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Effects of RLN and SLN stimulation on glottal area
Authors
Gerald S. Berke
Steven Bielamowicz
+3 more
Bruce R. Gerratt
Jody Kreiman
Deborah Watson
Publication date
1 January 1994
Publisher
Health Sciences Research Commons
Abstract
In vivo canine experiments have demonstrated that vocal fold stiffness varies proportionately with changing levels of recurrent laryngeal nerve (RLN) and superior laryngeal nerve (SLN) stimulation. This study evaluated the morphologic changes in the glottis at varying levels of nerve stimulation and the presumed effects on laryngeal air particle velocity. Stroboscopic data from the in vivo canine model of phonation were examined under varying conditions of RLN and SLN stimulation. Computerized analysis of stroboscopic Images was used to reconstruct the glottal area vs. time waveforms. As RLN stimulation increased, glottal area per cycle decreased (p \u3c 0.05). However, as SLN stimulation increased, glottal area per cycle increased (p \u3c 0.05). These results support the hypothesis that increasing RLN stimulation at similar levels of SLN stimulation produces an increase in air particle velocity, whereas an increase in SLN stimulation causes a decrease in air particle velocity. © 1994, Official journal of the American Academy of Otolaryngology–Head and Neck Surgery Foundation. All rights reserved
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Last time updated on 26/03/2021
George Washington University: Health Sciences Research Commons (HSRC)
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Last time updated on 03/12/2020