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Pyramidal input to the intracerebellar nuclei of the cat.

Abstract：

:In unanesthetized cats it has been found that pyramidal volleys elicited upon medullary pyramidal tract stimulation were capable of modifying the discharge of 41% of intracerebellar nuclear cells, via pontocerebellar systems impinging predominantly on the lateral cerebellar cortex. The incidence of responsive cells was 80% in the dentate nucleus compared with 10% in the fastigial nucleus, 11% in the anterior and 12% in the posterior division of the interpositus nucleus. The response was in 59% of the cases excitation followed by inhibition, in 30% of the cases a pure excitation and in 11% of the cases a pure inhibition. Excitation, pure or followed by inhibition, had a mean latency of 5.78 ms and a mean duration of 12.21 ms, while inhibition displayed a mean latency of 9.03 ms and a mean duration of 34.64 ms. The possible functional significance of the pyramidal input to the lateral cerebellum is briefly discussed in relation to a possible convergence of pyramidal and associative impulses in single cerebellar neurons.

journal_name

Neuroscience

journal_title

Neuroscience

authors

Giuffrida R,Licata F,Li Volsi G,Perciavalle V,Urbano A

doi

10.1016/0306-4522(83)90304-4

subject

Has Abstract

pub_date

1983-06-01 00:00:00

pages

421-7

issue

2

eissn

0306-4522

issn

1873-7544

pii

0306-4522(83)90304-4

journal_volume

9

pub_type

杂志文章

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