Objective: To evaluate whether cortical activity recorded during attentional load in children with ADHD is different compared with controls.
Method: Quantitative electroencephalography (QEEG) was performed at open eyes and during performance of the Continuous Performance Task.
Results: Children with ADHD showed an altered pattern of QEEG activity, especially during the attentional load task, with increased slow cortical activity (mainly over the frontal areas) and decreased fast cortical activity.
Conclusions: The findings indicate a different arousal level in children with ADHD, which could be due to a delay in functional cortical maturation. To evaluate the clinical importance of these findings, a longitudinal follow-up will be conducted.
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