Table 1. Average density of connections between and within subnetworks of four cognitive systems.

	Sensory and association	Higher Order Cognitive	Default Mode	Subcortical
Sensory and association	0.054	0.025	0.059	0.094
Higher Order Cognitive	0.025	0.067	0.046	0.068
Default Mode	0.059	0.046	0.257	0.137
Subcortical	0.094	0.068	0.137	0.412