Acoustic and Physiologic Aspects of Bone Conduction Hearing
Acoustic and Physiologic Aspects of Bone Conduction Hearing
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DOI：
10.1159/000323574
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发表时间：
2011-01-01
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影响因子：
--
通讯作者：
Stenfelt, Stefan
中科院分区：
文献类型：
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作者：
Stenfelt, Stefan
骨传导（BC）是声音能量通过颅骨传输到耳蜗引起声音感知的方式。即使BC声音传输涉及若干路径，包括在耳道中引起的声压、作用于中耳听小骨和耳蜗流体的惯性力、耳蜗空间的改变以及通过耳蜗的第三窗口的压力传输，BC声音最终在基底膜上产生类似于空气传导声音的波动。BC刺激的效率在很大程度上取决于颅骨，其中颅骨在低频下充当刚性体并且在较高频率下结合不同类型的波传输。耳间刺激差异由对侧和同侧BC声音传输之间的差异确定：经颅BC声音传输。为了从双耳处理中受益，经颅传输应该是低的，而对于单侧耳聋受试者使用BC助听器时，经颅传输应该是高的。通过适当地定位刺激，可以实现高或低的经颅传输。版权所有（C）2011 S. Karger AG，巴塞尔
Bone conduction (BC) is the way sound energy is transmitted by the skull bones to the cochlea causing a sound perception. Even if the BC sound transmission involves several pathways including sound pressure induced in the ear canal, inertial forces acting on the middle ear ossicles and cochlear fluids, alteration of the cochlear space, and pressure transmission through the 3rd window of the cochlea, the BC sound ultimately produces a wave motion on the basilar membrane similar to that of air-conducted sound. The efficiency of the BC stimulation is largely dependent on the skull bone where the skull acts as a rigid body at low frequencies and incorporates different types of wave transmission at higher frequencies. The interaural stimulation difference is determined by the difference between contralateral and ipsilateral BC sound transmission: the transcranial BC sound transmission. To benefit from binaural processing, the transcranial transmission should be low, while the same should be high when using BC hearing aids for unilateral deaf subjects. By appropriately positioning the stimulation, high or low transcranial transmission can be achieved. Copyright (C) 2011 S. Karger AG, Basel