喉頭の潤滑作用に関する基礎的研究

概要

論文の詳細を見る
Nobody can deny that lubrication is one of the factors which influence the phonetic function of the larynx. However, no notable studies on the mechanism of lubrication have ever been carried out. This study is an effort to clarify how the larynx is lubricated.<BR>The first experiments have been carried out in order to observe the mode of the secretive flow the tracheal and subglottic spaces. As the results of the experiments, the secretive fluid on the trachea traveled toward the vocal folds without phonation. And then, at the instance of phonation, the secretive fluid left immediately the subglottic area and appeared in the slit of the vocal folds.<BR>The second, the mode of secretive flow was experimentally examined on the vocal folds during phonation. The second experiments indicated that the secretive fluid on the surface of vocal folds was rotating perpendicularilly to the free edge of the folds.<BR>The third experiments of the amount of secretive fluid and its quality were also performed. Phonodynamic examinations including subglottic pressure and sound intensity were carried out in addition to acoustical analysis of the sounds. Results obtained in these experiments were discussed and analyzed from the viewpoint of phonodynamics.
耳鼻と臨床会の論文