Symmetry group factorization reveals the structure-function relation in the neural connectome of Caenorhabditis elegans

Flaviano Morone and Hernán A. Makse ()
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Flaviano Morone: City College of New York
Hernán A. Makse: City College of New York

Nature Communications, 2019, vol. 10, issue 1, 1-13

Abstract: Abstract The neural connectome of the nematode Caenorhabditis elegans has been completely mapped, yet in spite of being one of the smallest connectomes (302 neurons), the design principles that explain how the connectome structure determines its function remain unknown. Here, we find symmetries in the locomotion neural circuit of C. elegans, each characterized by its own symmetry group which can be factorized into the direct product of normal subgroups. The action of these normal subgroups partitions the connectome into sectors of neurons that match broad functional categories. Furthermore, symmetry principles predict the existence of novel finer structures inside these normal subgroups forming feedforward and recurrent networks made of blocks of imprimitivity. These blocks constitute structures made of circulant matrices nested in a hierarchy of block-circulant matrices, whose functionality is understood in terms of neural processing filters responsible for fast processing of information.

Date: 2019
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DOI: 10.1038/s41467-019-12675-8

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