neurologist performing positional testing of patient using videonystagmography . vng testing uses goggles with infrared cameras to

epley maneuver neurologist patient bppv dizziness vertigo vng videonystagmography electronystagmography benign paroxysmal positional dppg doctor vestibular neuritis brain chronic symptoms ent spinning nausea vomiting labyrinthitis tumor balance problem medicine rehabilitation training vrt otolaryngologist ear menier disease syndrome dizzy clinic hospital treat diagnosing test goggles infrared cameras tracking eye movement otholit peripheral central oculomotor copy space