Glottal opening and closing events investigated by electroglottography and super-high-speed video recordings

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33148837" target="_blank" >RIV/61989592:15310/14:33148837 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1242/jeb.093203" target="_blank" >http://dx.doi.org/10.1242/jeb.093203</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1242/jeb.093203" target="_blank" >10.1242/jeb.093203</a>

Result language
angličtina
Original language name
Glottal opening and closing events investigated by electroglottography and super-high-speed video recordings
Original language description
Previous research has suggested that the peaks in the first derivative (dEGG) of the electroglottographic (EGG) signal are good approximate indicators of the events of glottal opening and closing. These findings were based on high-speed video (HSV) recordings with frame rates 10 times lower than the sampling frequencies of the corresponding EGG data. The present study attempts to corroborate these previous findings, utilizing super-HSV recordings. The HSV and EGG recordings (sampled at 27 and 44!kHz, respectively) of an excised canine larynx phonation were synchronized by an external TTL signal to within 0.037!ms. Data were analyzed by means of glottovibrograms, digital kymograms, the glottal area waveform andthe vocal fold contact length (VFCL), a newparameter representing the time-varying degree of 'zippering' closure along the anterior-posterior (A-P) glottal axis. The temporal offsets betweenglottal events (depicted in the HSV recordings) and dEGG peaks in the opening and closing
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BO - Biophysics
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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