Age and gender effects in EEG coherence: II. Boys with attention deficit/hyperactivity disorder.

Objective: This study investigated intra-hemispheric and inter-hemispheric EEG coherences as a function of age in boys with different subtypes of Attention Deficit/Hyperactivity Disorder (AD/HD), in comparison with a control group of normal boys.

Methods: Three groups of 40 children (AD/HD combined type, AD/HD inattentive type, and normal controls) participated. Each group contained 8 males in each 1 year band from 8 to 12 years.

Effects of stimulant medications on the EEG of children with attention-deficit/hyperactivity disorder.

Rationale: Stimulant medications are the most commonly used treatments for attention deficit/hyperactivity disorder (ADHD) in North America and Australia, although it is still not entirely known how these medications work.

Objectives: This study aimed to investigate the effects of stimulant medications on the EEG of children with the Combined subtype of ADHD.

Method: An initial EEG was recorded during an eyes-closed resting condition and Fourier transformed to provide absolute and relative power estimates for the delta, theta, alpha and beta bands.