2.8. Graph theoretical analysis

Following Chan et al. (2014), network segregation was defined as the difference of mean within-network connectivity and mean between-network connectivity divided by the mean within-network connectivity:

where $\bar{Z}$_w is the mean Fisher z-transformed correlation between ROIs within each network and $\bar{Z}$_b is the mean Fisher z-transformed correlation between ROIs of one network to all ROIs in other networks (Chan et al., 2014).