Neuronal mechanisms of interaction of Deiters nucleus with the cerebral cortex

The effects of stimulation of the vestibular nerve and five different cerebral cortex areas on the neuronal activity of the lateral vestibular nucleus of Deiters were studied. Stimulation of the cerebral cortex is shown to lead to antidromic and synaptic activation of Deiters neurons. The synaptic p...

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Bibliographic Details
Published inArchives italiennes de biologie Vol. 130; no. 2; p. 113
Main Authors Sarkisian, V H, Fanardjian, V V
Format Journal Article
LanguageEnglish
Published Italy 01.03.1992
Subjects
Action Potentials - physiology
Animals
Cats
Cerebral Cortex - physiology
Electric Stimulation
Neurons - physiology
Vestibular Nerve - physiology
Vestibular Nucleus, Lateral - physiology
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Summary:The effects of stimulation of the vestibular nerve and five different cerebral cortex areas on the neuronal activity of the lateral vestibular nucleus of Deiters were studied. Stimulation of the cerebral cortex is shown to lead to antidromic and synaptic activation of Deiters neurons. The synaptic potentials of Deiters neurons evoked from the cerebral cortex were of mono- and polysynaptic origin. In particular, stimulation of the cerebral cortex evoked in Deiters neurons mono- and polysynaptic excitatory postsynaptic potentials. Collaterals of vestibulospinal neurons reaching different cortex fields as well as convergence of influences from these cortex fields on Deiters neurons were revealed. Inhibitory effects of the cerebral cortex on Deiters neurons were of polysynaptic origin and occurred rarely. The topical correlation between Deiters nucleus and different areas of the cerebral cortex was found. The peculiarities and functional significance of the effects obtained are discussed.
ISSN:0003-9829