摘要
目的通过骨导振动刺激诱发的眼肌前庭肌源诱发电位(bone conducted ocular vestibular evoked myogenic potential,BC-oVEMP)测量健康青年人的反应和表现,为骨导眼肌前庭肌源诱发电位临床应用提供正常参考值。方法选择20名健康青年人作为研究对象,经校准的激振器在受试者头颅正中近发际线处施加141.1 dB力级(force level,FL)的骨导振动,听觉诱发电位仪记录BC-oVEMP的电位波形,并计算正常值参数范围。结果受试者全部引出VEMP波形,N_1-P_1波引出率为100%,N_1的潜伏期为10.31±0.51 ms,P_1潜伏期为15.14±1.48 ms,波间期为4.83±1.28ms,振幅为10.91±5.02μV。除振幅耳间波动稍大外,oVEMP阈值、N_1潜伏期及P_1潜伏期左右耳间波动很小。结论 BCoVEMP是一种简单安全快速检测椭圆囊功能的临床实用技术,与气导给声VEMP相比,它不依赖于外中耳结构的声传导途径,引出率高,获得电位波形幅度更大,更加稳定可靠。
Objective To identify the characteristics of the bone conducted ocular vestibular evoked myogenic potential（BC-oVEMP） in the young normal Chinese subjects.Methods Twenty normal subjects were recruited for conventional examinations of oVEMP.Bone conducted vibration was delivered through a bone vibrator, a power amplifier and auditory evoked response recording system. The threshold of oVEMP in each ear was examined： patterns of these waves were observed and the normal ranges of the oVEMP waves responded to 141.1 dBFL were calculated. Results All subjects were elicited with normal oVEMP with N1 and P1 waves in both ears.The response rate in these subjects was 100%. The latency of N1 was 10.31±0.51ms, latency of P1 was 15.14±1.48ms, interval N1-PI was 4.83±1.28ms, amplitude was 10.91±5.02μV.Conclusions BC-oVEMP is a clinically practical way of measuring utricular function simply, safely and quickly. Compared with air-conducted oVEMP, it has greater amplitude and doesn＇t depend on air conducted structures, thus it＇s more stable and effective.
出处
《中国听力语言康复科学杂志》
2017年第5期356-358,共3页
Chinese Scientific Journal of Hearing and Speech Rehabilitation
基金
空军军医大学科技发展基金项目(2016XC095)
西京医院助推项目(XJZT14X07)
国家自然科学基金面上项目(81470695)
关键词
骨导振动
前庭功能
前庭肌源诱发电位
椭圆囊
Bone conducted vibration（BCV）
Vestibular function
Vestibular evoked myogenic potential（VEMP）
Utricle
作者简介
刘嘉伟 本科在读；研究方向：临床听力学
通讯作者：查定军，E-mail：zhadjun@fmmu．edu．cn
