Figure 5. First average cortical causality pattern in the theta band for a group of normal subjects. Same conventions used as in the previously presented figure. Correlation index between the subjects was 79.9%. The realistic head below shows the equivalent representations on the real cortical surface. The yellow color codes the presence of the ROI in all the subjects of the tested population (6/6), the red color - in 5 out of 6, and the black color - in 4 out 6 subjects.