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Experimental simulation of unilateral paralysis of human vocal folds
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SYSNO ASEP 0495854 Document Type A - Abstract R&D Document Type O - Ostatní Title Experimental simulation of unilateral paralysis of human vocal folds Author(s) Radolf, Vojtěch (UT-L) RID, ORCID
Horáček, Jaromír (UT-L) RID, ORCID
Bula, Vítězslav (UT-L) RID
Košina, Jan (UT-L) RID
Švec, J. (CZ)Source Title Computational Mechanics 2018 - Book of extended abstracts. - Plzeň : University of West Bohemia, Plzeň, 2018 / Adámek V. ; Jonášová A. - ISBN 978-80-261-0819-1
S. 87-88Number of pages 2 s. Publication form Medium - C Action Computational Mechanics 2018 /34./ Event date 31.10.2018 - 02.11.2018 VEvent location Srní Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords videokymogram ; modelling of phonation ; biomechanics of voice Subject RIV BI - Acoustics OECD category Acoustics R&D Projects GA16-01246S GA ČR - Czech Science Foundation (CSF) Institutional support UT-L - RVO:61388998 Annotation Unilateral paralysis of the superior laryngeal nerve affecting the cricothyroid muscle produces an imbalance in the longitudinal tension of the vocal folds during phonation. Such an asymmetry causes changes in the vibratory pattern of the vocal folds and in the resulting voice quality. This problem was studied using the synthetic, three-layer, life-size vocal fold model joined to the simplified model of lungs and to the plexiglass model of the human vocal tract. Fluctuations of the subglottal (tracheal) and oral pressure were recorded synchronously with the signal from the high-speed camera to analyse vocal folds vibrations. The vibration pattern resembles pathological asymmetric vibration patterns observed in vivo in patients with unilateral vocal fold paralysis. The period irregularities on both the vocal folds are typical for rough or diplophonic voices. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2019
Number of the records: 1