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Videonystagmography (VNG)

VNG: A test to better understand your dizziness

Videonystagmography (VNG) is a test that measures eye movements to evaluate the function of the vestibular system—the part of the inner ear responsible for balance.
It records involuntary, oscillatory eye movements (called nystagmus) to help detect possible balance disorders and determine whether your symptoms are related to the vestibular system, the nerves, or the brain. This information guides the choice of the most appropriate treatment.

Why take a VNG test?

A VNG is recommended if you experience:

  • Dizziness or a sensation that your surroundings are spinning;
  • A feeling of falling or frequent loss of balance.

VNG results help diagnose:

  • Benign Paroxysmal Positional Vertigo (BPPV);
  • Ménière’s disease or vestibular migraine;
  • Labyrinthitis or vestibular neuritis;
  • Perilymph fistula.

If results are abnormal, additional tests may be recommended to confirm the diagnosis and identify the best treatment plan.

Our Approach:

The test is performed in a few simple steps:

  • Oculomotor tests: Measure how well your eyes can stay still, follow a moving target smoothly, and move without involuntary quick jumps (saccades);
  • VPPB assessment: Your head and body are positioned in different ways to observe your eye reactions and detect positional vertigo (BPPV). ;
  • Caloric test: Each ear is alternately stimulated with warm and cool air or water. This activates the vestibular system and temporarily creates a sensation of motion and involuntary eye movements (nystagmus).
    The test is quick, safe, and performed by an audiologist. Some temporary dizziness may occur but disappears shortly after.ialist in case of a complex situation or one requiring more extensive follow-up.

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