title: Head taps evoke a crossed vestibulo-ocular reflex.
abstract: Taps to the forehead on the midline, at the hairline (Fz), with a reflex hammer or powerful bone conduction vibrator caused short-latency surface potentials from beneath both eyes in all healthy subjects. The earliest negative responses were invariably absent from the eye contralateral to the side of a previous vestibular nerve section but were preserved despite sensorineural hearing loss. These responses probably reflect vestibular function via crossed otolith-ocular pathways.
authors.affiliation: Vestibular Research Laboratory, School of Psychology, University of Sydney, Sydney, NSW, Australia.
authors.forename: S
authors.initials: S
authors.lastname: Iwasaki
authors.forename: L A
authors.initials: LA
authors.lastname: McGarvie
authors.forename: G M
authors.initials: GM
authors.lastname: Halmagyi
authors.forename: A M
authors.initials: AM
authors.lastname: Burgess
authors.forename: J
authors.initials: J
authors.lastname: Kim
authors.forename: J G
authors.initials: JG
authors.lastname: Colebatch
authors.forename: I S
authors.initials: IS
authors.lastname: Curthoys
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004576:Electromyography / Q000379:methods*; D019054:Evoked Potentials, Motor; D005260:Female; D006257:Head / Q000294:innervation / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000503:physiopathology; D010808:Physical Examination / Q000379:methods*; D010812:Physical Stimulation / Q000379:methods*; D012027:Reflex, Vestibulo-Ocular; D015837:Vestibular Diseases / Q000175:diagnosis / Q000503:physiopathology*; D014724:Vestibular Function Tests / Q000379:methods*