Refinements in modeling the passive properties of laryngeal soft tissue
Refinements in modeling the passive properties of laryngeal soft tissue
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DOI：
10.1152/japplphysiol.00892.2006
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发表时间：
2007-07-01
影响因子：
3.3
通讯作者：
Titze, Ingo R.
中科院分区：
文献类型：
--
作者：
Hunter, Eric J.;Titze, Ingo R.
三种犬固有喉肌（外侧环杓肌（LCA）、后环杓肌（PCA）和间杓状肌（IA））的非线性粘弹性被动特性符合改进的开尔文模型的参数。将这些特性与甲杓肌 (TA) 和环甲肌 (CT) 肌肉的特性以及先前未发表的人类声带韧带的粘弹性特性进行了比较。总结了声带韧带、粘膜和所有五块喉肌的改良开尔文模型的被动参数。结果表明，LCA、PCA 和 IA 肌肉的承载能力与 TA 和 CT 肌肉的功能不同。此外，LCA、PCA 和 IA 的应力应变滞后效应比之前报道的 TA 和 CT 或声带韧带大得多。这种效应的变化表明 TA 和 CT 肌肉内的结缔组织在某种程度上类似于声带韧带，但不同于 LCA、PCA 或 IA 肌肉。进一步证明按喉部系统功能组对喉部系统组织进行分组的潜在意义是独特的发现，即在其工作伸长范围内，LCA 和 PCA 几乎与声带韧带一样呈指数级僵硬。本文是与在线技术报告 (http://www.ncvs.org/ncvs/library/tech) 一起撰写的，其中提供了全面的肌肉数据和敏感性分析以及可下载的数据文件和计算机脚本。
The nonlinear viscoelastic passive properties of three canine intrinsic laryngeal muscles, the lateral cricoarytenoid (LCA), the posterior cricoarytenoid (PCA), and the interarytenoid (IA), were fit to the parameters of a modified Kelvin model. These properties were compared with those of the thyroarytenoid (TA) and cricothyroid (CT) muscles, as well as previously unpublished viscoelastic characteristics of the human vocal ligament. Passive parameters of the modified Kelvin model were summarized for the vocal ligament, mucosa, and all five laryngeal muscles. Results suggest that the LCA, PCA, and IA muscles are functionally different from the TA and CT muscles in their load-bearing capacity. Furthermore, the LCA, PCA, and IA have a much larger stress-strain hysteresis effect than has been previously reported for the TA and CT or the vocal ligament. The variation in this effect suggests that the connective tissue within the TA and CT muscles is somehow similar to the vocal ligament but different from the LCA, PCA, or IA muscles. Further demonstrating the potential significance of grouping tissues in the laryngeal system by functional groups in the laryngeal system was the unique finding that, over their working elongation range, the LCA and PCA were nearly as exponentially stiff as the vocal ligament. This paper was written in conjunction with an online technical report (http://www.ncvs.org/ncvs/library/tech) in which comprehensive muscle data and sensitivity analysis, as well as downloadable data files and computer scripts, are made available.