The Emergence of the Spatial Structure of Tectal Spontaneous Activity Is Independent of Visual Inputs
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Cell Biology
Molecular Biology
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The brain is spontaneously active, even in the absence of sensory stimulation. The functionally mature zebrafish optic tectum shows spontaneous activity patterns reflecting a functional connectivity adapted for the circuit's functional role and predictive of behavior. However, neither the emergence of these patterns during development nor the role of retinal inputs in their maturation has been characterized. Using two-photon calcium imaging, we analyzed spontaneous activity in intact and enucleated zebrafish larvae throughout tectum development. At the onset of retinotectal connections, intact larvae showed major changes in the spatiotemporal structure of spontaneous activity. Although the absence of retinal inputs had a significant impact on the development of the temporal structure, the tectum was still capable of developing a spatial structure associated with the circuit's functional roles and predictive of behavior. We conclude that neither visual experience nor intrinsic retinal activity is essential for the emergence of a spatially structured functional circuit.
Liu Y, Chen Y, Duffy C, VanLeuven A, Byers J, Schriever H bioRxiv. 2024; .
PMID: 39314470 PMC: 11419034. DOI: 10.1101/2024.09.11.612511.
Bandet M, Winship I Elife. 2024; 12.
PMID: 38687189 PMC: 11060715. DOI: 10.7554/eLife.90080.
Functional neuronal circuits emerge in the absence of developmental activity.
Barabasi D, Schuhknecht G, Engert F Nat Commun. 2024; 15(1):364.
PMID: 38191595 PMC: 10774424. DOI: 10.1038/s41467-023-44681-2.
Facemap: a framework for modeling neural activity based on orofacial tracking.
Syeda A, Zhong L, Tung R, Long W, Pachitariu M, Stringer C Nat Neurosci. 2023; 27(1):187-195.
PMID: 37985801 PMC: 10774130. DOI: 10.1038/s41593-023-01490-6.
Radial astrocyte synchronization modulates the visual system during behavioral-state transitions.
Uribe-Arias A, Rozenblat R, Vinepinsky E, Marachlian E, Kulkarni A, Zada D Neuron. 2023; 111(24):4040-4057.e6.
PMID: 37863038 PMC: 10783638. DOI: 10.1016/j.neuron.2023.09.022.