A VNG test is a test of your vestibular system used to determine the cause of dizziness or imbalance. It measures whether the dizziness and/or imbalance is due to a condition of the inner ear. It uses recordings of eye movements (nystagmus) to assess function of the vestibular system. For more about what to expect during a VNG test you can read here.
Everyday Hearing > Videonystagmography (VNG)