Structured connectivity in the output of the cerebellar cortex

Kim M. Gruver, Jenny W. Y. Jiao, Eviatar Fields, Sen Song, Per Jesper Sjöström and Alanna J. Watt ()
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Kim M. Gruver: McGill University
Jenny W. Y. Jiao: McGill University
Eviatar Fields: McGill University
Sen Song: Tsinghua University
Per Jesper Sjöström: McGill University
Alanna J. Watt: McGill University

Nature Communications, 2024, vol. 15, issue 1, 1-14

Abstract: Abstract 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.

Date: 2024
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DOI: 10.1038/s41467-024-49339-1

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