The effects of rehydration on phonation in excised canine larynges
The effects of rehydration on phonation in excised canine larynges
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DOI：
10.1016/s0892-1997(99)80061-7
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发表时间：
1999-03-01
期刊：
影响因子：
2.2
通讯作者：
Hanson, D
中科院分区：
文献类型：
--
作者：
Jiang, J;Ng, J;Hanson, D
本文采用切除喉部的方法，研究喉部脱水后发声效率的恢复。切除的喉部用温暖干燥的空气脱水，使气流通过近似的声带不会夹带褶皱产生发声。然后将脱水的声带浸泡在生理盐水中。然后将复水喉部重新安装在台式设备上，使其能够在恒定的加湿气流下发声，并测量发声阈值压力、声门气流和振幅。水合作用显著提高了效率，降低了发声阈压。研究结果证实了临床印象，水合作用是关键的生理正常发声。
Experiments using excised canine larynges were conducted to study the restoration of vocal efficiency in dehydrated larynges. Excised larynges were dehydrated with warm, dry air to the point that airflow through the approximated vocal folds would not entrain the folds to produce phonation. The dehydrated vocal folds were then bathed in a saline solution. The rehydrated larynges were then remounted on the bench apparatus that enabled phonation with a constant humidified airflow, and measurements were made of phonation threshold pressure, glottal airflow, and amplitude. Hydration resulted in significantly increased efficiency and decrease in phonation threshold pressure. The findings confirm clinical impressions that hydration is critical in the physiology of normal phonation.