High-speed video analysis of acoustically oscillated stapes.

在传导性听力损失中，没有报告将中耳的实际运动捕获为图像。因此，定量评价中耳功能是一个困难的问题，本研究通过高速摄像机对镫骨在声音刺激下的运动进行了捕捉和分析。来自耳道的声波可以准确地转换成中耳中镫骨的垂直运动。在任何条件下，生物或断头模型，病理或治疗模型，单一或弦刺激，镫骨运动的频率与刺激音的频率完全相同。利用高速摄影机对中耳进行直接成像，证明中耳通过转换效率对镫骨运动幅度的转换来进行听力工作。

In the conductive hearing loss, there were no reports captured the actual movement of the middle ear as an image. So quantitative evaluation of middle ear function was difficult.This time, through using a high-speed camera, we capture and analysis the stapes movement stimulated by sound. Sound waves from the ear canal can be accurately converted into vertical motion of the stapes in the middle ear. The frequency of the stapes movement was completely identical to the frequency of the stimulating tone under any conditions, biological or decapitated model, pathology or treatment model, the single or chord stimulation. By direct imaging of the middle ear using high-speed camera, we demonstrated that the middle ear work in hearing by the conversion efficiency to the amplitude of the stapes movement.