Training in VNG

Performing Dix Hallpike testing (VNG)

10 mins
28 November 2022


The Dix Hallpike test is the most well known positioning test as it is used to diagnose posterior canal BPPV, the most common variant of BPPV. There are other positioning tests and diagnostic movements but understanding the Dix Hallpike is the first step.

The video shows a patient undergoing a Dix Hallpike examination using VNG goggles.


Michelle Petrak
Michelle Petrak, Ph.D., is the Director of Clinical Audiology and Vestibular Research for Interacoustics. Her primary role is development and clinical validation of new technologies in the vestibular and balance areas. She is located in Chicago where she is a licensed private practice clinical audiologist at Northwest Speech and Hearing (NWSPH). Dr. Petrak received her doctorates in Electrophysiology (1992) and Biomolecular Electronics (1994) from Wayne State University and her Masters in Audiology in 1989. Her special areas of expertise include vestibular and balance assessments and management of the dizzy patient. Dr. Petrak is involved with new innovative product developments, clinical evaluations of new protocols, and publishing, teaching, and training on the management of patients with dizziness. She continues to lecture extensively nationally and internationally, and she has numerous articles published in the hearing industry journals. She also participates on the committees for several doctoral students as support for the research projects.

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Interacoustics - hearing and balance diagnosis and rehabilitation
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