Probst R, Coats A C, Martin G K, Lonsbury-Martin B L
Hear Res. 1986;21(3):261-75. doi: 10.1016/0378-5955(86)90224-8.
Evoked and spontaneous otoacoustic emissions were recorded bilaterally in a group of normal subjects (n = 14) using clicks and tonebursts at four frequencies (0.5, 1, 1.5, and 3 kHz). All ears (n = 28) demonstrated evoked emissions, but not to every stimulus type. The 0.5-kHz toneburst evoked emissions in only 10 (36%) ears, the 1.5-kHz toneburst in all ears, and the remaining stimuli in at least 80% of ears. Two distinct patterns of evoked emissions were identified. Five (18%) ears showed short, broadband click-evoked emissions lasting less than 20 ms after stimulus onset. In these ears, toneburst-evoked emissions were often more prominent than click-evoked emissions and no spontaneous emissions were detected. Twenty-three (82%) ears showed click-evoked emissions lasting longer than 20 ms poststimulus onset. Spectral analysis of these emissions demonstrated several (2-10) narrow frequency peaks. Highly similar peaks were present in the spectra of toneburst-evoked emissions within the range of toneburst spectra. Spontaneous emissions were recorded in 12 of the 23 ears. In these ears, at the frequencies of spontaneous emissions, prominent peaks in both click- and toneburst-evoked emission spectra were always present. Otoacoustic emission characteristics correlated significantly between the ears of individual subjects inferring that a symmetrical cochlear mechanism generates otoacoustic emissions.
在一组正常受试者（n = 14）中，使用四个频率（0.5、1、1.5和3 kHz）的短声和短纯音对双耳记录诱发耳声发射和自发性耳声发射。所有耳朵（n = 28）均显示出诱发耳声发射，但并非对每种刺激类型都有反应。0.5 kHz短纯音仅在10只（36%）耳朵中诱发耳声发射，1.5 kHz短纯音在所有耳朵中诱发耳声发射，其余刺激在至少80%的耳朵中诱发耳声发射。识别出两种不同的诱发耳声发射模式。五只（18%）耳朵显示出短的、宽带短声诱发耳声发射，刺激开始后持续时间少于20毫秒。在这些耳朵中，短纯音诱发耳声发射通常比短声诱发耳声发射更明显，且未检测到自发性耳声发射。23只（82%）耳朵显示短声诱发耳声发射在刺激开始后持续时间超过20毫秒。对这些耳声发射的频谱分析显示有几个（2 - 10个）窄频率峰值。在短纯音频谱范围内，短纯音诱发耳声发射的频谱中存在高度相似的峰值。23只耳朵中有12只记录到自发性耳声发射。在这些耳朵中，在自发性耳声发射的频率处，短声和短纯音诱发耳声发射频谱中总是存在明显的峰值。个体受试者双耳之间的耳声发射特征显著相关，这表明对称的耳蜗机制产生耳声发射。
