Regional variation in the organization and connectivity of the first synapse in the primate night vision pathway.
cellular neuroscience
sensory neuroscience
Journal
iScience
ISSN: 2589-0042
Titre abrégé: iScience
Pays: United States
ID NLM: 101724038
Informations de publication
Date de publication:
17 Nov 2023
17 Nov 2023
Historique:
received:
22
03
2023
revised:
25
08
2023
accepted:
29
09
2023
medline:
2
11
2023
pubmed:
2
11
2023
entrez:
2
11
2023
Statut:
epublish
Résumé
Sensitivity of primate daylight vision varies across the visual field. This is attributed to regional variations in cone photoreceptor density and synaptic connectivity of the underlying circuitry. In contrast, we have limited understanding of how synapse organization of the primate night vision pathway changes across space. Using serial electron microscopy, we reconstructed the first synapse of the night vision pathway between rod photoreceptors and second-order neurons, at multiple locations from the central part of the primate retina, fovea, to the periphery. We find that most facets of the rod synapse connectivity vary across retinal regions. However, rod synaptic divergence and convergence patterns do not change in the same manner across locations. Moreover, patterns of rod synapse organization are tightly correlated with photoreceptor density. Such regional heterogeneities revise the connectivity diagram of the primate rod synapse which will shape synapse function and sensitivity of the night vision pathway across visual space.
Identifiants
pubmed: 37915604
doi: 10.1016/j.isci.2023.108113
pii: S2589-0042(23)02190-9
pmc: PMC10616377
doi:
Types de publication
Journal Article
Langues
eng
Pagination
108113Informations de copyright
© 2023 The Author(s).
Déclaration de conflit d'intérêts
The authors declare they have no competing interests.
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