How much loading does cough pose on the vocal folds? Preliminary high speed image analysis comparing coughing and phonation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F21%3A00549843" target="_blank" >RIV/61388998:_____/21:00549843 - isvavai.cz</a>
Result on the web
<a href="https://fupress.com/catalogo/models-and-analysis-of-vocal-emissions-for-biomedical-applications/7364" target="_blank" >https://fupress.com/catalogo/models-and-analysis-of-vocal-emissions-for-biomedical-applications/7364</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.36253/978-88-5518-449-6" target="_blank" >10.36253/978-88-5518-449-6</a>

Result language
angličtina
Original language name
How much loading does cough pose on the vocal folds? Preliminary high speed image analysis comparing coughing and phonation
Original language description
Coughing offers a risk for voice problems by increasing vocal loading. This study estimates loading by measuring glottal area variation from high speed images and subglottic pressure from oral pressure Poral. Phonation on [o:] and coughing at the same Poral (6 Pa) and SPL (93 dB6cm) were compared from one healthy male. In coughing, the glottal width (GW) at the middle of vocal folds (VFs) was 25% larger. GW measured at VF processes was almost unchanged. Maximum glottal opening velocity dGW/dt was nearly 40% higher, maximum glottal declination rate (MWDR) was up to 3 times higher, and MWDR at vocal processes was 13% higher. The acceleration and deceleration values for VFs were 40% and 47% higher, respectively. Fo in the last part of coughing decreased from f0=222 Hz to 77 Hz at phonation offset. In [o:] f0 was 116 Hz. Closed quotient CQ≅0.50 in coughing was close to CQ=0.47 in vowel. Vibration frequency of the false vocal folds (FVFs) registered in the first, rough part of coughing, was 293 Hz. Peak-to-peak value of Poral increased 5.4 times in coughing. During vibration of FVFs in coughing, mean Poral increased from 6 Pa to 70 Pa and Poral p-t-p increased 2.45 times.
Czech name
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Czech description
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Project
<a href="/en/project/GA19-04477S" target="_blank" >GA19-04477S: Modelling and measurements of fluid-structure-acoustic interactions in biomechanics of human voice production</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Models and Analysis of Vocal Emissions for Biomedical Applications
ISBN
978-88-5518-448-9
ISSN
2704-601X
e-ISSN
2704-5846
Number of pages
4
Pages from-to
109-112
Publisher name
Firenze University Press
Place of publication
Firenze
Event location
Firenze
Event date
Dec 14, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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