Xue S, Mountain D C, Hubbard A E
Department of Biomedical Engineering, Boston University, MA 02215.
Hear Res. 1993 Oct;70(1):121-6. doi: 10.1016/0378-5955(93)90056-7.
Acoustic enhancement of the electrically-evoked otoacoustic emissions (EEOEs) was investigated by systematically varying acoustic frequency and intensity. The results demonstrated that simultaneous acoustic stimulation at frequencies around the characteristic frequency of the electrical current injection place was most effective in enhancing low-frequency EEOEs. Moreover, it was demonstrated that the enhancement was tuned and graded. The enhancement threshold tuning curves (defined as sound pressure level needed to achieve 1 dB of enhancement) resembled basilar membrane tuning at high sound pressure levels. The data suggest that the emissions were generated from a cochlear region near the electrode place, and the magnitude of the enhancement depends on the magnitude of the basilar membrane response to the acoustic stimulus.
通过系统地改变声频和声强，研究了电诱发耳声发射（EEOEs）的声学增强效应。结果表明，在电流注入部位的特征频率附近的频率上同时进行声刺激，对增强低频EEOEs最为有效。此外，还证明了这种增强是调谐的和分级的。增强阈值调谐曲线（定义为实现1 dB增强所需的声压级）在高声压级下类似于基底膜调谐。数据表明，这些发射是由电极部位附近的耳蜗区域产生的，增强的幅度取决于基底膜对声刺激的反应幅度。
