短声强度为95dB时猫的两耳听现象  

BINAURAL HEARING AT 95dB CLICK OF CAT

作　　者：安玉香[1] 汤浩[1] 韩宝财 

机构地区：[1]中国医科大学听觉研究室,沈阳110001 [2]辽宁教育音像出版社,沈阳110031

出　　处：《心理学报》2003年第3期393-396,共4页Acta Psychologica Sinica

摘　　要：研究短声强度为 95dB时猫的两耳听现象 ,探讨两耳干涉作用和交叉听力在听觉脑干电反应 (ABR)上的表达。以ABR为检测指标 ,观察和比较耳蜗破坏前后对侧耳负荷 75dBSWN时 95dB短声诱发的ABR各波振幅的变化。结果 :⑴耳蜗破坏前对侧耳负荷的 75dBSWN可使 95dB短声诱发的ABR之 pⅢ 、pⅣ 波振幅增大 (p <0 .0 1 )。⑵耳蜗破坏后对侧耳负荷的 75dBSWN对 95dB短声诱发的ABR各波振幅无影响 (p >0 .0 5)。⑶耳蜗破坏前对侧耳负荷 75dBSWN时 95dB短声诱发的ABR之 pⅣ 波振幅比耳蜗破坏后 95dB短声诱发的ABR之 pⅣ 减小 (p <0 .0 5)。结论 :短声强度为 95dB时 ,交叉听力现象在ABR之pⅢ 、pⅣ 波上均有表达 ,与 75dBSWN产生的两耳干涉作用仅在ABR之pⅣ睴bjective〕 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 white 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〕⑴ 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).⑵after the cochlea was damaged the 75dB SWN had no effect on the amplitude of ABR evoked by 95dB click( p> 0.05).⑶before 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 then 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.

关 键 词：两耳干涉作用 交叉听力 两耳听现象 听觉脑干电反应 

分 类 号：B842[哲学宗教—基础心理学]