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Ethanol-Induced Vestibular Dysfunction as a Model for Bilateral Vestibular Syndrome: Similarities in Video Head Impulse Test and Video-Oculography Data.
J Int Adv Otol
October 2023
Department of Otorhinolaryngology - Head and Neck Surgery, Turku University Hospital and University of Turku, Turku, Finland.
Background: The goal of this study was to compare video head impulse test, video-oculography, and clinical balance test changes induced by ethanol consumption, in order to acquire a model for acute bilateral vestibular syndrome.
Methods: Four healthy adult men and 5 healthy adult women were recruited as volunteers in the study. Initial video head impulse test, videooculography, and clinical balance test examinations were made.
Vestibular, optokinetic, and cognitive contribution to the guidance of passive self-rotation toward instructed targets.
Exp Brain Res
July 2003
Sektion Neurophysiologie, Universität Ulm, Albert-Einstein-Allee 47, 89081, Ulm, Germany.
We ask how vestibular and optokinetic information is combined ("fused") when human subjects who are being passively rotated while viewing a stationary optokinetic pattern try to tell when they have reached a previously instructed angular displacement ("targeting task"). Inevitably such a task entices subjects to also draw on cognitive mechanisms such as past experience and contextual expectations. Specifically, because we used rotations of constant angular velocity, we suspected that they would resort, consciously or unconsciously, to extrapolation strategies even though they had no explicit knowledge of this fact.
View Article and Find Full Text PDFOptokinetic nystagmus thresholds of dark-adapted RCS rats.
Vision Res
March 1989
Department of Ophthalmology, Children's Hospital, Boston, MA.
The thresholds of dark adapted RCS rats and controls were estimated from optokinetic responses to blue stimuli, and compared to thresholds derived from b-wave stimulus/response functions. The rats were tested at ages 25, 30 and 35 days, a period during which the RCS degeneration is evolving and normal retinal development is proceeding. At all ages the OKN thresholds of control rats were lower than those of the RCS rats, but only by age 30 days did b-wave thresholds discriminate RCS from controls.
View Article and Find Full Text PDFProceedings of the seminar on sinusoidal harmonic acceleration and computerized optokinetic tracking tests.
Ann Otol Rhinol Laryngol Suppl
November 1981
Morphological study of the optokinetic test in school children [proceedings].
Act Nerv Super (Praha)
December 1977
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