ENG testing is used to find the cause of a person’s dizziness. Electrodes are taped around the eyes to detect jerky eye movements. We use a newer technology, called videonystagmography (VNG), which employs infrared video signals to detect eye movements. Problems with the ear or central vestibular (brain) systems can be detected. The test takes a little over an hour and must be performed without the influence of medication that suppresses dizziness.
In addition to VNG, balance can be evaluated by standing up and using different feedback conditions.
For example, you might be asked to stand up and stay still with your eyes open at one time and with eyes closed at another time. Under another condition, you may be asked to stand on an unsteady surface (a foam pad or slightly tilted surface), again with eyes open versus eyes closed.