Bohnke Frank, Arnold Wolfgang
Department of Otorhinolaryngology, Klinikum rechts der Isar, Technical University Munich, Munich, Germany.
ORL J Otorhinolaryngol Relat Spec. 2006;68(6):393-6. doi: 10.1159/000095283. Epub 2006 Oct 26.
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, a formerly developed finite element model was excited by harmonic pressure signals at the cochlea wall. The clinical finding during middle ear surgery, namely the increase in bone conduction sensitivity with removed footplate, was confirmed. Other psychoacoustic effects with bone conduction are described in the early experiments by Bárány, who proved the cancellation of air- and bone-conducted sound in humans. The simultaneous stimulation of the cochlea wall and the phase-reversed stimulation of the stapes footplate in the finite element model confirmed his findings. Further clues to the solution of unsolved problems in audiology and middle ear pathology are given.
听觉感受是由气导和骨导声音引起的。当然，在声音传导过程中，其他生物材料如肌腱、肌肉和组织也会参与其中。为了研究骨传导的影响，一个先前开发的有限元模型在耳蜗壁处由谐波压力信号激发。中耳手术中的临床发现，即去除镫骨底板后骨传导敏感性增加，得到了证实。骨传导的其他心理声学效应在巴拉尼早期的实验中有所描述，他证明了人类气导和骨导声音的抵消。有限元模型中对耳蜗壁的同时刺激和镫骨底板的相位反转刺激证实了他的发现。文中给出了听力学和中耳病理学中未解决问题解决方案的进一步线索。
