Fig. 2. Network-to-node connectivity of the default mode and arousal networks vary with 3-month posttraumatic stress severity.

A Multiple regression analyses revealed connectivity between the left dorsolateral prefrontal cortex (DLPFC; blue) and the arousal network (AN; pink) varied inversely with 3-month PCL-5 scores. B Conversely, connectivity between the right inferior temporal gyrus (ITG; red) and the default mode network (DMN; yellow) was positively related to PCL-5 scores assessed 3 months post trauma. Scatterplots are not inferential but are included to illustrate the relationship between network-to-node connectivity and PCL-5 scores. Dots represent individual participant scores for connectivity (average of the cluster) and PCL-5 total score. Solid red lines represent the linear line of best fit.