Neuronal circuits within the homing pigeon hippocampal formation.
CaMKIIα
GFAP
avian hippocampus
calbindin
doublecortin
intrahippocampal circuitry
topography
tracing
Journal
The Journal of comparative neurology
ISSN: 1096-9861
Titre abrégé: J Comp Neurol
Pays: United States
ID NLM: 0406041
Informations de publication
Date de publication:
05 2023
05 2023
Historique:
revised:
18
01
2023
received:
13
09
2022
accepted:
23
01
2023
pubmed:
23
2
2023
medline:
28
3
2023
entrez:
22
2
2023
Statut:
ppublish
Résumé
The current study aimed to reveal in detail patterns of intrahippocampal connectivity in homing pigeons (Columba livia). In light of recent physiological evidence suggesting differences between dorsomedial and ventrolateral hippocampal regions and a hitherto unknown laminar organization along the transverse axis, we also aimed to gain a higher-resolution understanding of the proposed pathway segregation. Both in vivo and high-resolution in vitro tracing techniques were employed and revealed a complex connectivity pattern along the subdivisions of the avian hippocampus. We uncovered connectivity pathways along the transverse axis that started in the dorsolateral hippocampus and continued to the dorsomedial subdivision, from where information was relayed to the triangular region either directly or indirectly via the V-shaped layers. The often-reciprocal connectivity along these subdivisions displayed an intriguing topographical arrangement such that two parallel pathways could be discerned along the ventrolateral (deep) and dorsomedial (superficial) aspects of the avian hippocampus. The segregation along the transverse axis was further supported by expression patterns of the glial fibrillary acidic protein and calbindin. Moreover, we found strong expression of Ca
Substances chimiques
Calbindins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
790-813Informations de copyright
© 2023 The Authors. The Journal of Comparative Neurology published by Wiley Periodicals LLC.
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