BASILAR MEMBRANE DISPLACEMENT WITH OPENED AND OCCLUDED OVAL WINDOW AND BONE CONDUCTION

摘要

Hearing sensations are caused by air and bone guided sound. Of course other biological materials like tendons, muscles and tissue are also involved during conduction of sound. To study the influence of bone conduction (BC) a formerly developed finite element model was excited by harmonic pressure signals at the cochlea wall. Clinical findings during middle ear surgery, namely the increase of bone conduction sensitivity with removed footplate was confirmed.Additionally the effects of an immobile footplate and round window aplasia and bone conduction are studied. The maximum basilar membrane displacement with the closure of the oval and the round window and both with BC is examined numerically.