Intracochlear pressure measurements related to cochlear tuning
Intracochlear pressure measurements related to cochlear tuning
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DOI：
10.1121/1.1369098
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发表时间：
2001-07-01
影响因子：
2.4
通讯作者：
Olson, ES
中科院分区：
文献类型：
--
作者：
Olson, ES
压力依次在靠近基底膜（b.m.）和当压力传感器接近和/或离开基底膜时在其他位置测量一个scala鼓室（s.t.）的压力。在距基底膜约100 mum范围内测量的s.t.压力在空间上以该区域最佳频率附近的频率迅速变化。在非常接近b.m.的情况下，s.t.压力被调整并随声级非线性缩放。前庭尺度（s.v.）压力在s.t.压力的几秒内在镫骨附近的一个位置测量，主要作为参考压力。通过压力数据得到了Corti器官的驱动压力和b.m.m速度。两者都是经过调谐的非线性的。因此，它们的比值，即Corti复合体器官的比声阻抗，是相对未调谐的，只是轻微的非线性。专门检查了阻抗的负电阻（放大）和共振。在某些情况下，两者都被发现；作为一个整体，目前的结果限制了这些品质的可能性。(C) 2001美国声学学会。
Pressure in turn one of the scala tympani (s.t.) was measured close to the basilar membrane (b.m.) and at additional positions as the pressure sensor approached and/or withdrew from the b.m. The s.t. pressure measured within about 100 mum of the b.m. varied rapidly in space at frequencies around the region's best frequency. Very close to the b.m. the s.t. pressure was tuned and scaled nonlinearly with sound level. The scala vestibuli (s.v.) pressure was measured at one position close to the stapes within seconds of the s.t. pressure and served primarily as a reference pressure. The driving pressure across the organ of Corti and the b.m. velocity were derived from the pressure data. Both were tuned and nonlinear. Therefore, their ratio, the specific acoustic impedance of the organ of Corti complex, was relatively untuned, and only subtly nonlinear. The impedance was inspected specifically for negative resistance (amplification) and resonance. Both were detected in some instances; taken as a whole, the current results constrain the possibilities for these qualities. (C) 2001 Acoustical Society of America.