Individualized cortical parcellations and subcortical segmentations were created via FreeSurfer (Fischl et al., 2002). Cortical surface models were manually checked slice-by-slice and edited for accuracy. The Desikan/Killiany parcellation was used (34 regions per hemisphere), along with subcortical segmentation (7 regions per hemisphere). Frontal and temporal poles were excluded due to frequent susceptibility artifact, and 5 visual regions (the regions of least interest) were excluded to reduce the number of multiple comparisons. The number of brain region connections that were examined, and corrected for, in the network analysis was 2,278.
