Experimental simulation of unilateral paralysis of human vocal folds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00495854" target="_blank" >RIV/61388998:_____/18:00495854 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental simulation of unilateral paralysis of human vocal folds

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Experimental simulation of unilateral paralysis of human vocal folds

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10307 - Acoustics

Projekt

<a href="/cs/project/GA16-01246S" target="_blank" >GA16-01246S: Počítačové a experimentální modelování samobuzených kmitů hlasivek a vliv jejich poškození na lidský hlas</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů