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Ann Clin Neurophysiol > Volume 8(1); 2006 > Article
Ann Clin Neurophysiol. 2006; 8(1): 53-57.
Vestibular Evoked Myogenic Potentials inSupratentorial Infarction Patients
Kwang-Ki Kim, Seung Hwan Lee, Hong Seok Son, and Sung Hun Kim
Copyright © 2006 The Korean Society of Clinical Neurophysiology
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
ABSTRACT
Background: Vstibular evoked myogenic potentials VEMP) have been known to be useful documenting abnormality in patients with various vestibular disorders and brainstem lesions but the studies of VEMP in patients with hemispheric lesions are rare.

Methods: We recorded VEMP in 21 consecutive patients with acute ischemic stroke in the supratentorial lesions without evidence of brainstem or vestibular end organ lesions. All patients underwent magnetic resonance imaging and the main outcome measures of VEMP were recorded in all subjects. We interpreted each parameters of VEMP using our normal laboratory data.

Results: VEMP abnormalities(prolonged latency or asymmetry of amplitude) were found in 57%(12/21) of acute infarction patients with supratentorial lesions. Bilateral VEMP abnormalities were found in six patients and unilateral abnormalities were found in another six patients with ipsilateral abnormalitiesin the three and controlateral abnormalities in the three patients.

Conclusions: VEMP abnormalities were found in supratentorial stroke patients in our studies and this findings suggest supranuclear control may affect the generation of VEMP potentials.
Key words: Vestibular evoked myogenic potential, Supratentorial infarction
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