Sysueva E V, Supin A Ya, Nechaev D I, Rozhnov V V, Tarakanov M B, Popov V V
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, 119071, Russia.
Dokl Biol Sci. 2018 Jul;481(1):135-138. doi: 10.1134/S0012496618040087. Epub 2018 Aug 31.
The frequency resolving power of hearing (FRP) of the beluga whale Delphinapterus leucas was studied as dependent on influence of lasting low-intensity sounds (of the ultrasonic range from -20 to +10 dB). Testing of the spectrum ripple-phase reversal was used in conjunction with a noninvasive recording of auditory evoked potentials. FRP parameters were found to depend nonmonotonically on the intensity of the background noise. The resultant adaptation effects can be explained by the fact that, in response to the high-intensity signals, the auditory system sensitivity is reduced to the level optimal for analysis of these signals.
研究了白鲸（白鲸属白鲸）的听觉频率分辨能力（FRP），该能力取决于持续低强度声音（超声范围为-20至+10分贝）的影响。频谱纹波相位反转测试与听觉诱发电位的无创记录相结合使用。发现FRP参数非单调地依赖于背景噪声的强度。产生的适应效应可以通过以下事实来解释：响应高强度信号时，听觉系统的敏感性会降低到对这些信号进行分析的最佳水平。
