Table 1.

Connectome graphs reviewed in this work.

Dataset	Nodes	Edges	Density	Species/area
C. elegans chemical synapses	296	3427	0.064	Caenorhabditis elegans
MICrONS v185	334	1736	0.031	Mus musculus visual cortex
Hemibrain v1.2	21,740	3,550,404	0.011	Drosophila melanogaster

The C. elegans connectome was derived from the July 2020 C. elegans adjacency matrix at WormWiring.org, and synapses were filtered to only include chemical synapses for this analysis^24,25. The MICrONS v185 graph was derived from the proofread soma subgraph at microns-explorer.org^10,26. The Hemibrain v1.2 dataset was accessed through the neuPrint system⁶.