The Talairach Atlas coordinates of the Montreal Neurological Institute's MRI average of 305 brains (Pascual-Marqui, 1999; Lancaster et al., 2000) was used and the linkage to the standard anatomical 7 × 7 × 7 mm voxels each with a distinct Talairach Atlas Coordinate. Groups of voxels are also defined by the clear anatomical landmarks established by Brodmann in 1909 and referred to as Brodmann areas. The time series of current source vectors in the x, y, and z directions were computed at the center voxel of each of 14 Brodmann area that comprises the DMN. In addition to the x, y, and z time series from each voxel the resultant vector was computed as the square root of the sum of the squares for the x, y, and z source moments.
