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Effects of stimulation of peripheral nerves, the lateral reticular nucleus, and the inferior olive on fastigial neurons of the cat cerebellum

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Abstract

Activity of fastigial neurons was investigated during stimulation of peripheral nerves of the fore- and hind limbs and also of brain-stem nuclei — the lateral reticular nucleus and inferior olive, transmitting indirect peripheral impulses to the cerebellum, in cats under superficial pentobarbital anesthesia. Stimulation of the nerves was accompanied by excitation of most neurons tested, reflected in repeated discharges to a single stimulus. Three main groups of responses latencies were distinguished: Those corresponding to conduction of peripheral impulses along slow and (partly) fast spinocerebellar tracts were predominant. Stimulation of the lateral reticular nucleus and inferior olive was accompanied by mono- and polysynaptic, and also by antidromic activation of fastigial neurons. Monosynaptic and antidromic activation of neurons are regarded as evidence of the presence of direct reticulo-and olivofastigial projections and of feedback in the system of these inputs into the nucleus fastigius respectively.

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  1. A. S. Amatuni
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L. A. Orbeli Institute of Physiology, Academy of Sciences of the Armenian SSR, Erevan. Translated from Neirofiziologiya, Vol. 13, No. 2, pp. 168–178, March–April, 1981.

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Amatuni, A.S. Effects of stimulation of peripheral nerves, the lateral reticular nucleus, and the inferior olive on fastigial neurons of the cat cerebellum. Neurophysiology 13, 119–128 (1981). https://doi.org/10.1007/BF01058842

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  • DOI: https://doi.org/10.1007/BF01058842

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