Glottal Imaging Study Comparing Vowel Phonation with Semioccluded Vocal Tract Exercises (SOVTEs) Produced Loudly.
Autor: | Laukkanen AM; Speech and Voice Research Laboratory, Tampere University, Tampere, Finland. Electronic address: Anne-Maria.Laukkanen@tuni.fi., Radolf V; Institute of Thermomechanics of the Czech Academy of Sciences, Prague, Czech Republic., Bula V; Institute of Thermomechanics of the Czech Academy of Sciences, Prague, Czech Republic., Horáček J; Institute of Thermomechanics of the Czech Academy of Sciences, Prague, Czech Republic., Geneid A; Department of Otolaryngology and Phoniatrics-Head and Neck Surgery, Helsinki University Hospital and University of Helsinki, Helsinki, Finland. |
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Jazyk: | angličtina |
Zdroj: | Journal of voice : official journal of the Voice Foundation [J Voice] 2024 Jul 12. Date of Electronic Publication: 2024 Jul 12. |
DOI: | 10.1016/j.jvoice.2024.06.019 |
Abstrakt: | Objectives: This study aimed to estimate vocal loading in loud phonation of a vowel and two widely used semiocclusion voice exercises (SOVTEs). Impact stress (IS) was estimated from glottal closing speed, inertial forces from the second derivative of glottal opening and closing. Study Design: Experimental study in vivo. Methods: A vocally healthy male sustained the [o:] vowel with habitual loudness and loudly: (1) without a tube, (2) into a silicone "Lax Vox" type tube (35 cm in length, 10 mm in diameter) outer end submerged 10 cm in water, and (3) into a straw (length 12.6 cm, diameter 2.5 mm) the outer end in air. He tried to use equal effort in all loud samples. High-speed video-laryngo-endoscopy was performed with a rigid scope. Oral air pressure (P Results: Compared with vowel phonation at habitual loudness, mean of maximal glottal width (max GW) increased by 44.1% for loud tube phonation and decreased by 1.8% for loud straw phonation, and mean absolute value of minimum GW time derivative d Conclusions: IS, deduced from d Competing Interests: Declaration of Competing Interest The authors have no interest to declare. (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.) |
Databáze: | MEDLINE |
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