delta frequency band (1–4 Hz) were included in this study. Different frequencies and cross-hemisphere combinations will be analyzed in a future study. Table 1 shows the Brodmann areas and Talairach Atlas coordinates of the voxels in the present study which are used to calculate distances between Brodmann area center voxels including the computation of the Euclidean distance between Brodmann areas: D=x2+y2+z2.