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Coherence in children with Attention-Deficit/Hyperactivity Disorder and excess beta activity in their EEG.
Clin Neurophysiol 2007; 118(7):1472-9CN

Abstract

OBJECTIVE

This study investigated differences in coherence measures between two groups of children with Attention-Deficit/Hyperactivity Disorder (ADHD) - with the typical EEG profile (increased theta and decreased beta activity), and with excess beta activity - and a normal control group.

METHODS

Thirty-four children with ADHD were included in each of the typical and excess beta groups, and were age and sex matched with 34 control subjects. EEG was recorded from 21 sites during an eyes-closed resting condition. Wave-shape coherence was calculated for eight intrahemispheric and eight interhemispheric electrode pairs, for the delta, theta, alpha and beta bands.

RESULTS

In comparison to the controls, the typical ADHD group primarily had increased intrahemispheric theta and beta coherence at short-medium inter-electrode distances, and increased interhemispheric coherence for theta in the frontal and central/parietal/occipital regions. Their laterality effect for interhemispheric short-medium inter-electrode distances was reduced in the theta band. Differences between the excess beta group and the control group were primarily found in laterality of the intrahemispheric theta coherence at short-medium electrode distances, and increased interhemispheric theta coherence in the frontal regions. Reduced delta coherence in the temporal regions was also found.

CONCLUSIONS

These results suggest that ADHD children with excess beta power have an underlying brain dysfunction in the frontal lobes which is found in common with children with the typical EEG profile. However a number of qualitative differences exist which could be associated with other aspects of the ADHD diagnosis or another comorbid condition.

SIGNIFICANCE

This is the first study to investigate EEG coherence in ADHD children who have increased beta power.

Authors+Show Affiliations

Brain & Behaviour Research Institute and School of Psychology, University of Wollongong, Wollongong, Australia. adam_clarke@uow.edu.auNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17502165

Citation

Clarke, Adam R., et al. "Coherence in Children With Attention-Deficit/Hyperactivity Disorder and Excess Beta Activity in Their EEG." Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, vol. 118, no. 7, 2007, pp. 1472-9.
Clarke AR, Barry RJ, McCarthy R, et al. Coherence in children with Attention-Deficit/Hyperactivity Disorder and excess beta activity in their EEG. Clin Neurophysiol. 2007;118(7):1472-9.
Clarke, A. R., Barry, R. J., McCarthy, R., Selikowitz, M., Johnstone, S. J., Hsu, C. I., ... Croft, R. J. (2007). Coherence in children with Attention-Deficit/Hyperactivity Disorder and excess beta activity in their EEG. Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology, 118(7), pp. 1472-9.
Clarke AR, et al. Coherence in Children With Attention-Deficit/Hyperactivity Disorder and Excess Beta Activity in Their EEG. Clin Neurophysiol. 2007;118(7):1472-9. PubMed PMID: 17502165.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Coherence in children with Attention-Deficit/Hyperactivity Disorder and excess beta activity in their EEG. AU - Clarke,Adam R, AU - Barry,Robert J, AU - McCarthy,Rory, AU - Selikowitz,Mark, AU - Johnstone,Stuart J, AU - Hsu,Ching-I, AU - Magee,Christopher A, AU - Lawrence,Carlie A, AU - Croft,Rodney J, Y1 - 2007/05/14/ PY - 2006/06/26/received PY - 2007/03/21/revised PY - 2007/04/14/accepted PY - 2007/5/16/pubmed PY - 2007/7/26/medline PY - 2007/5/16/entrez SP - 1472 EP - 9 JF - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology JO - Clin Neurophysiol VL - 118 IS - 7 N2 - OBJECTIVE: This study investigated differences in coherence measures between two groups of children with Attention-Deficit/Hyperactivity Disorder (ADHD) - with the typical EEG profile (increased theta and decreased beta activity), and with excess beta activity - and a normal control group. METHODS: Thirty-four children with ADHD were included in each of the typical and excess beta groups, and were age and sex matched with 34 control subjects. EEG was recorded from 21 sites during an eyes-closed resting condition. Wave-shape coherence was calculated for eight intrahemispheric and eight interhemispheric electrode pairs, for the delta, theta, alpha and beta bands. RESULTS: In comparison to the controls, the typical ADHD group primarily had increased intrahemispheric theta and beta coherence at short-medium inter-electrode distances, and increased interhemispheric coherence for theta in the frontal and central/parietal/occipital regions. Their laterality effect for interhemispheric short-medium inter-electrode distances was reduced in the theta band. Differences between the excess beta group and the control group were primarily found in laterality of the intrahemispheric theta coherence at short-medium electrode distances, and increased interhemispheric theta coherence in the frontal regions. Reduced delta coherence in the temporal regions was also found. CONCLUSIONS: These results suggest that ADHD children with excess beta power have an underlying brain dysfunction in the frontal lobes which is found in common with children with the typical EEG profile. However a number of qualitative differences exist which could be associated with other aspects of the ADHD diagnosis or another comorbid condition. SIGNIFICANCE: This is the first study to investigate EEG coherence in ADHD children who have increased beta power. SN - 1388-2457 UR - https://www.unboundmedicine.com/medline/citation/17502165/Coherence_in_children_with_Attention_Deficit/Hyperactivity_Disorder_and_excess_beta_activity_in_their_EEG_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1388-2457(07)00161-7 DB - PRIME DP - Unbound Medicine ER -