Figure 9

A-C. Cross-frequency PS Spearman correlation (Rho) (left), loading factors of PCA analysis in the non-rotated PCA (middle) and rotated PCA (right). In the left side of Figures 9A-C, it appears the cross-frequency correlation matrix for the children, young adults and the total sample. The Loading factors obtained from the non-rotated (middle) and varimax rotated (right) PCA are shown in the middle and the right of Figure 9A-C. 9D. The Spearman correlation with age of the component scores was also computed (Figure 9D) for both non-rotated and rotated PCA.