Nakagawa H, Fukuda H, Kawaida M, Shiotani A, Kanzaki J
Department of Otolaryngology, School of Medicine, Keio University, Tokyo, Japan.
Folia Phoniatr Logop. 1998;50(4):183-94. doi: 10.1159/000021460.
To evaluate how the viscosity of the laryngeal mucus influences vocal fold vibration, two fluids of differing viscosity were applied separately to excised canine larynges and experimental phonation was induced. Vibration of the vocal folds was measured by use of a laryngostroboscope and an X-ray stroboscope. With the high viscosity fluid, the amplitude of vibration of the free edge and the peak glottal area was decreased while the open quotient was increased. Because the viscosity of this fluid affected the wave motion of the vocal fold mucosa, changes in viscosity of the mucus may be involved in causing such disorders as hoarseness, in the absence of apparent changes in the vocal folds themselves.
为了评估喉黏液的黏度如何影响声带振动，将两种不同黏度的液体分别应用于切除的犬喉，并诱导进行实验性发声。使用喉动态镜和X射线动态镜测量声带的振动。使用高黏度液体时，游离缘的振动幅度和声门峰值面积减小，而开放商增加。由于这种液体的黏度影响了声带黏膜的波动，在声带本身无明显变化的情况下，黏液黏度的改变可能与诸如声音嘶哑等疾病的发生有关。
