Relation of koniocellular layers of dorsal lateral geniculate to inferior pulvinar nuclei in common marmosets.
lateral geniculate
pulvinar
thalamic matrix
visual pathway
Journal
The European journal of neuroscience
ISSN: 1460-9568
Titre abrégé: Eur J Neurosci
Pays: France
ID NLM: 8918110
Informations de publication
Date de publication:
12 2019
12 2019
Historique:
received:
10
07
2018
revised:
11
07
2019
accepted:
15
07
2019
pubmed:
26
7
2019
medline:
24
9
2020
entrez:
26
7
2019
Statut:
ppublish
Résumé
Traditionally, the dorsal lateral geniculate nucleus (LGN) and the inferior pulvinar (IPul) nucleus are considered as anatomically and functionally distinct thalamic nuclei. However, in several primate species it has also been established that the koniocellular (K) layers of LGN and parts of the IPul have a shared pattern of immunoreactivity for the calcium-binding protein calbindin. These calbindin-rich cells constitute a thalamic matrix system which is implicated in thalamocortical synchronisation. Further, the K layers and IPul are both involved in visual processing and have similar connections with retina and superior colliculus. Here, we confirmed the continuity between calbindin-rich cells in LGN K layers and the central lateral division of IPul (IPulCL) in marmoset monkeys. By employing a high-throughput neuronal tracing method, we found that both the K layers and IPulCL form comparable patterns of connections with striate and extrastriate cortices; these connections are largely different to those of the parvocellular and magnocellular laminae of LGN. Retrograde tracer-labelled cells and anterograde tracer-labelled axon terminals merged seamlessly from IPulCL into LGN K layers. These results support continuity between LGN K layers and IPulCL, providing an anatomical basis for functional congruity of this region of the dorsal thalamic matrix and calling into question the traditional segregation between LGN and the inferior pulvinar nucleus.
Identifiants
pubmed: 31344282
doi: 10.1111/ejn.14529
pmc: PMC6928438
mid: NIHMS1043453
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
4004-4017Subventions
Organisme : NIBIB NIH HHS
ID : R01 EB022899
Pays : United States
Informations de copyright
© 2019 Federation of European Neuroscience Societies and John Wiley & Sons Ltd.
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