Konrádsson K S, Ivarsson A, Bank G
Department of Otolaryngology, General Hospital, University of Lund, Malmö, Sweden.
Scand Audiol. 1987;16(3):159-66. doi: 10.3109/01050398709042171.
The vibrational movements of the tympanic membrane (TM) of in vitro human specimens were studied by computerized laser Doppler interferometry. The versatility of the method for measuring the velocity of the vibrating TM was demonstrated by point measurements, horizontal sweeps, and three-dimensional scans of the entire TM. Single phases of the TM vibration were examined and plotted three-dimensionally. All information was stored digitally, making it possible to recreate the movements as in slow motion on the oscilloscope. The effect of coating the TM with a thin layer of magnesium oxide was studied. The repeatability of the method was demonstrated. TM vibrational patterns at different sound pressure levels and frequencies are displayed and discussed as also are the results of scanning the specimen in different positions.
通过计算机激光多普勒干涉测量法研究了体外人体标本鼓膜（TM）的振动运动。通过对振动鼓膜速度测量方法的点测量、水平扫描和整个鼓膜的三维扫描，证明了该方法的多功能性。对鼓膜振动的单相进行了检查并进行了三维绘图。所有信息都进行了数字存储，从而能够在示波器上以慢动作重现运动。研究了用氧化镁薄层覆盖鼓膜的效果。证明了该方法的可重复性。展示并讨论了不同声压级和频率下的鼓膜振动模式，以及在不同位置扫描标本的结果。
