摘要
目的研究儿童短纯音(tone burst)及同侧切迹噪声(notched noise)掩蔽短纯音诱发的ABR反应阈,与短声诱发的听性脑干反应(click-evoked auditory brainstem response,c-ABR)以及40Hz听觉事件相关电位(40 Hz Auditory Event Related Potentials,40 Hz AERP)反应阈的关系,以评价这些测试方法在儿童听力评估中的应用价值。方法应用SmartEP听觉诱发电位仪在29例(53耳)儿童(男18例,女11例,年龄2月～8岁)中测试短声ABR、短纯音ABR、两种不同强度切迹噪声掩蔽短纯音诱发的ABR(分别定义为c-ABR、tb-ABR、amtb-ABR和bmtb-ABR)及40 Hz AERP。结果(1)tb-ABR、amtb-ABR、bmtb-ABR在2kHz、4kHz两个频率的反应阈与c-ABR的反应阈接近,反应阈之间有较好的相关性;(2)tb-ABR、amtb-ABR、bmtb-ABR的反应阈与40HzAERP的反应阈在0.5、1、2、4kHz各个频率均接近并有较好的相关性。结论使用短纯音及同侧切迹噪声掩蔽短纯音诱发的ABR的反应阈预测儿童的纯音行为听阈是可行的。
Objective To compare thresholds of auditory brain stem responses （ABR） evoked by tone bursts,and tone bursts ipsilaterally masked by notched noise to thresholds of click-evoked ABR and 40 Hz AERP in children with hearing loss and to determine their values in hearing assessment among pediatric populations. Methods Click-evoked ABRs （c-ABR）, ABRs to tone bursts （tb-ABR） and to tone bursts ipsilaterally masked by notched noise of different in- tensities （amtb-ABR and bmtb-ABR）, and 40Hz AERPs were tested using a SmartEP, system in 29 children （53 ears）, Of the subjects, 18 were male and 11 were female. Results 1） tb-ABR, amtb-ABR and bmtb-ABR thresholds were similar and highly correlated with those of c-ABR at 2 kHz and 4 kHz. 2） These thresholds were similar and highly correlated with those of 40Hz AERPs at 0.5, 1, 2 and 4 kHz. Conclusion ABRs to tone burst and tone burst ipsilaterally masked by notched noise can be used as alternative methods in predicting hearing levels in children.
出处
《中华耳科学杂志》
CSCD
2009年第2期146-151,共6页
Chinese Journal of Otology
基金
科技部"十一.五"支撑项目(项目号:2007BAI18B12)
关键词
短纯音
切迹噪声
听性脑干反应
Tone burst
Notched noise
Auditory brain stem response
