It involves the use of infrared goggles to trace eye movements during visual stimulation and positional changes .
Videonystagmography ( VNG ) is a technology for testing inner ear and central motor functions , a process known as vestibular assessment .
VNG involves the use of infrared goggles to trace eye movements during visual stimulation and positional changes .
Videonystagmography ( VNG ) is a technology for testing inner ear and central motor functions , a process known as vestibular assessment .