Acta Psychologica Sinica

Abstract

[Objective] To observe the expression of binaural hearing at high intensive click on the auditory brainstem responses (ABR) in cats, so as to explore the effects of cross-hearing produced by 95dB click on the checked ear and the interference produced by steady while noise (SWN) and the click on binaural ears. [Method] Take the amplitude of ABR for detective index, to observe and to compare the change of amplitude of ABR evoked by 95dB click when contralateral ear was loaded by 75dB SWN between before and after the damage of the cochlea. [Result] (1) we found the 75dB SWN can increase the amplitude of the wave P_III and wave P_IV of ABR evoked by 95dB click obviously before the damage of the cochlea (p < 0.01). (2) after the cochlea was damaged the 75dB SWN had no effect on the amplitude of ABR evoked by 95dB click (p > 0.05). (3) before the cochlea was damaged the amplitude of wave P_IV of ABR evoked by 95dB click when contralateral ear was loaded by 75dB SWN less than after the cochlea was damaged the amplitude of wave P_IV of ABR evoked by 95dB click (p < 0.05). [Conclusion] The cross-hearing had an expression on the wave P_III and wave P_IV of ABR and the binaural interference produced by the 95dB click with 75dB SWN only had expression on wave P_IV of ABR when the intensity of click was at 95dB.

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