PMID: 6973961Jan 1, 1981Paper

Vestibulo-ocular reflex (VOR), cervico-ocular reflex (COR) and its interaction in active head movements

Archiv für Psychiatrie und Nervenkrankheiten
M DoerrU Thoden

Abstract

In normal adults the vestibulo-ocular reflex (VOR) and the cervico-ocular reflex (COR) were investigated during passive and active head or body movements, respectively. Sinusoidal rotations around the vertical axis of the body at frequencies of 0.05, 0.1, and 0.2s-1 and total amplitudes of 20 degrees, 40 degrees, 60 degrees, or 80 degrees were employed. The average eye deviations (Schlagfeld) during VOR were directed opposite to the direction of the head turning. During COR, however, slow eye deviations of higher amplitude were anticompensatory relative to the fixed head. During active head turnings the average eye deviations showed the same anticompensatory direction as in COR, but were still larger. The increased with stimulus amplitudes up to 60 degrees. At least a weak cervical nystagmus was elicited in all subjects, with its fast phases beating in the direction of the relative head movement. Its gain reached marked values up to 0.5, but only for peak stimulus velocities below 25%. The nystagmus gain during active head turnings was only slightly higher than during VOR. With higher stimulus velocities, large anticompensatory saccades appeared just before the change of stimulus direction; these are typical for active head mov...Continue Reading

References

Jan 1, 1979·Acta Oto-laryngologica·G R Barnes, L N Forbat
Jan 1, 1979·Progress in Brain Research·U Thoden, D Wenzel
Mar 19, 1973·Experimental Brain Research·P MorassoJ Dichgans
Jan 1, 1974·Acta Oto-laryngologica·N G HenrikssonO Tjernström
Jan 1, 1969·Brain : a Journal of Neurology·A Biemond, J M De Jong
Jun 1, 1971·The Annals of Otology, Rhinology, and Laryngology·S Takemori, J I Suzuki
May 1, 1980·Acta Oto-laryngologica·D Barlow, W Freedman

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Citations

Jan 1, 1989·Experimental Brain Research·R Jürgens, T Mergner
Jan 1, 1989·Archives of Oto-rhino-laryngology·M Doerr, U Thoden
Jan 1, 1982·Archiv für Psychiatrie und Nervenkrankheiten·H C LeopoldU Thoden
Jan 1, 1983·Archiv für Psychiatrie und Nervenkrankheiten·H C LeopoldU Thoden
May 29, 2012·Journal of Manipulative and Physiological Therapeutics·Yin-Chou LinShih-Wei Chou
Jan 1, 1995·Acta Oto-laryngologica. Supplementum·A A MeulenbroeksM P Vermeulen
Jan 1, 1989·Acta Oto-laryngologica. Supplementum·S HoltmannH Scherer
Jul 1, 1983·Acta Oto-laryngologica·U ThodenH C Leopold
Jan 1, 1985·Acta Oto-laryngologica·H C LeopoldU Thoden

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