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Efferent projections of the paratrigeminal nucleus in the rat.

Authors
Type
Published Article
Journal
Neuroscience Letters
0304-3940
Publisher
Elsevier
Publication Date
Volume
73
Issue
1
Pages
48–52
Identifiers
PMID: 2436098
Source
Medline
License
Unknown

Abstract

The efferent projections of the paratrigeminal nucleus in the rat were investigated by means of retrograde transport techniques. Injections were made in most of the supraspinal structures known to receive afferents from the spinal cord or the trigeminal nucleus caudalis. Spinal injections were also performed. Dense paratrigeminal efferents were seen to be directed to the nucleus of the solitary tract and to the peribrachial area, the latter including the cuneiformis and parabrachial nuclei. Projections were mostly ipsilateral. These results are discussed in relation to a possible role of the paratrigeminal nucleus in thermoreception and/or vegetative regulation processing.

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