Love J T, Stream R W
Laryngoscope. 1978 Feb;88(2 Pt 1):298-313. doi: 10.1288/00005537-197802000-00012.
The anatomic, neurologic, and physiologic characteristics of the middle ear structures have created confusion concerning the nature of the intraaural muscle reflex. After reviewing the relevant literature, we correlated this information with our studies of human temporal bones and computer analyses of the acoustic reflex responses of individuals with normal hearing. Our hypothesis is that although the stapedius is the initiator of the reflex and the primary contributor to ossicular chain fixation, the tensor tympani is responsible for the major observed response. The negative deflection present in normals tested on the impedance bridge is caused by the stapedius, whereas the large positive deflection is the result of the tensor tympani contraction. We postulate that proprioceptive feedback mechanisms located within the stapedius muscle and tendon permit and/or initiate tensor tympani contraction during acoustic stimulation.
中耳结构的解剖学、神经学和生理学特征引发了关于耳内肌反射本质的困惑。在回顾相关文献后，我们将这些信息与我们对人类颞骨的研究以及对听力正常个体的声反射反应的计算机分析相关联。我们的假设是，尽管镫骨肌是反射的启动者和听骨链固定的主要贡献者，但鼓膜张肌是观察到的主要反应的原因。在阻抗桥上测试的正常个体中出现的负向偏转是由镫骨肌引起的，而大的正向偏转是鼓膜张肌收缩的结果。我们推测，位于镫骨肌和肌腱内的本体感觉反馈机制在声刺激期间允许和/或启动鼓膜张肌收缩。
