Pressure, flow, and glottal behaviour comparison between the acapella choice device and silicone tube phonation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61384984%3A51110%2F22%3AN0000111" target="_blank" >RIV/61384984:51110/22:N0000111 - 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

Pressure, flow, and glottal behaviour comparison between the acapella choice device and silicone tube phonation

Popis výsledku v původním jazyce

Vibratory positive expiratory pressure (PEP) devices have recently been incorporated as a resource for voice therapy. They resemble silicone tube phonation (STP) in the sense that both involve lengthening of the vocal tract with an additional source of vibration in the vocal tract. PEP devices produce a strong modulation in intraoral pressure and flow values affecting the vocal fold vibration pattern. However, details about the behaviour of STP with regards to its impact on the voice via changes in the pressure and flow profiles in the vocal tract are yet to be investigated. This study compares the impact of phonation into the Acapella Choice (a type of PEP device) and STP on the voice. Three normophonic subjects underwent high-speed videoendoscopy assessment while pressure, flow and electroglottographic data was collected. For STP, water depths between 2 and 12 cm were used. The data was analysed with emphasis on the low frequency oscillation component (produced by the water bubbles or flapping mechanism of the PEP device) and the high frequency component produced by the vocal folds. Phonation into the Acapella device generates large changes in the pressure and flow profiles producing systematic changes in the impedance of the vocal tract. This, in turn, systematically modulates the vibration of the vocal folds producing moments when vibration is aided and hindered. A similar behaviour is seen during STP, however due to the lower changes in intraoral pressure and irregular releasing of the bubbles into the water, the impact on the vocal folds is less pronounced and more unpredictable. PEP devices are more efficient in modulating the pressure and flow profiles in the vocal tract than STP. The large modulation in the vocal fold vibration pattern produced by the PEP device may be considered an important component of therapy (in specific, the massage effect) which should be taken into consideration when designing specific treatments for voice disorders.

Název v anglickém jazyce

Pressure, flow, and glottal behaviour comparison between the acapella choice device and silicone tube phonation

Popis výsledku anglicky

Vibratory positive expiratory pressure (PEP) devices have recently been incorporated as a resource for voice therapy. They resemble silicone tube phonation (STP) in the sense that both involve lengthening of the vocal tract with an additional source of vibration in the vocal tract. PEP devices produce a strong modulation in intraoral pressure and flow values affecting the vocal fold vibration pattern. However, details about the behaviour of STP with regards to its impact on the voice via changes in the pressure and flow profiles in the vocal tract are yet to be investigated. This study compares the impact of phonation into the Acapella Choice (a type of PEP device) and STP on the voice. Three normophonic subjects underwent high-speed videoendoscopy assessment while pressure, flow and electroglottographic data was collected. For STP, water depths between 2 and 12 cm were used. The data was analysed with emphasis on the low frequency oscillation component (produced by the water bubbles or flapping mechanism of the PEP device) and the high frequency component produced by the vocal folds. Phonation into the Acapella device generates large changes in the pressure and flow profiles producing systematic changes in the impedance of the vocal tract. This, in turn, systematically modulates the vibration of the vocal folds producing moments when vibration is aided and hindered. A similar behaviour is seen during STP, however due to the lower changes in intraoral pressure and irregular releasing of the bubbles into the water, the impact on the vocal folds is less pronounced and more unpredictable. PEP devices are more efficient in modulating the pressure and flow profiles in the vocal tract than STP. The large modulation in the vocal fold vibration pattern produced by the PEP device may be considered an important component of therapy (in specific, the massage effect) which should be taken into consideration when designing specific treatments for voice disorders.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

30305 - Occupational health

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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