Bifurcating projections from the cerebellar fastigial neurons to the thalamic suprageniculate nucleus and to the superior colliculus

A double-labeling fluorescence microscopic study was performed on the mesencephalic and thalamic distribution of fastigial efferents. Anesthetized cats were injected with 2% fast blue into the suprageniculate nucleus and with 0.5% nuclear yellow into the superior colliculus. Analysis of serial secti...

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Bibliographic Details
Published in:Brain research 2000-05, Vol.864 (2), p.308-311
Main Authors: Katoh, Yoshimitsu Yuki, Arai, Ryohachi, Benedek, György
Format: Article
Language:English
Subjects:
Amidines
Animals
Benzimidazoles
Cats
Cerebellar Nuclei - cytology
Cerebellum
Colliculus superior
fastigial nucleus
Fluorescence microscope
Fluorescent Dyes
Geniculate Bodies - cytology
Microscopy, Fluorescence
Neurons - physiology
Superior Colliculi - cytology
suprageniculate nucleus
Thalamus
Vision
Visual Pathways
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Summary:A double-labeling fluorescence microscopic study was performed on the mesencephalic and thalamic distribution of fastigial efferents. Anesthetized cats were injected with 2% fast blue into the suprageniculate nucleus and with 0.5% nuclear yellow into the superior colliculus. Analysis of serial sections through the cerebellar fastigial nucleus revealed that 25% of the neurons projecting to the superior colliculus and 10% of those projecting to the thalamus were double labeled. The results suggest that bifurcating fastigial fibers to the mesencephalon and to the visual thalamus may play a role in cerebellar visual control.
ISSN:0006-8993
1872-6240
DOI:10.1016/S0006-8993(00)02156-9