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Electroencephalogram differences in two subtypes of Attention-Deficit/Hyperactivity Disorder

Journal Article


Abstract


  • This study investigated EEG differences between children with two subtypes of Attention-Deficit/Hyperactivity Disorder (ADHD) and normal control subjects. 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, and the mean frequency for each band was calculated. Ratio coefficients were also calculated between frequency bands. Mean group differences were found in the theta, alpha, and beta bands between all three groups. Similarly, differences were found between all three groups for the theta/alpha and theta/beta ratios and for the mean frequency of the total EEG. These results support a model of ADHD resulting from a developmental deviation rather than a maturational lag in the central nervous system. Differences between the clinical groups in frontal activity suggest that different neuroanatomical systems are involved in the different subtypes of ADHD.

Publication Date


  • 2001

Citation


  • Clarke, A. R., Barry, R. J., McCarthy, R., & Selikowitz, M. (2001). Electroencephalogram differences in two subtypes of Attention-Deficit/Hyperactivity Disorder. Psychophysiology, 38(2), 212-221. doi:10.1111/1469-8986.3820212

Scopus Eid


  • 2-s2.0-0035056949

Start Page


  • 212

End Page


  • 221

Volume


  • 38

Issue


  • 2

Abstract


  • This study investigated EEG differences between children with two subtypes of Attention-Deficit/Hyperactivity Disorder (ADHD) and normal control subjects. 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, and the mean frequency for each band was calculated. Ratio coefficients were also calculated between frequency bands. Mean group differences were found in the theta, alpha, and beta bands between all three groups. Similarly, differences were found between all three groups for the theta/alpha and theta/beta ratios and for the mean frequency of the total EEG. These results support a model of ADHD resulting from a developmental deviation rather than a maturational lag in the central nervous system. Differences between the clinical groups in frontal activity suggest that different neuroanatomical systems are involved in the different subtypes of ADHD.

Publication Date


  • 2001

Citation


  • Clarke, A. R., Barry, R. J., McCarthy, R., & Selikowitz, M. (2001). Electroencephalogram differences in two subtypes of Attention-Deficit/Hyperactivity Disorder. Psychophysiology, 38(2), 212-221. doi:10.1111/1469-8986.3820212

Scopus Eid


  • 2-s2.0-0035056949

Start Page


  • 212

End Page


  • 221

Volume


  • 38

Issue


  • 2