title: A cross-sectional and longitudinal study of age effects of electrophysiological measures in hyperactive and normal children.
abstract: Longitudinal and cross-sectional event-related potential, EEG power spectral, and skin conductance level data were obtained from 138 hyperactive and 60 normal boys. A age-by-diagnosis interaction was found for several measures in the cross-sectional data and for all three types of measures in the longitudinal data. These findings emphasize the importance of age in electrophysiological studies of young children and strongly suggest an abnormal maturational process in hyperactive children.
mesh_terms: D001143:Arousal; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis*; D002648:Child; D002657:Child Development; D003430:Cross-Sectional Studies; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory; D005500:Follow-Up Studies; D005712:Galvanic Skin Response; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D011930:Reaction Time