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Videonystagmography (VNG) Test

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Balance & Dizziness 

Our Doctors of Audiology and Physical Therapy will utilize state-of-the-art equipment to diagnose and treat balance and vestibular disorders. The vestibular system is located in the inner ear and is responsible for balance. A disorder in the vestibular system causes difficulties with balance and movement, often resulting in dizziness and/or vertigo. Our Doctors of Audiology and Physical Therapy are specifically trained in treating imbalance and combating dizziness in patients. Learn More about dizziness here. 

Videonystagmography (VNG) Test at East Coast Audiology and Physical Therapy

The Videonystagmography (VNG) test is a comprehensive, four-part evaluation used to diagnose vestibular disorders, providing critical insights into issues related to dizziness, vertigo, and balance. This test allows our audiologists to thoroughly examine the vestibular system to pinpoint the causes of your symptoms and determine the most effective treatment plan.

Here are the Components of the VNG Test

1. Positional Testing

  • This part of the test assesses if you have Benign Paroxysmal Positional Vertigo (BPPV) and identifies involuntary eye movements called nystagmus. By moving your head and body into different positions, we can observe any nystagmus and determine its impact on your balance.

2. Ocular Motility Testing

  • Ocular motility testing evaluates how well your vestibular systems coordinate with each other and tracks your eyes' ability to follow moving objects. This helps us understand the overall functionality of your vestibular system.

3. Caloric Testing

  • During caloric testing, warm and cool air are introduced into each ear to assess the functionality and symmetry of your vestibular system. This part of the test checks for inner ear nerve damage by comparing the responses from both ears. A weaker or absent response in one ear indicates potential damage.

4. Posturography

  • Posturography examines the three systems that contribute to your balance: somatosensory, vestibular, and oculomotor. This test helps identify which system may be affecting your balance and guides us in developing an appropriate treatment plan.

​When to Consider a VNG Test

You may need a VNG test if you experience:


  • Dizziness or imbalance

  • Ringing in the ears (tinnitus)

  • Confusion or involuntary eye movements

At East Coast Audiology and Physical Therapy, our expert team is dedicated to helping you find the root cause of your symptoms and providing the best possible care. If you are experiencing any of these issues, contact us to schedule your VNG test today.

We strongly recommend that you have someone accompany you to the appointment should you experience dizziness or other symptoms from the testing. 

Part of our Vestibular Assessment Includes




Nerves and Muscles



All parts of the Triangle have to work in order for your Vestibular System to function properly. 

Important Guidelines for your VNG Test

  • Do not take any medication for 48 hours prior to the test. This WILL impact the test results, and we WILL need to RESCHEDULE the appointment. "Maintenance" medications are not required to be stopped (i.e., blood pressure, heart medication, diabetes meds, or anything your physician deems necessary.) Consult your physician before stopping any medications. 

  • Do not wear any perfume or makeup (especially eye makeup) the day of the test. Long hair should be pulled up out of the face. Do NOT wear contact lenses. 

  • Wear loose fitting, comfortable clothing.

  • Do not drink any alcohol for 48 hours prior to the test. Do not smoke the day of the test. 

  • Do not drink any caffeinated beverages (i.e coffee, soda, energy drinks, or tea) for 12 hours prior to the test. 

  • Do not eat for 4 hours prior to the test. If absolutely necessary for medical reasons, you may eat a light meal.

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