Skip to main content
. Author manuscript; available in PMC: 2013 Feb 15.
Published in final edited form as: Neuroimage. 2011 Nov 18;59(4):3889–3900. doi: 10.1016/j.neuroimage.2011.11.035

Fig. 3. Group difference in modularity.

Fig. 3

The group difference in modularity is illustrated with sparse graphs that include 2% of all possible edges, with the graphs represented in topological space using a forced-based algorithm (Fruchterman and Reingold, 1991), for two subjects in each clinical sample. Black edges represent intra-modular connections, between brain regions in the same functional community. Red edges represent inter-modular connections, between brain regions in different functional communities. On average there are more inter-modular connections and less intra-modular connections in the networks of patients with childhood-onset schizophrenia (COS) compared to healthy participants. The P value is based on a permutation test of the difference in modularity at the population level, 20 healthy participants vs. 19 patients with COS. For a version of this figure with the different modules demarcated by colors, please see Supplementary Fig. 1.