Videonystagmography testing is a series of tests designed to document a person’s ability to follow visual objects with their eyes and how well the eyes respond to information from the vestibular system. This test also addresses the functionality of each ear and if a vestibular deficit may be the cause of a dizziness or balance problem. VNG includes a series of tests used to determine whether a vestibular (inner ear) disease may be causing a balance or dizziness problem; VNG can differentiate between a central and a peripheral vestibular lesion, and, if peripheral, it can decipher between unilateral (one ear) and bilateral (both ears) vestibular loss and confirm benign peripheral positional vertigo.

During the Vertigo test you sit with your legs extended on the examination table.

Your doctor watches your eyes for involuntary eye movements (called nystagmus) after you sit upright for a few minutes to recover from the vertigo, the procedure is repeated with your head turned in the opposite direction.