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 evaluates the morphologic changes in the glottis at varying levels of nerve stimulation and the effects on laryngeal resistance. Stroboscopic data from the invivo canine model were examined under varying conditions of RLN and SLN stimulation. Computerized analysis of stroboscopic images was used to reconstruct the glottic area versus time waveforms and the results will be presented. Glottal dynamics were measured using photoglottography, electroglottography, and the glottal area waveforms. The effects of varying RLN and SLN stimulation on laryngeal resistance will be discussed. [Work supported by an American Laryngologic Research Award.]
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