A resting-state alpha sub-band marker of attentional vulnerability in children with high-risk for ADHD: A preliminary electrophysiological study

BACKGROUND: Electrophysiological biomarkers of Attention-Deficit/Hyperactivity Disorder (ADHD) have largely focused on the theta/beta ratio, reflecting cortical underarousal. Alpha-band activity also supports attentional regulation, yet functional differentiation of alpha sub-bands remains insufficiently characterized, particularly in symptomatically high-risk populations. This study assessed regional differences in the alpha1 (8-10 Hz)/alpha2 (10-12 Hz) (α1/α2) ratio during resting-state EEG in…

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