Cervical and ocular vestibular-evoked myogenic potentials in acute
- Alternative Author(s)
- Lee, Hyung
- Publication Year
- Objectives: To clarify the origin and afferent pathways of short-latency ocular vestibular-evoked
myogenic potential (oVEMP) in response to air-conducted sound (ACS), we evaluated cervical (cVEMP)
and ocular VEMPs in patients with vestibular neuritis (VN).
Methods: In response to air-conducted tone burst, the oVEMP and cVEMP were measured in 60 healthy
controls and in 41 patients with acute VN. The VN selectively involved the superior vestibular nerve
(superior VN) in 30 patients, affected the inferior vestibular nerve only (inferior VN) in three and damaged
both superior and inferior vestibular nerve branches in eight.
Results: All 30 patients with superior VN presented normal cVEMPs, indicating preservation of the saccular
receptors and their afferents in the inferior vestibular nerve. However, the oVEMP was abnormal in all
patients with superior VN. By contrast, the patients with inferior VN showed normal oVEMP and abnormal
Conclusion: These dissociations in the abnormalities of cVEMP and oVEMP in patients with VN selectively
involving the superior or inferior vestibular nerve suggest that the origin of the vestibular nerve afferents
of oVEMP differ from those of cVEMP.
Significance: The oVEMP in response to ACS may be mediated by the superior vestibular nerve, probably
due to an activation of the utricular receptors.
2011 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All rights
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