Cervial vestibular-evoked myogenic potential induced by galvanic vestibular stimulation in normal people].

[Cervial vestibular-evoked myogenic potential induced by galvanic vestibular stimulation in normal people].:

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[Cervial vestibular-evoked myogenic potential induced by galvanic vestibular stimulation in normal people].

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2020 Jan;34(1):57-60

Authors: Cheng Y, Zhang YZ, Han YQ, Ma WJ, Yang H, Zhao J, Chen F, Zhang Q, Xu M

Abstract

Objective:To establish a new method for detecting vestibular function by testing cervical vestibular-evoked myogenic potential induced by galvanic vestibular stimulation in normal population. Method:Twenty normal ears were tested for cervical vestibular evoked myogenic potential induced by galvanic vestibular stimulation. SPSS 18.0 software was used to analyze the obtained data. Result: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（11.52±3.05） ms. The latency of n23 was（15.31±3.38） ms. The amplitude of p13-n23 was（40.55±27.93） μV. The interval of p13-n23 was（3.53±1.38） ms. The interaural asymmetry ratio（AR, %） of p13, n23 latency, the amplitude and interval were respectively（6.96±6.79）%, （6.47±5.93）%, （28.08±26.42）% and （16.61±11.11）%. There was no significant difference in all parameters between the right and left ears of all subjects. Conclusion:The value of cervical vestibular-evoked myogenic potential induced by galvanic vestibular stimulation in normal subjects can be established to explore methods for diagnosis, treatment and researching mechanism of auditory neuropathy and vestibular neuropathy.

PMID: 32086900 [PubMed - indexed for MEDLINE]