The reference values of myotonia-corrected vibration vestibular evoked myogenic potentials for military pilots
10.3760/cma.j.cn11385420240902-00136
- VernacularTitle:军事飞行员经肌张力修正的前庭诱发肌源性电位参考值
- Author:
Ziyi DANG
1
;
Lihong ZHAI
1
;
Meng WANG
1
;
Zhanguo JIN
1
Author Information
1. 空军军医大学空军特色医学中心眩晕诊疗研究中心，北京 100142
- Publication Type:Journal Article
- Keywords:
Vestibular evoked myogenic potentials;
Electromyography;
Vestibular function tests;
Pilots
- From:
Chinese Journal of Aerospace Medicine
2024;35(4):249-254
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To more accurately evaluate the function of the otolith organ and its conduction pathway of pilots by collecting the vestibular evoked myogenic potentials (VEMPs) corrected by electromyogram (EMG) in healthy military pilots and comparing bilateral amplitude, amplitude asymmetry ratio and other relevant parameters with and without EMG rectification.Methods:One hundred (200 ears) healthy male active duty military pilots were selected as study subjects, with an average age of (26.86±6.54) years old. The cervical vestibular-evoked myogenic potential (cVEMP) and ocular vestibular-evoked myogenic potential (oVEMP) induced by air conduction acoustic stimulation were performed to the subjects in sitting position. Sound was delivered through inserted earphones, with the stimulus being tone burst at 97 dB nHL. The P1 latency, N1 latency, P1-N1 wave interval latency, and the P1-N1 amplitude and amplitude asymmetry ratio of VEMPs were recorded before and after the correction of EMG and those were compared and analyzed.Results:The evoked rate of VEMPs was 100%. The latency of P1 and N1, P1-N1 interval of cVEMP in these pilots were (15.58±1.29), (26.12±1.91), and (10.54±1.49) ms. The latency of N1 and P1, P1-N1 interval of oVEMP in these pilots were (11.96±0.92), (16.92±1.06), and (4.96±0.75) ms. The difference of VEMPs amplitude before and after EMG correction was statistically significant ( Z=-17.30, -17.30, both P<0.001). The difference of amplitude asymmetry ratio of cVEMP before and after correction was statistically significant ( Z=-2.91, P=0.004), but the difference of amplitude asymmetry ratio of oVEMP before and after correction was not statistically significant ( P>0.05). Conclusions:This research sets up the normal range of VEMPs corrected by EMG in military pilots and provides a more accurate reference for medical selection of flying cadets and functional evaluation of the otolith organ and its conduction pathway.
