短声和短音诱导豚鼠SP-AP电位的比较  

The Comparison of SP-AP Elicited by Tone Pip and Click in Guinea Pig

作　　者：鲁海涛[1] 龚树生[2] 

机构地区：[1]华中科技大学同济医学院附属协和医院耳鼻咽喉科,武汉430030 [2]首都医科大学附属北京同仁医院耳鼻咽喉科

出　　处：《听力学及言语疾病杂志》2010年第2期157-159,共3页Journal of Audiology and Speech Pathology

基　　金：国家自然科学基金资助项目(30872858)

摘　　要：目的比较短声和短音诱导的SP-AP电位。方法20只豚鼠分为2组,每组10只,分别采用短声和短音刺激,用圆窗电极记录SP-AP复合波。结果两种刺激声都能较好地诱导出SP-AP复合波。在1、2、4、8 kHz短音诱导的SP-AP波形较好,刺激声强度为100 dB SPL时,各频率短音诱导的SP波振幅分别为-13.56±8.7、-16.61±10.53、-10.13±14.75、-3.71±14.49μv;短声诱导的SP波振幅为-4.44±10.81μv。结论短音能成功诱导出SP-AP波,且具有频率特异性。Objective To compare the characteristics of the SP-AP compound wave elicited by click and tone pip. Methods The electrocochleogram was recorded with round window electrode, and waves were elicited by click and tone pips, respectively. Results The SP-AP compound waves were elicited 1,2,3,4 and 8 kHz tone pip and click. The amplitude of SP at each frequency was -13. 56±8. 7, -16. 61±10. 53,-10. 13±14. 75, -3. 71±14.49,-2.99±5.4 and -4.44±10.81 μv, respectively. Conclusion Tone pip at 1,2,3, 4, 8 kHz can elicit SP, and produce frequency specific SP wave. This is helpful to identify the lesion site of auditory neuropathy.

关 键 词：短声 短音 总和电位 

分 类 号：R764.04[医药卫生—耳鼻咽喉科]