Self-sustained oscillations of the vocal folds (VFs) during phonation are the result of the energy exchange between the airflow and VF tissue. Understanding this mechanism requires accurate investigation of the aerodynamic pressures acting on the VF surface during oscillation. A self-oscillating silicone VF model was used in a hemilaryngeal flow facility to measure the time-varying pressure distribution along the inferior-superior thickness of the VF and at four discrete locations in the anterior-posterior direction. It was found that the intraglottal pressures during the opening and closing phases of the glottis are highly dependent on three-dimensional and unsteady flow behaviors. The measured aerodynamic pressures and estimates of the medial surface velocity were used to compute the intraglottal energy transfer from the airflow to the VFs. The energy was greatest at the anterior-posterior midline and decreased significantly toward the anterior/posterior endpoints. The findings provide insight into the dynamics of the VF oscillation and potential causes of some VF disorders.

中文翻译：

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合成自振荡模型中的声带动力学：声门内气动压力和能量

发声期间声带 (VF) 的自我维持振荡是气流和 VF 组织之间能量交换的结果。了解这种机制需要准确研究振荡期间作用在 VF 表面上的空气动力压力。自振荡硅胶 VF 模型用于半喉流动设施，以测量沿 VF 上下厚度和前后方向四个离散位置的时变压力分布。研究发现，声门打开和关闭阶段的声门内压力高​​度依赖于三维和非稳态流动行为。测量的空气动力压力和内侧表面速度的估计值用于计算从气流到 VF 的声门内能量传递。能量在前后中线处最大，向前/后端点显着降低。这些发现提供了对 VF 振荡的动力学和一些 VF 疾病的潜在原因的深入了解。