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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
2006-7-31
pubmed:abstractText
The central nucleus of the inferior colliculus (CNIC) contains different types of neurons and is a source of ascending projection to the medial geniculate body (MGB), commissural projection to the contralateral IC, direct descending projection to the cochlea nucleus (CN) and indirect projection to the CN via the superior olivary complex (SOC). Using a retrograde tracing technique, we examined what kind of neurons and what percentage of neurons of each type recognized in the CNIC participated in the above-mentioned four projection pathways. We also examined whether the individual CNIC neurons send the collateral to the MGB, the contralateral IC, the CN and the SOC. In the present study, we demonstrated that the neurons participating in the four projections could be morphologically classified into two types of neurons with soma size variation. The percentages of neurons of each type differed among the four projection pathways. Using a double-labeling technique, we found very few double-labeled neurons, indicating the collateral projections to the ipsilateral MGB and the contralateral IC. There were no double-labeled neurons in the collateral projections between the other combinations of targets. Therefore, we conclude that the ascending projection, the commissural projection and the descending projection to these targets arise from separate populations of neurons.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0378-5955
pubmed:author
pubmed:issnType
Print
pubmed:volume
218
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
72-80
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Neuronal organization of the rat inferior colliculus participating in four major auditory pathways.
pubmed:affiliation
Laboratory of Neuroanatomy, Center for Biomedical Research and Education, Kanazawa University Graduate School of Medical Science, Kanazawa 920 8640, Japan. okoyama@med.kanazawa-u.ac.jp
pubmed:publicationType
Journal Article