Intramodal (interregional) power correlations between theta EROs exhibit gradual increases from age 12 to 25; the correlations between anterior and central or posterior theta EROs exhibit the largest increase. Correlations range from 0.59 to 0.87, with Cz-Pz being consistently the largest and Fz-Pz the smallest. Increases from age 12 to age 25 range from 3% to 13% of the mean value of the correlations, with the increase in Fz-Pz the largest in each modality in females and in the male visual modality; the increase in male auditory Fz-Cz was greater than the Fz-Pz increase. The increases at seven of the twelve correlation pairs (three for males and four for females) were significant at the p < 0.05 level as determined by bootstrapping. (See the top panel of Figure 2 and Table 2.)
