Cervical Vestibular-Evoked Myogenic Potentials Using Vibration and Sound in Normal Subjects.
10.3342/kjorl-hns.2011.54.3.192
- Author:
Bo Ra NA
1
;
Soo Hee HAN
;
Eun Jung HA
;
Yeo Jin LEE
;
Mun Su PARK
;
Jae Myung KIM
;
Jung Eun SHIN
;
Hong Ju PARK
Author Information
1. Department of Otorhinolaryngology-Head and Neck Surgery, Konkuk University School of Medicine, Seoul, Korea. hpark@kuh.ac.kr
- Publication Type:Original Article
- Keywords:
Cervical vestibular evoked myogenic potentials;
Vestibule;
Vibration
- MeSH:
Dizziness;
Ear;
Electrodes;
Hearing;
Humans;
Incidence;
Muscles;
Vestibular Evoked Myogenic Potentials;
Vibration
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
2011;54(3):192-196
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND AND OBJECTIVES: The aim of this study was to investigate and compare the incidence and the characteristics of parameters of cervical vestibular-evoked myogenic potentials (cVEMPs) using air-conducted (AC) and bone-conducted (BC) stimulations in normal subjects. SUBJECTS AND METHOD: Twenty-four normal subjects (48 ears) with normal hearing and no previous history of dizziness were included. cVEMP responses were recorded by surface electrodes on sternocleidomastiod muscles in response to AC and BC stimuli sequentially. Variances of parameters, including thresholds, amplitudes and interaural amplitude difference ratios (IADR), were analyzed and compared. RESULTS: cVEMP responses were clearly observed in all 48 ears in both AC and BC cVEMP tests. There was no significant difference in latencies (p1 and n1). However, the thresholds in BC cVEMP testing were significantly lower than those in AC cVEMP testing, when compared to the maximum stimulation level. Interaural amplitude difference ratios showed no significant difference in between the two tests, although amplitudes at maximum stimulation intensity in BC cVEMP testing were significantly larger than those in AC cVEMP testing. CONCLUSION: This study shows that BC cVEMP testing shows lower thresholds compared to AC cVEMP testing in normal subjects, suggesting that the threshold value can be used as a parameter in detecting vestibular dysfunction in the clinic. Further studies in patients with various vestibular disorders are needed.
