Developmental differences in global cortical phase-locking and power.

(A) Across most frequency bands, adolescents displayed similar resting-state phase-locking to adults. However, in the 5–9 Hz frequency band, there was a significant linear decrease in phase-locking throughout development (gray shaded region; p t statistic from the PLV × Age regression model. Data displayed categorically after segregation into 2 groups via a median split. (B) Power as a function of frequency. Delta band power significantly decreased with age, whereas beta band power significantly increased with age. Top color bar represents the magnitude of the t statistic from the Power × Age regression model. Data displayed categorically after segregation into 2 groups via a median split. In both (A) and (B), shaded gray patches represent frequency intervals demonstrating a significant linear relationship with age. Red and blue lines and shaded bars in the line plots represent the mean (solid line) and standard error of the mean (shaded patch around mean), respectively, in adolescents (red) and adults (blue). See S1 Data for individual data points. FDR, false discovery rate; PLV, phase-locking value.