Naidu Ram C, Mountain David C
Hearing Research Center Boston University, Boston, Massachusetts 02215, USA.
J Acoust Soc Am. 2007 Feb;121(2):994-1002. doi: 10.1121/1.2404916.
Anatomical studies suggest that the basilar membrane (BM) supports a radial tension, which is potentially important in cochlear mechanics. Assuming that the tension exists, we have calculated its magnitude from measurements of BM stiffness, longitudinal coupling, and geometry using a BM model. Results for the gerbil cochlea show that the tension decreases from the base to the apex of the cochlea and generates a tensile stress that is comparable in magnitude to the stress generated in other physiological systems. The model calculations are augmented by experiments that investigate the source of BM tension. The experimental results suggest that BM tension is maintained by the spiral ligament.
解剖学研究表明，基底膜（BM）承受着径向张力，这在耳蜗力学中可能具有重要意义。假设这种张力存在，我们使用基底膜模型，通过对基底膜刚度、纵向耦合和几何形状的测量来计算其大小。沙鼠耳蜗的结果表明，张力从耳蜗底部向顶部递减，并产生了与其他生理系统中产生的应力大小相当的拉应力。通过研究基底膜张力来源的实验对模型计算进行了补充。实验结果表明，基底膜张力由螺旋韧带维持。
