Long-distance intraretinal connections in birds.

Détails

ID Serval
serval:BIB_55536A37D01A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Long-distance intraretinal connections in birds.
Périodique
Nature
Auteur(s)
Catsicas S., Catsicas M., Clarke P.G.H.
ISSN
0028-0836[print], 0028-0836[linking]
Statut éditorial
Publié
Date de publication
1987
Volume
326
Numéro
6109
Pages
186-187
Langue
anglais
Notes
Journal Article Research Support, Non-U.S. Gov't --- Old month value: Mar 12-18
Résumé
Electrophysiological experiments have shown in both birds and mammals that remote parts of the retina, several millimetres apart, interact at the retinal level. The anatomical basis of this is poorly understood, although in mammals some cells in the ganglion cell layer have axons that terminate in the inner plexiform layer several millimetres from the cell body. In birds, the longest previously reported intraretinal connections were from amacrine cells, extending only a few hundred microns. But we here describe very long connections that span almost the entire extent of the retina in chicks and chick embryos. The parent cell bodies are in the inner nuclear layer of the ventral half of the retina, and they project in topographical order onto the dorsal half. They do not project to the brain. They may be involved in selective switching of attention between the upper and lower parts of the visual field, at an unprecedentedly early stage of visual processing.
Mots-clé
Animals, Carbocyanines/diagnostic use, Cell Communication, Chick Embryo, Chickens, Retina/cytology
Pubmed
Web of science
Création de la notice
20/01/2008 18:49
Dernière modification de la notice
20/08/2019 15:09
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