EFFECT OF TYMPANIC MUSCLE ACTIVITY ON MOVEMENT OF THE EARDRUM, ACOUSTIC IMPEDANCE AND COCHLEAR MICROPHONICS.
EFFECT OF TYMPANIC MUSCLE ACTIVITY ON MOVEMENT OF THE EARDRUM, ACOUSTIC IMPEDANCE AND COCHLEAR MICROPHONICS.
复制标题
鼓室肌肉活动对鼓膜运动、声阻抗和耳蜗发声学的影响。
DOI：
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发表时间：
1964
影响因子：
1.4
通讯作者：
Aage R. Møller
中科院分区：
文献类型：
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作者：
Aage R. Møller
在麻醉的猫和兔子身上研究了鼓室肌肉的功能。在（1）两块鼓室肌肉独立收缩期间，以及（2）两块肌肉一起收缩期间，记录闭合外耳道中产生的气压变化以及鼓膜附近的声阻抗变化。还研究了鼓室肌肉收缩后耳蜗微音的变化。正如预期的那样，发现鼓膜张肌的收缩总是会在耳道中产生负压变化，表明鼓膜向内移动。镫骨肌的收缩不会产生任何变化或产生相当小的压力变化，这种变化可能是正的，也可能是负的。进一步发现，两块肌肉的同时收缩产生的气压负变化，其幅度小于鼓膜张肌单独产生的负变化。镫骨肌和鼓室张肌的独立收缩...
The functions of the tympanic muscles were studied in anesthetized cats and rabbits. The change in air pressure produced in the closed external auditory meatus and in the acoustic impedance near the eardrum was recorded during (1) independent contraction of the two tympanic muscles, and during (2) contraction of the two muscles together. The change in cochlear microphonics following contraction of the tympanic muscles was also studied. As expected, it was found that a contraction of the tensor tympani always produced a negative pressure change in the meatus indicating an inward movement of the eardrum. A contraction of the stapedius muscle produced no change or considerably smaller pressure change which could be either positive or negative. It was further found that simultaneous contraction of the two muscles produced a negative change in the air pressure the magnitude of which was smaller than that produced by the tensor tympani alone. Independent contraction of the stapedius and the tensor tympani muscl...