临床耳蜗电图中耳蜗微音电位的可靠性

Reliability of cochlear microphonics in clinical electrocochleography.

作者信息

Kumagami H, Miyazaki M

出版信息

ORL J Otorhinolaryngol Relat Spec. 1987;49(2):93-8. doi: 10.1159/000275913.

Abstract

A study was made on the reliability of cochlear microphonics (CM) recorded in clinical electrocochleography (ECochG) by the transtympanic electrode technique. In normal-hearing subjects, the CM shift increased as the frequency was lowered at the same sound pressure, and as the sound pressure was lowered at the same frequency. The CM shift for the frequencies from 8 to 0.5 kHz was greater as the sound pressure was lowered. The above results suggest that clinical ECochG CM responses may well reflect the potential of the cochlea.

摘要

采用经鼓膜电极技术对临床耳蜗电图（ECochG）记录的耳蜗微音电位（CM）的可靠性进行了研究。在听力正常的受试者中，在相同声压下，随着频率降低，CM偏移增加；在相同频率下，随着声压降低，CM偏移也增加。当声压降低时，8至0.5kHz频率范围内的CM偏移更大。上述结果表明，临床ECochG的CM反应很可能反映了耳蜗的电位。