EEG theta/beta ratio and spectral power correlates of executive functions in children and adolescents with AD/HD
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1
University of Wollongong, School of Psychology, Australia
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2
Peking University Sixth Hospital, Institute of Mental Health, Peking University, China
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3
Faculty of Education, Beijing Normal University, China
Aims: In past electroencephalogram (EEG) studies, elevated theta/beta ratio (TBR) in patients with AD/HD was thought to be an index of the disorder. However, recent studies suggest the index is not reliable and age may moderate the effect. Therefore, the current study firstly aimed to replicate a trend exposed by recent findings in children and adolescents. Secondly, as spontaneous brain activity is increasingly being considered as potentially informative as neural activity when engaged in a task, this study was to testify whether resting activity measured by EEG can be biomarkers for behavioural performance in participants with AD/HD. Method: Fifty three participants with AD/HD and 37 healthy controls were recruited in China, and were further divided into a child group and an adolescent group. Ten minutes’ EEG was recorded with eyes closed, and the EEG was Fourier transformed. Relative bands (delta, theta, alpha, and beta), TBR, and total power were calculated. Participants with AD/HD additionally completed sustained attention and executive function tasks in Cambridge Neuropsychological Test Automated Battery. Results: In contrast to early studies, TBR did not differ groups across age; however, TBR was positively correlated to inattentive symptom. Besides, other correlations were found between EEG activity and behaviours including inattention symptoms and cognitive tasks ranging from sustained attention to higher-order executive functions. Conclusions: The results did not support the diagnostic value of TBR. Instead, the correlations imply the prognostic value of EEG. Also, given the nature of EEG heterogenous in AD/HD, the results suggest some directions for further exploring behavioural meanings of EEG.
Keywords:
AD/HD,
EEG,
Theta/Beta ratio,
biomarker,
behavioural meaning,
prognostic
Conference:
ASP2016 - The 26th Annual Meeting of the Australasian Society for Psychophysiology, Adelaide Australia, Adelaide,SA, Australia, 12 Dec - 14 Dec, 2016.
Presentation Type:
Poster Presentation
Topic:
Abstract (student award)
Citation:
Zhang
D,
Li
H,
Wu
Z,
Zhao
Q,
Song
Y,
Liu
L,
Qian
Q,
Wang
Y,
Roodenrys
S,
Johnstone
SJ and
Sun
L
(2016). EEG theta/beta ratio and spectral power correlates of executive functions in children and adolescents with AD/HD.
Conference Abstract:
ASP2016 - The 26th Annual Meeting of the Australasian Society for Psychophysiology, Adelaide Australia.
doi: 10.3389/conf.fnhum.2016.221.00025
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Received:
25 Oct 2016;
Published Online:
05 Dec 2016.
*
Correspondence:
Mr. Dawei Zhang, University of Wollongong, School of Psychology, Wollongong, NSW, 2500, Australia, tbabm617214@gmail.com