Biomedical Research

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Numerical simulation on the dynamic behavior of the basilar membrane in the spiral cochlea.

In this paper, a three dimensional spiral cochlear finite element model is established based on the experimental data of the actual right human ear to study the curvature effect on the amplitude of the spiral basilar membrane (BM). Harmonic response analysis is then carried out. The simulation results are in good agreement with the published experimental results, which confirm the validity of the FE model, and show that the curvature has a great effect on the amplitude of the BM in a transverse direction at high frequency. Meantime, the spiral geometrical characteristic of the BM plays an important role in the amplification of BM amplitude to sound pressure.

Author(s): Wenjuan Yao, Yiqiang Chen, Jianwei Ma, Chaosun Gan, Dejiang Wang