Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Videonystagmography (VNG) is a technology for testing inner ear and central motor functions, a process known as vestibular assessment. It involves the use of infrared goggles to trace eye movements during visual stimulation and positional changes. VNG can determine whether dizziness is caused by inner ear disease, particularly Benign Paroxysmal Positional Vertigo (BPPV), as opposed to some other cause such as low blood pressure or anxiety.

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