Collision Pressure and Dissipated Power Dose in a Self-Oscillating Silicone Vocal Fold Model with a Posterior Glottal Opening

Autor/inn/en	Motie-Shirazi, Mohsen; Zañartu, Matías; Peterson, Sean D.; Mehta, Daryush D.; Hillman, Robert E.; Erath, Byron D.
Titel	Collision Pressure and Dissipated Power Dose in a Self-Oscillating Silicone Vocal Fold Model with a Posterior Glottal Opening
Quelle	In: Journal of Speech, Language, and Hearing Research, 65 (2022) 8, S.2829-2845 (17 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Motie-Shirazi, Mohsen) ORCID (Zañartu, Matías) ORCID (Peterson, Sean D.) ORCID (Mehta, Daryush D.) ORCID (Hillman, Robert E.) ORCID (Erath, Byron D.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Acoustics; Voice Disorders; Audio Equipment; Human Body; Risk; Physical Disabilities; Speech Impairments; Pathology; Physiology; Prediction; Injuries; Patients; Behavior Patterns + Suchen Sie Ihr Suchwort? Akustik; Stimmstörung; Audio-CD; Menschlicher Körper; Risiko; Physical handicap; Körperbehinderung; Speech impairment; Speech handicap; Speech handicaps; Language handicps; Language impairments; Sprachbehinderung; Pathologie; Physiologie; Vorhersage; Patient
Abstract	Purpose: The goal of this study was to experimentally evaluate how compensating for the adverse acoustic effects of a posterior glottal opening (PGO) by increasing subglottal pressure and changing supraglottal compression, as have been associated with vocal hyperfunction, influences the risk of vocal fold (VF) trauma. Method: A self-oscillating synthetic silicone model of the VFs with an airflow bypass that modeled a PGO was investigated in a hemilaryngeal flow facility. The influence of compensatory mechanisms on collision pressure and dissipated collision power was investigated for different PGO areas and supraglottal compression. Compensatory behaviors were mimicked by increasing the subglottal pressure to achieve a target sound pressure level (SPL). Results: Increasing the subglottal pressure to compensate for decreased SPL due to a PGO produced higher values for both collision pressure and dissipated collision power. Whereas a 10-mm[superscript 2] PGO area produced a 12% increase in the peak collision pressure, the dissipated collision power increased by 122%, mainly due to an increase in the magnitude of the collision velocity. This suggests that the value of peak collision pressure may not fully capture the mechanisms by which phonotrauma occurs. It was also found that an optimal value of supraglottal compression exists that maximizes the radiated SPL, indicating the potential utility of supraglottal compression as a compensatory mechanism. Conclusions: Larger PGO areas are expected to increase the risk of phonotrauma due to the concomitant increase in dissipated collision power associated with maintaining SPL. Furthermore, the risk of VF damage may not be fully characterized by only the peak collision pressure. (As Provided).
Anmerkungen	American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01