Fig. 2.

Correlations in resting brain activity are lateralized to the left vs. right hemispheres in a qualitatively distinct manner. (Left) Regions detected with the “segregation” metric exhibited a relative shift toward stronger within- relative to across-hemisphere correlations. (Center) Regions detected with the “integration” metric exhibited a shift toward stronger summed within- and across-hemisphere correlations. Metrics were compared at homotopic locations in the left and right hemispheres. For each surface location (node), integration = LL + LR − (RR + RL) and segregation = LL − LR − (RR − RL), with positive (negative) sign indicating left (right) lateralization. Label conventions are the same as in Fig. 1. See Fig. S2 for display of the same results in more typical views on the folded cortical surface.