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Head-shake vestibulo-ocular reflex testing: comparison of results with rotational chair testing. 1995

J A Goebel, and J M Hanson, and L R Langhofer, and D G Fishel
Department of Otolaryngology-Head and Neck Surgery, Washington University School of Medicine, St. Louis, MO 63110.

The currently accepted "gold standard" for rotational testing of the vestibulo-ocular reflex uses a servo-controlled chair for sinusoidal whole-body rotation. Previous work in our laboratory has shown good concordance between conventional rotational chair testing and head-on-body (or "head-shake") testing for gain and phase values of the vestibulo-ocular reflex as recorded and analyzed on our rotational chair system's software. In this article we describe results obtained from 10 normal subjects and 20 patients with reduced caloric responses using a portable system being developed in our laboratory that allows an examiner to generate both whole-body and head-on-body rotational stimuli. Test frequencies within the range 0.25 to 1.0 Hz were chosen for comparison with results obtained by conventional rotational chair testing. Visual conditions for all tests included both visually enhanced vestibulo-ocular reflex (real earth-fixed target) and mentally enhanced vestibulo-ocular reflex (imagined earth-fixed target, in darkness or with vision obscured) paradigms. Our results show general agreement between head-shake and rotational chair testing and both manual whole-body rotation and head-shake testing on our portable system for vestibulo-ocular reflex gain and phase testing, with the largest differences noted at 1.0 Hz. Portable rotational testing was well tolerated by young and elderly subjects alike. We expect manual whole-body rotation and head-shake testing will be useful adjuncts for examining vestibulo-ocular reflex function when more formal rotational chair testing is not possible.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009068 Movement The act, process, or result of passing from one place or position to another. It differs from LOCOMOTION in that locomotion is restricted to the passing of the whole body from one place to another, while movement encompasses both locomotion but also a change of the position of the whole body or any of its parts. Movement may be used with reference to humans, vertebrate and invertebrate animals, and microorganisms. Differentiate also from MOTOR ACTIVITY, movement associated with behavior. Movements
D009760 Nystagmus, Physiologic Involuntary rhythmical movements of the eyes in the normal person. These can be naturally occurring as in end-position (end-point, end-stage, or deviational) nystagmus or induced by the optokinetic drum (NYSTAGMUS, OPTOKINETIC), caloric test, or a rotating chair. Nystagmus, Barany,Nystagmus, Caloric,Nystagmus, End-Position,Nystagmus, Positional,Nystagmus, Post-Rotatory,Nystagmus, Thermal,Nystagmus, Barany's,Nystagmus, Physiological,Physiologic Nystagmus,Barany Nystagmus,Barany's Nystagmus,Caloric Nystagmus,End-Position Nystagmus,Nystagmus, Baranys,Nystagmus, End Position,Nystagmus, Post Rotatory,Physiological Nystagmus,Positional Nystagmus,Post-Rotatory Nystagmus,Thermal Nystagmus
D012027 Reflex, Vestibulo-Ocular A reflex wherein impulses are conveyed from the cupulas of the SEMICIRCULAR CANALS and from the OTOLITHIC MEMBRANE of the SACCULE AND UTRICLE via the VESTIBULAR NUCLEI of the BRAIN STEM and the median longitudinal fasciculus to the OCULOMOTOR NERVE nuclei. It functions to maintain a stable retinal image during head rotation by generating appropriate compensatory EYE MOVEMENTS. Vestibulo-Ocular Reflex,Reflex, Vestibuloocular,Reflexes, Vestibo-Ocular,Reflexes, Vestibuloocular,Reflex, Vestibulo Ocular,Reflexes, Vestibo Ocular,Vestibo-Ocular Reflexes,Vestibulo Ocular Reflex,Vestibuloocular Reflex,Vestibuloocular Reflexes
D002150 Caloric Tests Elicitation of a rotatory nystagmus by stimulating the semicircular canals with water or air which is above or below body temperature. In warm caloric stimulation a rotatory nystagmus is developed toward the side of the stimulated ear; in cold, away from the stimulated side. Absence of nystagmus indicates the labyrinth is not functioning. Barany Test,Barany's Test,Baranys Test,Caloric Test,Test, Barany,Test, Barany's,Test, Caloric,Tests, Caloric
D004244 Dizziness An imprecise term which may refer to a sense of spatial disorientation, motion of the environment, or lightheadedness. Lightheadedness,Orthostasis,Dizzyness,Light-Headedness,Light Headedness
D004585 Electrooculography Recording of the average amplitude of the resting potential arising between the cornea and the retina in light and dark adaptation as the eyes turn a standard distance to the right and the left. The increase in potential with light adaptation is used to evaluate the condition of the retinal pigment epithelium. EOG,Electrooculograms,Electrooculogram
D005260 Female Females
D006257 Head The upper part of the human body, or the front or upper part of the body of an animal, typically separated from the rest of the body by a neck, and containing the brain, mouth, and sense organs. Heads

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