EEG & ADHD ( 5)

Clarke's research group finds further specificity in the ADHDcom cohort

Clarke, et al, 2001,Clinical Neurophysiology

In this study they investigated ADHDcom (N= 184,controls= 40 ) The whole ADHD sample had generalized increase in è and decrease in relative á; increased è/ â ratio, decreased frontal Ä and increased frontal and central total power.

They found that the ADHDcom group is not homogeneous but consisted of three clusters characterized by:

1. Increased slow wave and deficient fast wave,

2. Increased high amplitude è and deficient â and

3. Excessive â