title: Phonation threshold pressure and onset frequency in a two-layer physical model of the vocal folds.
abstract: The influence of vocal fold geometry and stiffness on phonation onset was experimentally investigated using a body-cover physical model of the vocal folds. Results showed that a lower phonation threshold pressure and phonation onset frequency can be achieved by reducing body-layer or cover-layer stiffness, reducing medial surface thickness, or increasing cover-layer depth. Increasing body-layer stiffness also restricted vocal fold motion to the cover layer and reduced prephonatory glottal opening. Excitation of anterior-posterior modes was also observed, particularly for large values of the body-cover stiffness ratio. The results of this study were also discussed in relation to previous theoretical and experimental studies.
authors.affiliation: University of California Los Angeles School of Medicine, 31-24 Rehabilitation Center, 1000 Veteran Avenue, Los Angeles, California 90095-1794, USA.
authors.forename: Abie H
authors.initials: AH
authors.lastname: Mendelsohn
authors.forename: Zhaoyan
authors.initials: Z
authors.lastname: Zhang
mesh_terms: D001696:Biomechanical Phenomena; D055119:Elastic Modulus; D006801:Humans; D008953:Models, Anatomic; D009991:Oscillometry; D010699:Phonation; D011312:Pressure; D014827:Vocal Cords / Q000033:anatomy & histology* / Q000502:physiology*
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