HETERODYNE INTERFEROMETER MEASUREMENTS OF THE FREQUENCY-RESPONSE OF THE MANUBRIUM TIP IN CAT
HETERODYNE INTERFEROMETER MEASUREMENTS OF THE FREQUENCY-RESPONSE OF THE MANUBRIUM TIP IN CAT
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DOI：
10.1016/0378-5955(90)90152-f
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发表时间：
1990-08-15
期刊：
影响因子：
2.8
通讯作者：
FUNNELL, WRJ
中科院分区：
文献类型：
--
作者：
DECRAEMER, WF;KHANNA, SM;FUNNELL, WRJ
外差干涉仪被证明是一个非常准确的工具来测量锤反应的振幅和相位在声刺激。结果表明，为了获得相同的精度在声压测量，压力响应必须重新测量在短的时间间隔。在高于4kHz的频率下，各种总共振在频率响应曲线上是明显的。根据动物的不同，共振或多或少是明显的。由于精度的提高，锤骨振动响应随时间的变化可以清楚地区分。这些变化可能与这些共振位置的频率偏移有关。比较实验频率响应和集总参数模型预测文献表明，这些共振是不存在的模型响应。
A heterodyne interferometer proved to be a very accurate tool to measure amplitude and phase of the malleus response during acoustical stimulation. It was shown that to obtain equal accuracy in the acoustical pressure measurements, pressure response must be remeasured at short time intervals. At frequencies above 4 kHz various gross resonances are apparent on the frequency response curves. The resonances are, depending on the animal, more or less pronounced. As a result of the improved accuracy changes of the malleus vibration response with time could clearly be discriminated. These changes can be related to shifts in frequency of the position of these resonances. Comparison of experimental frequency response and lumped parameter model predictions from literature shows that these resonances are not present in the model responses.