Fig. 2.

Mean power in different age groups. - -○- -, control group; –●–, ADHD group. *P < 0.05.

A: Age-related changes in occipital alpha power. The power of the alpha band in the occipital region decreased age-dependently in both the ADHD and control groups. Although occipital alpha power was lower (although this was not significant) in the ADHD group during early development, this difference decreased after the age of 11–12 years.

B: Age-related changes in frontal beta power. The power of the beta band in the frontal region decreased age-dependently in both the ADHD and control groups. For all age groups, children with ADHD exhibited higher power compared with the control group.

ADHD, attention deficit disorder/hyperactivity disorder; y, year(s).