The Clinical Significance of Vestibular Evoked Myogenic Potential Evoked by Click Sound.
- Author:
Sang Hoon PARK
1
;
Chang Il CHA
;
Kwang Hoon KIM
;
Hoon KIM
;
Myoung Gu HWANG
;
Nam Pyo HONG
Author Information
1. Department of Otolaryngology, College of Medicine, Kyung-Hee University, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Vestibular evoked myogenic potential;
Vestibulopathy;
Sternocleidomastoid muscle
- MeSH:
Acoustics;
Caloric Tests;
Cochlea;
Healthy Volunteers;
Hearing Loss, Sensorineural;
Humans;
Reflex;
Saccule and Utricle
- From:Korean Journal of Otolaryngology - Head and Neck Surgery
2001;44(12):1253-1258
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND AND OBJECTIVES: The human vestibule is known to be able to induce cervical muscle potential secondary to strong acoustic stimulations. This reflex is assumed to originate in the saccule, and is called "vestibular evoked myogenic potentials" (VEMP). The responses consist of alternatively positive and negative successive waves (p13-n23). This study was designed to evaluate the clinical significance of VEMP. MATERIALS AND METHOD: We studied the difference among the latencies of p13, n23 and the amplitudes among the 10 normal volunteers, 5 patients with sudden sensorineural hearing loss and 10 patients with vestibulopathy. And we compared the result of the caloric test and VEMP in patients with vestibulopathy. RESULTS: In the normal group, VEMP was detected in all and all of the sudden sensorineural hearing loss patients showed VEMP both in the affected and unaffected side. In unilateral vestibulopathy patients, VEMP were present in the unaffected side but not in the affected side. The difference between the amplitudes and latencies were not found in those cases where VEMP was detected. In vestibulopathy patients, VEMP were well correlated with the result of the caloric tests. CONCLUSION: We confirmed that VEMP is originated from the vestibule, not from cochlea. VEMP could provide itself as an addition method for testing the vestibule.
