Cross-coupled Effects of Repeated Vestibular and Optokinetic Stimulations on the Dynamics of the Vestibulo-ocular and Optokinetic Reflexes in the Cat

Overview

Journal Exp Brain Res

Specialty Neurology

Date 1988 Jan 1

PMID 3261255

Citations 2

Authors

A Buizza

J H Courjon

J M Flandrin

R Schmid

Affiliations

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Abstract

Cats were submitted to repeated step stimulations either vestibular or optokinetic. Regardless of which of the two stimuli was used, dynamic modifications were observed in both vestibulo-ocular response and optokinetic after-nystagmus (OKAN). The progressive changes in post-rotational nystagmus and OKAN were quantified by measuring the duration of their primary phase. A parallel evolution of these two parameters was found. When repeated unidirectional vestibular stimulations were used, the same asymmetry was induced in both vestibuloocular responses and OKAN. These results support the hypothesis that the vestibulo-ocular and the optokinetic reflex share a common velocity storage mechanism, although alternative hypotheses cannot be excluded.

Citing Articles

Longterm impairment of cat optokinetic nystagmus following visual cortical lesions.

Flandrin J, Courjon J, Orban G, SPRAGUE J Exp Brain Res. 1992; 88(3):594-608.

PMID: 1587317 DOI: 10.1007/BF00228188.

Habituation and adaptation of the vestibuloocular reflex: a model of differential control by the vestibulocerebellum.

Cohen H, Cohen B, Raphan T, Waespe W Exp Brain Res. 1992; 90(3):526-38.

PMID: 1426111 DOI: 10.1007/BF00230935.

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