用于言语运动控制研究的舌体三维动态生物力学模型
A 3D dynamical biomechanical tongue model to study speech motor control
摘要：
提出了一个人舌的三维生物力学动力学模型，旨在验证有关言语运动控制的假设。在有限元建模（FEM）中考虑了组织弹性特性。有限元网格的设计，以促进在舌头内的肌肉排列的实施。因此，它的结构是根据有关舌的准确解剖数据确定的。力学上，采用超弹性假设，应变能函数采用Mooney-Rivlin公式。肌肉被建模为一般的力发生器，作用在解剖学上指定的节点集的FEM结构。8肌肉，已知是在很大程度上参与生产的基本语音运动建模。该模型和拉格朗日运动方程的求解是使用ANGRAM软件实现的。肌肉激活对舌形的影响的模拟和分析。
英文摘要：
A 3D biomechanical dynamical model of human tongue is presented, that is elaborated in the aim to test hypotheses about speech motor control. Tissue elastic properties are accounted for in Finite Element Modeling (FEM). The FEM mesh was designed in order to facilitate the implementation of muscle arrangement within the tongue. Therefore, its structure was determined on the basis of accurate anatomical data about the tongue. Mechanically, the hypothesis of hyperelasticity was adopted with the Mooney-Rivlin formulation of the strain energy function. Muscles are modeled as general force generators that act on anatomically specified sets of nodes of the FEM structure. The 8 muscles that are known to be largely involved in the production of basic speech movements are modeled. The model and the solving of the Lagrangian equations of movement are implemented using the ANSYSTM software. Simulations of the influence of muscle activations onto the tongue shape are presented and analyzed.
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