The effect of cricothyroid muscle action on the relation between subglottal pressure and fundamental frequency in an in vivo canine model
The effect of cricothyroid muscle action on the relation between subglottal pressure and fundamental frequency in an in vivo canine model
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DOI：
10.1016/s0892-1997(01)00020-0
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发表时间：
2001-06-01
期刊：
影响因子：
2.2
通讯作者：
Titze, IR
中科院分区：
文献类型：
--
作者：
Hsiao, TY;Liu, CM;Titze, IR
The relation between subglottal pressure (P-s) and fundamental frequency (F-0) in phonation was investigated with an in vivo canine model. Direct muscle stimulation was used in addition to brain stimulation. This allowed the P-s-F-0 slope to be quantified in terms of cricothyroid muscle activity. Results showed that, for ranges of 0-2 mA constant current stimulation of the cricothyroid muscle, the P-s-F-0 slope ranged from 10 Hz/kPa to 60 Hz/kPa. These results were compared to similar slopes obtained in a previous study on excised larynges in which the vocal fold length was varied instead of cricothyroid activation. A physical interpretation of the P-s-F-0 slope is that the amplitude-to-length ratio of the vocal folds decreases with CT activity, resulting in a smaller time-varying stiffness. In other words, there is less dependence of F-0 on amplitude of vibration when the vocal folds are long instead of short.
