[Effects of the perforation of the tympanic membrane on its vibration--with special reference to an experimental study by holographic interferometry].
[Effects of the perforation of the tympanic membrane on its vibration--with special reference to an experimental study by holographic interferometry].
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鼓膜穿孔对其振动的影响——特别参考全息干涉实验研究[J].
DOI：
10.3950/jibiinkoka.94.231
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
M. Maeta
中科院分区：
文献类型：
--
作者：
M. Maeta
利用犬颞骨，分别在鼓膜的前、下、后3个部位制作鼓膜穿孔，采用全息干涉法观察和分析鼓膜穿孔对鼓膜振动的影响。正常犬鼓膜在其前部和后部的频率从低罗盘到2kHz左右有其各自的单个最大振幅点，并显示出主要以其为中心的同心圆振动模式。在3和4 kHz左右，后部和前部开始显示它们各自的节段振动，并且随着频率的增加，显示它们进一步复杂的多节段振动。共振频率为1或2 kHz左右。穿孔后鼓膜振动如下：1）对于后穿孔，前部分振动开始的频率传递到更高的频率，而对于其他穿孔，未注意到其余鼓膜的振动模式的变化。2)在锤骨尖端的振动振幅的比较检查显示，对于小穿孔，无论穿孔的位置如何，共振频率都没有变化，并且在共振频率附近注意到振动振幅的增加。3)对于前穿孔，即使穿孔扩大，也未观察到共振频率的变化，并且在共振频率附近观察到振动振幅的增加。4)对于后部和下部穿孔，共振频率随着穿孔的扩张而传递到更高的频率，并且在共振频率附近注意到振动振幅的增加。（250字处删节）
Using canine temporal bone, perforations were surgically prepared at the anterior, inferior and posterior parts of the tympanic membrane, and the influences of these perforations on the tympanic vibration were observed and analyzed by holographic interferometry. Normal canine tympanic membrane had its respective single maximum amplitude points at its anterior and posterior parts at a frequency from the low compass to 2 kHz or so and showed a concentric circular vibration pattern centering mainly there around. At 3 and 4 kHz or so, the posterior and anterior parts began to show their respective sectional vibrations and with an increase in frequency, showed their further complicated multi-sectional vibrations. Resonance frequency was 1 or 2 kHz or so. The tympanic vibration following the preparation of perforations was as follows: 1) For the posterior perforation, the frequency at which the anterior sectional vibration began passed to a higher frequency, while for the other perforations, no change was noted in vibration pattern of the remaining tympanic membrane. 2) Comparative examination of the vibration amplitude at the mallear tip revealed that for a small perforation, no change in resonance frequency was noted regardless of the location of perforation and an increase in vibration amplitude was noted near the resonance frequency. 3) For the anterior perforation, no change in resonance frequency was noted even with an expansion of perforation and an increase in vibration amplitude was noted near the resonance frequency. 4) For the posterior and inferior perforations, the resonance frequency passed to a higher frequency with an expansion of perforation and an increase in vibration amplitude was noted near the resonance frequency.(ABSTRACT TRUNCATED AT 250 WORDS)