Assessment of otolith function using vestibular evoked myogenic potential

Seo Toru

doi:10.11289/otoljpn.32.189

<p>Vestibular evoked myogenic potential (VEMP) has been established as a functional assessment for the otolith organs. VEMP includes cervical VEMP—which is recorded in the ipsilateral sternocleidomastoid muscle to examine saccular function—and ocular VEMP—which is recorded just below the contralateral eyeball to examine utricular function. VEMPs have revealed some new findings. One finding is that the solo otolithic disorders cause sensation of linear motion on the plane where the macula is placed. In other words, the saccular and utricular lesions cause linear motion on the sagittal and horizontal planes, respectively. In addition, although the positional vertigo of benign paroxysmal positional vertigo disappears following positional therapies, such as Epley’s maneuver, some patients experience persistent dizziness even after successful treatment with positional therapy. The residual dizziness is related to the persistent utricular disfunction. It is interesting to note that these new findings are consistent with previously known physiologic facts. To date, VEMP is one of the essential examinations for a comprehensive study of vestibular function.</p>

Assessment of otolith function using vestibular evoked myogenic potential

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