Electronystagmography Test

This is a test that is used to look at involuntary rapid eye movement. Sometimes the eyes will move from side to side or up and down very rapidly without the person making this happen. In a normal person, nystagmus (involuntary rapid eye movement) will occur during certain stimuli. For example, if cold water (a stimulus) is shot into a normal person's ear, they will develop nystagmus. If nystagmus does not occur, this often indicates a tumor, an infection, a low blood supply, or other problems. This test is also used to determine possible problems in the different parts of the brain.


  • Do not apply facial makeup before test because this may interfere with the electrodes that are taped onto the sides of the face.

  • Avoid solid food before test to decrease the possibility of vomiting.

  • Do not drink caffeine or alcohol 24-48 hours prior to test.

  • Some medications may be held, due to the possibility of interference with the test, if instructed by your caregiver.


  • Normal nystagmus response.

  • Normal oculovestibular reflex.

Ranges for normal findings may vary among different laboratories and hospitals. You should always check with your doctor after having lab work or other tests done to discuss the meaning of your test results and whether your values are considered within normal limits.


Your caregiver will go over the test results with you and discuss the importance and meaning of your results, as well as treatment options and the need for additional tests if necessary.


It is your responsibility to obtain your test results. Ask the lab or department performing the test when and how you will get your results.