Influence of asymmetric stiffness on the structural and aerodynamic response of synthetic vocal fold models.
Influence of asymmetric stiffness on the structural and aerodynamic response of synthetic vocal fold models.
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DOI：
10.1016/j.jbiomech.2009.06.039
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发表时间：
2009-10-16
影响因子：
2.4
通讯作者：
Thomson, S. L.
中科院分区：
文献类型：
--
作者：
Pickup, B. A.;Thomson, S. L.
使用真人大小的，自振荡的声带模型与理想化的几何形状的基础上，人类声带声带的声音产生的影响，非对称声带刚度进行了评估。该模型是使用弹性，材料线性硅化合物与杨氏模量值相当于声带组织。该模型包括一个两层的设计，以模拟声带分层结构。“左”和“右”声带模型的各自的杨氏弹性模量是不同的，以创建不对称的条件。高速视频记录被用来测量最大声带偏移，振动频率和左右相移，所有这些都受到不对称性的显著影响。起始压力，一个衡量发声努力的指标，随着不对称而增加。粒子图像测速（PIV）分析显示，声门射流在更硬的声带模型方向上的倾斜度显着更大。提到了对各种临床条件的潜在应用，并提出了对未来相关研究的建议。
The influence of asymmetric vocal fold stiffness on voice production was evaluated using life-sized, self-oscillating vocal fold models with an idealized geometry based on the human vocal folds. The models were fabricated using flexible, materially-linear silicone compounds with Young’s modulus values comparable to that of vocal fold tissue. The models included a two-layer design to simulate the vocal fold layered structure. The respective Young’s moduli of elasticity of the “left” and “right” vocal fold models were varied to create asymmetric conditions. High-speed videokymography was used to measure maximum vocal fold excursion, vibration frequency, and left-right phase shift, all of which were significantly influenced by asymmetry. Onset pressure, a measure of vocal effort, increased with asymmetry. Particle image velocimetry (PIV) analysis showed significantly greater skewing of the glottal jet in the direction of the stiffer vocal fold model. Potential applications to various clinical conditions are mentioned, and suggestions for future related studies are presented.
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