Tectal connections in Python reticulatus

Détails

ID Serval
serval:BIB_5030C9A78ACE
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Tectal connections in Python reticulatus
Périodique
Journal of Comparative Neurology
Auteur(s)
Welker  E., Hoogland  P. V., Lohman  A. H.
ISSN
0021-9967 (Print)
Statut éditorial
Publié
Date de publication
11/1983
Volume
220
Numéro
3
Pages
347-54
Notes
Journal Article --- Old month value: Nov 1
Résumé
The origins of the axons terminating in the mesencephalic tectum in Python reticulatus were examined by unilateral tectal injections of horseradish peroxidase. Retrogradely labeled cells were observed bilaterally throughout the spinal cord in all subdivisions of the trigeminal system, with the exception of nucleus principalis, which showed labeled cells only on the ipsilateral side. Labeling of the reticular formation occurred bilaterally in nucleus reticularis inferior magnocellularis, nucleus reticularis lateralis, nucleus reticularis, and the mesencephalic reticular formation. The tectum also receives bilateral projections from the dorsal tegmental field, the nucleus of the lateral lemniscus, and nucleus isthmi, and ipsilateral projections from nucleus profundus mesencephali. A few labeled cells were found ipsilaterally in the locus coeruleus and in nuclei vestibulares ventrolateralis and ventromedialis. In the diencephalon labeled cells were observed ipsilaterally in nucleus ventrolateralis thalami, nucleus ventromedialis thalami, nucleus suprapeduncularis, and in the dorsal and ventral lateral geniculate nuclei. Bilateral labeling was observed in nucleus periventricularis hypothalami. Furthermore, labeling was ipsilaterally present in the ventral telencephalic areas. The tectum in Python reticulatus receives a wide variety of afferent connections which confirm the role of the tectum as an integration center of visual and exteroceptive information.
Mots-clé
Afferent Pathways/physiology Animals Corpora Quadrigemina/*physiology Diencephalon/physiology Efferent Pathways/physiology Horseradish Peroxidase/diagnostic use Mesencephalon/physiology Nerve Fibers/physiology Neural Pathways/physiology Reticular Formation/physiology Snakes/*physiology Spinal Cord/physiology Trigeminal Nuclei/physiology
Pubmed
Web of science
Création de la notice
24/01/2008 15:40
Dernière modification de la notice
03/03/2018 17:08
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