A principal components analysis followed by a varimax rotation were computed for the 91 left and 91 right intra-hemisphere Brodmann area combinations that comprised the DMN for both phase shift and phase lock duration. A varimax rotation was used because it uses a min/max method to maximize loadings on a given component. Table 2 shows that with an eigenvalue cutoff of 1.0 that phase shift involved more factors than did phase lock duration and that the same number of factors were involved for the left and right hemispheres. The results of the factor analysis also demonstrated well ordered orthogonality or independent clusters of phase shift and phase lock duration where the variable loadings were essentially the same in the x, y, z directions and for the resultant vector within each hemisphere.
