Meyer B, Candau P, Alcaras N, MacLeod P
Acta Otolaryngol. 1984 May-Jun;97(5-6):407-14. doi: 10.3109/00016488409132913.
The precise mechanism of vocal fold vibrations during phonation is not well known. At present it is impossible to say whether this movement is active or passive. Since the studies of MacLeod & Louis Sylvestre, we know that the vocal muscle is asynchronous and, so, can have a fast oscillatory movement induced by a continuous depolarization of the muscular fibre membranes. Thus, we believe at present that the glottic opening can be merely passive and that the closing can be both passive and active through a myogenic mechanism. The purpose of this work was to try to establish whether this concept is right, by recording simultaneously the aerodynamic forces acting upon the vocal folds and their acceleration during phonation. This acceleration represents the forces applied to the vocal folds as a function of time. By comparing the temporal evolution of the two forces we can assert that glottic opening is a passive movement. This protocol does not allow us to know if closure is due solely to the elastic retractive force, or also to a muscular, active force such as myogenic rhythm. To answer this question we must use another protocol.
发声时声带振动的确切机制尚不清楚。目前还无法确定这种运动是主动的还是被动的。自麦克劳德和路易斯·西尔维斯特雷的研究以来，我们知道声带肌是异步的，因此，肌肉纤维膜的持续去极化可诱导其产生快速振荡运动。因此，我们目前认为声门打开可能仅仅是被动的，而关闭可能通过肌源性机制既是被动的也是主动的。这项工作的目的是通过在发声过程中同时记录作用于声带的气动力及其加速度，试图确定这个概念是否正确。这种加速度表示作为时间函数施加于声带的力。通过比较这两种力的时间演变，我们可以断言声门打开是一种被动运动。该实验方案无法让我们知道关闭是否仅归因于弹性回缩力，还是也归因于肌肉主动力，如肌源性节律。要回答这个问题，我们必须使用另一种实验方案。
