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一项关于正常人通过电刺激前庭诱发肌源性电位的研究。

A study on vestibular-evoked myogenic potentials via galvanic vestibular stimulation in normal people.

作者信息

Cheng Ying, Kimura Yusuke, Kaga Kimitaka

机构信息

National Institute of Sensory Organs, Tokyo Medical Center, Japan.

The Department of Otolaryngology Head and Neck Surgery in the Second Affiliated Hospital of Xi 'an Jiaotong University, Shaanxi Province, PR China.

出版信息

J Otol. 2018 Mar;13(1):16-19. doi: 10.1016/j.joto.2017.09.001. Epub 2017 Oct 6.

DOI:10.1016/j.joto.2017.09.001
PMID:29937861
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6002623/
Abstract

OBJECTIVES

The aim of our study is to examine vestibular-evoked myogenic potentials (VEMPs) elicited by the galvanic vestibular stimulation in the sternocleidomastoid muscle (SCM) in healthy subjects for clinical applications of auditory neuropathy or vestibular neuropathy in the future.

METHODS

We enrolled sixteen healthy subjects to record the average responses of SCM to galvanic vestibular stimulation (GVS) [current 3 mA; duration 1 ms] by electromyography (EMG). SPSS18.0 software was used to analyze the obtained data for mean and standard deviation.

RESULTS

In all healthy subjects mastoid-forehead galvanic vestibular stimulation produced a positive-negative biphasic EMG responses on SCM ipsilateral to the cathodal electrode. The latency of p13 was 11.7 ± 3.0 ms. The latency of n23 was 17.8 ± 3.4 ms. The amplitude of p13-n23 was 147.0 ± 69.0 μV. The interaural asymmetry ratio (AR) of p13, n23 latency and the amplitude was respectively 0.12 ± 0.09, 0.08 ± 0.08 and 0.16 ± 0.10.

DISCUSSIONS

Galvanic vestibular stimulation could elicit biphasic EMG responses from SCM via the vestibular nerve but not from the otolith organs. Galvanic stimulation together with air conducted sound (ACS) or bone conducted vibration (BCV) can elicit VEMPs and may enable the differentiation of retrolabyrinthine lesions from labyrinthine lesions in vestibular system.

摘要

目的

我们研究的目的是检测健康受试者在接受胸锁乳突肌（SCM）的前庭电刺激时诱发的前庭诱发肌源性电位（VEMP），以便未来用于听神经病或前庭神经病的临床应用。

方法

我们招募了16名健康受试者，通过肌电图（EMG）记录SCM对前庭电刺激（GVS）[电流3 mA；持续时间1 ms]的平均反应。使用SPSS18.0软件分析获得的数据的平均值和标准差。

结果

在所有健康受试者中，乳突-前额前庭电刺激在阴极电极同侧的SCM上产生了正负双相肌电图反应。p13的潜伏期为11.7±3.0 ms。n23的潜伏期为17.8±3.4 ms。p13-n23的振幅为147.0±69.0μV。p13、n23潜伏期和振幅的耳间不对称率（AR）分别为0.12±0.09、0.08±0.08和0.16±0.10。

讨论

前庭电刺激可通过前庭神经而非耳石器官从SCM诱发双相肌电图反应。电刺激与气导声音（ACS）或骨导振动（BCV）一起可诱发VEMP，并可能有助于区分前庭系统中迷路后病变与迷路病变。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/6002623/cf271164cbc9/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/6002623/99f477a8e564/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/6002623/9040d36c042f/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/6002623/cf271164cbc9/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/6002623/99f477a8e564/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/6002623/9040d36c042f/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a39c/6002623/cf271164cbc9/gr3.jpg

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