Summary of some of the main differences in effective connectivity in schizophrenia. The source regions (Region 1) are shown in the upper view of the brain, and the target regions (Region 2) in the two lower views of the brain. The AAL2 areas with these differences show higher effective connectivity in red to yellow; and lower effective connectivity in blue. The two main higher effective connectivities are shown here. Further lower effective connectivities were found than can be indicated in arrows, with the further details shown in Tables 1 and 4.