Conflicting visual-vestibular stimulation and vestibular nucleus activity in alert monkeys.

Experimental brain research ·Vol. 33 ·No. 2 ·1978-10-13 ·Pages 203-11

Waespe W, Henn V

Abstract

In alert Rhesus monkeys (Macaca mulatta) neuronal activity of vestibular nuclei was recorded during pure vestibular and conflicting visual-vestibular stimulation. Pure vestibular stimulation consisted of rotating the monkey about the vertical axis in complete darkness. During conflicting visual-vestibular stimulation the monkeys were rotated in the light within a vertically striped cylinder mechanically coupled to the turntable. The conflict is that although the monkey is accelerated, there is no relative movement between visual surrounding and the animal. In the conflict situation thresholds of neuronal modulation and of nystagmus were raised compared with those during pure vestibular stimulation. Nystagmus slow-phase velocity could always be dissociated from the neuronal activity, the nystagmus often being totally suppressed whereas the neuronal activity was only attenuated. This suggests a further information processing between vestibular and oculomotor nuclei in the generation of nystagmus.

MeSH Terms

Animals Eye Movements Haplorhini Macaca mulatta Motion Perception/physiology Neurons/physiology Photic Stimulation Rotation Vestibular Nuclei/physiology Vestibule, Labyrinth/physiology

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

Waespe W

Henn V

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26 references, click to expand

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Article Info

Journal

Experimental brain research

Abbr.

Exp Brain Res

ISSN

0014-4819

DOI

10.1007/BF00238060

Published

1978-10-13

Pages

203-11

Language

English

Region

Germany

NLM ID

0043312

Subset

External Links

PubMed source DOI: 10.1007/BF00238060 View journal details

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Conflicting visual-vestibular stimulation and vestibular nucleus activity in alert monkeys.

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