As mentioned above, voice production at its final stage is a purely mechanical phenomenon, in which several parameters are involved. Cardinal among them are: (a) subglottal pressure; (b) initial or neutral glottal area, or glottal area at resting position AgO; (c) stiffness of the vocal cords; (d) coupling between the upper (cranial) and lower (caudal) portion of the vocal cord edge, which corresponds to the mobility of the vocal cord mucosa; (e) mass of the vocal cord in vibration, the upper and lower portion considered separately.
KeywordsVocal Cord Glottal Closure Normal Voice Mass Imbalance Voice Production
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3. Pathophysiology of Voice Production
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