Longitudinal pattern of basilar membrane vibration in the sensitive cochlea
Longitudinal pattern of basilar membrane vibration in the sensitive cochlea
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DOI：
10.1073/pnas.262663699
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发表时间：
2002-12-24
影响因子：
11.1
通讯作者：
Ren, TY
中科院分区：
文献类型：
--
作者：
Ren, TY
在正常的哺乳动物耳朵中，声音振动鼓膜，导致中耳的微小骨骼振动，将振动传递到内耳液。振动沿耳蜗区从耳蜗底传播到耳蜗尖。尽管这一概念对听力理论至关重要，但耳蜗区振动的波形尚未在活体中测量。在这里，我报告了用扫描激光干涉仪在敏感的沙土鼠耳蜗基底圈测量到的“快照”(耳蜗区振动的瞬时波形)。对于16 kHz的音调，在观察到的耳蜗长范围内，相位延迟高达677弧度(
In the normal mammalian ear, sound vibrates the eardrum, causing the tiny bones of the middle ear to vibrate, transferring the vibration to the inner ear fluids. The vibration propagates from the base of the cochlea to its apex along the cochlear partition. As essential as this concept is to the theory of hearing, the waveform of cochlear partition vibration has yet to be measured in vivo. Here I report a "snapshot" (the instantaneous waveform of cochlear partition vibration) measured in the basal turn of the sensitive gerbil cochlea using a scanning laser interferometer. For 16-kHz tones, the phase delay is up to 677 radians over the observed cochlear length (