Connectivity matrices of gap, synaptic and PGM. In the dependency matrices, the element in the jth column and ith row, aji, represents the total number of gap contacts/synaptic contacts, probability dependencies respectively from ith neuron to jth neuron. The subplots motor sensory, motor motor, sensory motor are zoomed in to compare detailed differences in gap, synaptic and PGM connections. Input neurons that activate the majority of the responding neurons are labelled.