Table showing the number of monoamine receptor-expressing cells that do not receive synapses from releasing cells, and the number of connections in each layer that are non-synaptic, including connections between neurons within the same class.

Due to a many-to-many relationship between senders and receivers, the fraction of non-synaptic edges can exceed the fraction of non-synaptic cells/nodes. Values for the expanded network including putative dop-5 and dop-6 connections are in parentheses.