title: The horizontal computerized rotational impulse test.
abstract: Whole-body impulsive rotations were used to overcome several limitations associated with manual head impulse testing. A computer-controlled rotational chair delivered brief, whole-body, earth-vertical axis yaw impulsive rotations while eye movements were measured using video-oculography. Results from an unselected group of 20 patients with dizziness and a group of 22 control subjects indicated that the horizontal computerized rotational head impulse test (crHIT) is well-tolerated and provides an estimate of unidirectional vestibulo-ocular reflex gain comparable to results from caloric testing. This study demonstrates that the horizontal crHIT is a new assessment tool that overcomes many of the limitations of manual head impulse testing and provides a reliable laboratory-based measure of unilateral horizontal semicircular canal function.
authors.affiliation: Department of Otolaryngology, University of Pittsburgh, PA, USA.
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Furman
authors.affiliation: Neuro-kinetics Inc., Pittsburgh, PA, USA.
authors.forename: Ian
authors.initials: I
authors.lastname: Shirey
authors.affiliation: Department of Otolaryngology, University of Pittsburgh, PA, USA.
authors.forename: Jillyn
authors.initials: J
authors.lastname: Roxberg
authors.affiliation: Neuro-kinetics Inc., Pittsburgh, PA, USA.
authors.forename: Alexander
authors.initials: A
authors.lastname: Kiderman
mesh_terms: D000054:Acceleration; D000328:Adult; D003936:Diagnosis, Computer-Assisted; D004244:Dizziness / Q000175:diagnosis / Q000503:physiopathology; D005133:Eye Movements; D005260:Female; D064087:Head Impulse Test / Q000295:instrumentation* / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D012027:Reflex, Vestibulo-Ocular; D012399:Rotation; D012665:Semicircular Canals / Q000503:physiopathology; D015837:Vestibular Diseases / Q000175:diagnosis / Q000503:physiopathology; D014724:Vestibular Function Tests / Q000295:instrumentation* / Q000379:methods; D055815:Young Adult
keywords: Vestibulo-ocular reflex; head impulse testing; semicircular canal