Chen X, Liu C, Guo L
Beijing Institute of Otorhinolaryngology.
Zhonghua Er Bi Yan Hou Ke Za Zhi. 1994;29(1):38-41.
Bilateral cochlear microphonics (CM) were evoked by tone burst simultaneously. A speaker was put in head-foot axis 2m from the mid-point of a given line connecting the bilateral external meatus. Seven normal persons and 106 cases of unilateral sensory hearing loss and recruitment were examined. When recruitment was present, CM at corresponding frequencies were enlarged and prolongated. In 62 cases CM delayed slowly, while other 27 cases quickly. In addition to 2 cases of bilateral Ménière disease with sensory hearing loss and recruitment, CM were enlarged and prolongated at some frequencies in left ears and at other frequencies in right ears in accordance with predominant recruitment. Meanwhile CM of the opposite normal ear decreased obviously. CM could not be evoked from profound and totally deaf ears.
同时用短纯音诱发双侧耳蜗微音电位（CM）。将扬声器置于与双侧外耳道连线中点相距2米的头足轴上。对7名正常人和106例单侧感音神经性听力损失及重振患者进行了检查。当存在重振时，相应频率的CM增大且延长。62例CM延迟缓慢，另27例延迟迅速。除2例双侧梅尼埃病伴感音神经性听力损失及重振外，根据主要的重振情况，左耳某些频率的CM增大且延长，右耳其他频率的CM增大且延长。同时，对侧正常耳的CM明显降低。极重度聋耳和全聋耳无法诱发出CM。
