Publication Details

Zhang, D., Johnstone, S. J., Li, H., Barry, R. J., Clarke, A. R., Zhao, Q., Song, Y., Liu, L., Qian, Q., Wang, Y. & Sun, L. (2019). Time Effects on Resting EEG in Children With/Without AD/HD. Brain Topography: journal of functional neurophysiology, 32 (2), 286-294.


In this study we extend on behavioural evidence to examine the effect of time on EEG measures related to arousal and emotion/motivation in children with/without AD/HD. Thirty children with AD/HD and 30 age- and sex-matched controls participated. EEG was recorded during an eyes-closed resting condition and divided into three 2.5 min blocks after pre-processing. Time effects for absolute and relative alpha activity were found in healthy controls; these effects did not interact with AD/HD status. Interactions between time and AD/HD status were found for absolute theta, relative theta, and theta/beta ratio (TBR), with these EEG indices increasing over time in children with AD/HD. Moreover, IQ played a role in the interaction between time and AD/HD status. These results are consistent with predictions from both the optimal stimulation model and the delay aversion model, and suggest important methodological considerations for future EEG research in children with/without AD/HD.



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