正常人长潜伏期听觉诱发电位的法医学应用价值  

Study on long latency auditory evoked potentials and their application value in the forensic medicine

作　　者：张馨元[1] 刘昕[2] 尚笑平 关楠思[1] 梁宇光[1] 刘技辉[1] 

机构地区：[1]中国医科大学法医学院临床法医学教研室,辽宁沈阳110001 [2]中国医科大学临床医药学院,辽宁沈阳110001 [3]长春市公安局司法鉴定中心,吉林长春130031

出　　处：《中国法医学杂志》2012年第4期279-282,共4页Chinese Journal of Forensic Medicine

摘　　要：目的研究正常人短纯音诱发的不同频率长潜伏期听觉诱发电位(auditory long latency response,ALR)的特点及其法医学应用价值。方法选择主观检查配合的正常听力受试者20名(40耳),依次测试500、1 0002、000、4 000Hz4个频率的纯音主观听阈、短纯音主观听阈和短纯音ALR反应阈。结果在4个频率上,短纯音主观听阈与纯音主观听阈之差的均值和标准差分别为3.48±2.17、4.33±2.364、.07±1.78、3.96±2.21;短纯音ALR反应阈与短纯音主观听阈之差的均值和标准差分别为3.85±2.27、3.78±1.833、.15±2.14、5.22±2.04;短纯音ALR反应阈与纯音主观听阈之差的均值和标准差(dB)分别为7.33±3.12、8.11±2.627、.22±2.50、9.19±2.85。各频率短纯音ALR波反应阈与纯音主观听阈之差均在20dB之内。结论短纯音诱发的ALR具有频率特异性、接近主观听阈,能够反应整个听觉通路的功能状况。Objective Studing normal tone burst evoked different frequencies of long-latency auditory evoked potentials is characterized by its forensic application.Methods Select subjective test for normal hearing subjects with 20（40 ears） followed by testing 500Hz,1 000Hz,2 000Hz,4 000Hz four frequency pure tone subjective hearing thresholds,tone burst subjective hearing threshold and tone burst ALR response threshold.Results At four frequencies,tone burst subjective hearing threshold and pure tone subjective hearing threshold difference between the mean and standard deviation were 3.48 ± 2.17,4.33 ± 2.36,4.07 ± 1.78,3.96 ± 2.21;tone burst ALR reaction threshold and subjective auditory threshold difference between the mean and standard deviation were 3.85 ± 2.27,3.78 ± 1.83,3.15 ± 2.14,5.22 ± 2.04;tone burst ALR subjective response threshold and pure tone hearing threshold difference between the mean and standard deviation were（7.33 ± 3.12）dB,（8.11 ± 2.62）dB,（7.22 ± 2.50）dB,（9.19 ± 2.85）dB.Four frequency tone burst ALR subjective response threshold and pure tone hearing threshold difference in both within 20 dB.Conclusion Tone burst evoked with frequency-specific,close to the subjective auditory threshold,response to the auditory pathway to functional status.

关 键 词：法医临床学 听觉诱发电位 短纯音 客观测听 听阈 

分 类 号：D919[医药卫生—法医学]