Document Detail


Columnar organisation of the inferior olive projection to the posterior lobe of the rat cerebellum.
MedLine Citation:
PMID:  1705266     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The organisation of the olivocerebellar projection to lobules VI, VIII, and IX of the posterior lobe of the rat cerebellum was investigated in detail by using the retrograde tracer wheat germ agglutinin-horseradish peroxidase. Small, well-defined rostro-caudally orientated columns of olive cells were found to project to different parasagittal areas in the posterior lobe. A column of olive cells about 2,000 microns in rostro-caudal length in subnucleus "c" and nucleus beta of the caudal medial accessory olive (MAO) provides climbing fibre input to the most medial part of lobules VI and IX, but this projection is displaced laterally in lobule VIII by a projection from a column of cells about 600 microns in rostro-caudal length in lateral caudal MAO (subnucleus "a"). It is possible that each of these columns of olivary neurones may be further subdivided in the rostro-caudal axis so that different sections project to different medio-lateral parts of the cortex. A fine-grain 'sublobular' localisation may also exist: the projection to midline lobule VIc arises at caudal levels of the olive from a band of cells in the transition region between subnucleus "c" and nucleus beta, whilst by comparison the projection from caudal levels of the olive to lobules VIa and VIb arises from cells located more ventrally in nucleus beta. Evidence is also presented to confirm that the posterior lobe vermis in the rat extends further laterally than in other mammals and that part of it receives a projection from a column of olive cells, 1,000 microns in rostro-caudal length, in a newly defined region of caudal MAO, termed subnucleus "b1."
Authors:
R Apps
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of comparative neurology     Volume:  302     ISSN:  0021-9967     ISO Abbreviation:  J. Comp. Neurol.     Publication Date:  1990 Dec 
Date Detail:
Created Date:  1991-04-02     Completed Date:  1991-04-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0406041     Medline TA:  J Comp Neurol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  236-54     Citation Subset:  IM    
Affiliation:
Department of Physiology, School of Medical Sciences, University of Bristol, United Kingdom.
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MeSH Terms
Descriptor/Qualifier:
Animals
Cerebellum / anatomy & histology*
Horseradish Peroxidase
Male
Microinjections
Neural Pathways / anatomy & histology
Olivary Nucleus / anatomy & histology*
Rats
Rats, Inbred Strains
Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate
Wheat Germ Agglutinins
Chemical
Reg. No./Substance:
0/Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate; 0/Wheat Germ Agglutinins; EC 1.11.1.-/Horseradish Peroxidase

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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