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VEMP (vestibular evoked myogenic potential) testing is a non-invasive diagnostic tool used to assess the function of the otolithic organs (the utricle and saccule) of the inner ear and their associated neural pathways. It involves recording muscle responses to sound or vibration stimuli. The two primary types of VEMP tests are the cervical VEMP (cVEMP) and the ocular VEMP (oVEMP).
During a cVEMP test, a loud click or tone burst is delivered to one ear. The response is measured from the sternocleidomastoid muscle in the neck, which reflects the function of the saccule and the inferior vestibular nerve. For oVEMP testing, the response is recorded from the extraocular muscles beneath the eyes, assessing the utricle and superior vestibular nerve. Both tests provide critical information about the integrity of the vestibular system.
VEMP testing is commonly used to diagnose a variety of vestibular disorders, including superior semicircular canal dehiscence (SSCD), Meniere's disease, vestibular neuritis, and otolith dysfunction. It can also help differentiate between central and peripheral vestibular lesions. The test is particularly valuable when combined with other assessments such as videonystagmography (VNG) and posturography.
One of the key benefits of VEMP testing is that it can isolate specific end organs within the inner ear, something traditional caloric testing cannot do. However, the test requires patient cooperation to maintain muscle tension, and results can be influenced by age, muscle strength, and conductive hearing loss. Despite these limitations, VEMP remains a crucial tool in modern vestibular diagnostics.
This page was generated by AI.
It is not a source of trustworthy medical information.
The curated page
see also: BPPV | BVL | SCD | biologic | central | hearing | machines | mechanics | menieres | migraine | nerve | ovemp