Fluid Motion and Pressure Distribution in the Human Inner Ear during Bone Conduction Hearing (en)

* Presenting author
Day / Time: 09.03.2023, 10:20-10:40
Room: Saal X11-12
Typ: Vortrag (strukturierte Sitzung)
Abstract: Different mechanisms cause a displacement of the basilar membrane during bone conduction hearing: a relative motion between stapes footplate and the inner ear, inertial forces of the fluids in the cochlea due to its translation, and a pressure change due to its compression.In this study, finite element simulations are conducted to characterize and compare these mechanisms. The finite element model is based on an anatomical inner ear geometry within an osseous cuboid that includes the three scalae, the vestibulum and the semicircular ducts. The fluid motion and the pressure distribution inside the inner ear are compared for varying excitations in different directions and the relation between the pressure variation and the resulting basilar membrane motion is analyzed. Knowing its characteristics, e.g., its directionality, helps to better understand bone conduction phenomena such as one’s own voice perception.This work is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) ¬ Project-ID 352015383 ¬ SFB 1330 A4.