Diagnostic tests
Vestibular Autorotation Test (VAT)
The vestibular autorotation test (VAT) measures how well the eyes and inner-ear balance system work together during active head movement.
What it is
The vestibular autorotation test (VAT) measures how well the eyes and inner-ear balance system work together during active head movement. They help evaluate dizziness, vertigo and imbalance.
How to prepare
Ask us which medications (such as sedatives or antihistamines) to pause beforehand. Avoid alcohol and caffeine for 24–48 hours if instructed, and skip eye makeup.
What to expect
Small sensors near the eyes record eye movements while you look at a target and turn your head side to side and up and down, at increasing speed. It takes about 15–30 minutes and may briefly cause mild dizziness.
This information is educational and does not replace a medical evaluation.