Topographical organization of the tecto-olivo-cerebellar projection in the cat.

Abstract:

:The superior colliculus sends a climbing fiber output to cerebellar vermal lobules VI-VII through the inferior olive. The present study in cats morphologically clarified the existence of a topographical organization in the tecto-olivo-cerebellar projection. A horseradish peroxidase study on the tecto-olivary projection showed that the rostral and caudal superior colliculus projected mostly contralaterally to the caudal and rostral areas of the caudomedial part of the medial accessory olive, respectively. The lateral superior colliculus was found to project more laterally than was the medial superior colliculus. Investigation on the olivocerebellar projection demonstrated that the rostral and caudal areas of the caudomedial part of the medial accessory olive sent climbing fiber terminals contralaterally to the lateral and medial parts of vermal lobules VI-VII, respectively. Thus, it was revealed that the rostral superior colliculus projected mostly to the medial part of ipsilateral vermal lobules VI-VII while the caudal superior colliculus projected mostly to the lateral part of ipsilateral vermal lobules VI-VII.

journal_name

Neuroscience

journal_title

Neuroscience

authors

Kyuhou S,Matsuzaki R

doi

10.1016/0306-4522(91)90212-7

subject

Has Abstract

pub_date

1991-01-01 00:00:00

pages

227-41

issue

1

eissn

0306-4522

issn

1873-7544

pii

0306-4522(91)90212-7

journal_volume

41

pub_type

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