alexa Quantitative EEG differences in a nonclinical sample of children with ADHD and undifferentiated ADD.


Clinical and Experimental Psychology

Author(s): Kuperman S, Johnson B, Arndt S, Lindgren S, Wolraich M

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Abstract OBJECTIVE: To use quantitative electroencephalographic (EEG) techniques to identify electrophysiological differences between children with distinct disorders of attention and/or hyperactivity. METHOD: Forty children from a prescreened community sample were evaluated by means of both spectral EEG and evoked response potential (ERP) techniques. The children were 7 to 13 years of age and were selected on the basis of membership in one of the following DSM-III-R categories: attention-deficit hyperactivity disorder (ADHD) (n = 16), undifferentiated attention deficit disorder (UADD) (n = 12), or no disruptive disorder diagnosis (n = 12). RESULTS: Spectral EEG revealed that UADD subjects had less delta band relative percent power (RPP) (p < .01), more beta band RPP (p < .01), and ERP findings of a decreased rare tone P300 amplitude (p < .02) compared with the control group. ADHD subjects had spectral EEG findings of increased beta band RPP (p < .05) and ERP findings of an increased common tone N100 latency (p < .02) and a decreased rare tone P300 amplitude (p < .02). Interhemispheric asymmetries appeared to distinguish the groups: the UADD group had spectral EEG asymmetries; the ADHD group had only ERP asymmetries; and the control group had no asymmetries. CONCLUSION: Quantitative EEG techniques may prove useful in differentiating specific subtypes of ADHD. This article was published in J Am Acad Child Adolesc Psychiatry and referenced in Clinical and Experimental Psychology

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