The otoliths and the ocular countertorsion reflex.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005133:Eye Movements; D005260:Female; D006257:Head / Q000502:physiology*; D006801:Humans; D007759:Labyrinth Diseases / Q000175:diagnosis; D008297:Male; D008722:Methods; D008875:Middle Aged; D009333:Neck / Q000502:physiology; D010781:Photography; D012018:Reflex; D012399:Rotation; D012665:Semicircular Canals / Q000502:physiology*; D014717:Vertigo / Q000175:diagnosis; D014724:Vestibular Function Tests / Q000295:instrumentation