related bulging to active muscle stress.

Related Experiment Videos

Main Results:

  • Vocal fold bulging significantly influenced glottal flow resistance.
  • Bulging affected maximum glottal width and area.
  • Mean glottal volume velocity was significantly altered by bulging.

Conclusions:

  • Vocal fold bulging is a significant factor in phonatory output.
  • The findings have implications for understanding and treating laryngeal hyperfunction.
  • Computational models can effectively simulate vocal fold biomechanics.