Suzaki Y, Wada H, Ohyama K, Kobayasi T, Houzawa K, Takasaka T
Department of Otolaryngology, Touhoku Kousai Hospital, Sendai.
Nihon Jibiinkoka Gakkai Kaiho. 1997 Mar;100(3):342-50. doi: 10.3950/jibiinkoka.100.342.
The dynamic behavior of the middle ear was studied in living guinea pigs by using a laser Doppler vibrometer coupled to a compound microscope. Placing glass microbeads 20 microns in diameter on four points of the tympanic membrane and six points of the ossicles, their velocity amplitudes were measured under a constant stimulus of 65 dB SPL. Velocity responses of the four points on the tympanic membrane differed over the frequency range from 0.1 kHz to 3 kHz. At low frequencies, the malleus and incus rotated around an axis running from the malleus head to the incus short process. At middle frequencies, the whole ossicle had a piston-like motion. At high frequencies, the malleus and incus rotated around a vertical axis running through the ossicles, while the stapes had a hinge-like movement.
通过将激光多普勒振动计与复式显微镜耦合，对活体内豚鼠的中耳动态行为进行了研究。将直径20微米的玻璃微珠放置在鼓膜的四个点和听小骨的六个点上，在65 dB SPL的恒定刺激下测量其速度幅值。鼓膜上四个点的速度响应在0.1 kHz至3 kHz的频率范围内有所不同。在低频时，锤骨和砧骨围绕从锤骨头到砧骨短突的轴线旋转。在中频时，整个听小骨呈活塞样运动。在高频时，锤骨和砧骨围绕穿过听小骨的垂直轴旋转，而镫骨则呈铰链样运动。
