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Structured connectivity in the output of the cerebellar cortex
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Structured connectivity in the output of the cerebellar cortex
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Journal Article
Structured connectivity in the output of the cerebellar cortex
2024
Overview
The spatial organization of a neuronal circuit is critically important for its function since the location of neurons is often associated with function. In the cerebellum, the major output of the cerebellar cortex are synapses made from Purkinje cells onto neurons in the cerebellar nuclei, yet little has been known about the spatial organization of these synapses. We explored this question using whole-cell electrophysiology and optogenetics in acute sagittal cerebellar slices to produce spatial connectivity maps of cerebellar cortical output in mice. We observed non-random connectivity where Purkinje cell inputs clustered in cerebellar transverse zones: while many nuclear neurons received inputs from a single zone, several multi-zonal connectivity motifs were also observed. Single neurons receiving input from all four zones were overrepresented in our data. These findings reveal that the output of the cerebellar cortex is spatially structured and represents a locus for multimodal integration in the cerebellum.
Cerebellar nuclei (CN) neurons receive synapses from Purkinje cells, yet how these are spatially organized has been unknown. Here, authors show inputs are clustered along transverse zones with many CN cells receiving multi-zonal input, suggesting multimodal integration occurs in the CN.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 14/19
/ 38/35
/ 64/110
/ 64/60
/ 9/74
/ Animals
/ Cells
/ Cerebellar Cortex - physiology
/ Cerebellar Nuclei - physiology
/ Cortex
/ Female
/ Genetics
/ Humanities and Social Sciences
/ Male
/ Mice
/ Neural Pathways - physiology
/ Neurons
/ Optics
/ Science
/ Synapses
