Cervical Vestibular Myogenic Potential (cVEMP)

What Is cVEMP?

Cervical vestibular evoked myogenic potential (cVEMP) testing evaluates vestibular function by measuring muscle responses in the neck following sound stimulation delivered through earphones. Electrodes placed on the skin record these responses, providing information about the function of the saccule and inferior vestibular nerve.

Because cVEMP evaluates a different part of the balance system than videonystagmography (VNG), the two tests may be used together to provide a more complete assessment of vestibular function.

Who May Benefit?

Your healthcare provider may recommend cVEMP testing as part of an evaluation for:

• Dizziness, vertigo, or unsteadiness
• Suspected superior semicircular canal dehiscence (SSCD)
• Dizziness triggered by loud sounds or pressure changes
• Certain inner-ear or vestibular nerve disorders

What to Expect

Before testing, the audiologist will gently prepare the skin using an alcohol wipe and electrode gel to help ensure good electrode contact. Electrodes are then placed on the skin of your neck and forehead.

While sitting upright, you will be asked to turn your head to activate your neck muscles while listening to clicks or tones through earphones. The electrodes record your muscle responses during the test.

cVEMP testing is noninvasive and generally painless. The appointment typically takes about 45–60 minutes.

How to Prepare

No special preparation is usually required before your appointment. Please let us know if you have neck problems or difficulty moving your neck. Wear comfortable clothing that allows easy access to your neck.