Clarke Adam R, Barry Robert J, McCarthy Rory, Selikowitz Mark, Magee Christopher A, Johnstone Stuart J, Croft Rodney J
School of Psychology, Brain and Behaviour Research Institute, University of Wollongong, Northfields Avenue, Wollongong 2522, NSW, Australia.
Clin Neurophysiol. 2006 Aug;117(8):1708-14. doi: 10.1016/j.clinph.2006.04.015. Epub 2006 Jun 21.
This study investigated EEG differences between children with attention-deficit/hyperactivity disorder (AD/HD) and matched control subjects, with either normal or low IQs.
Twenty normal-IQ and 20 low-IQ children with AD/HD, and 40 age-, IQ- and sex-matched control subjects participated in this study. EEG was recorded from 21 sites during an eyes-closed resting condition and Fourier transformed to provide estimates for total power, and absolute and relative power in the delta, theta, alpha and beta bands.
Children with AD/HD had increased theta activity with decreased levels of alpha and beta activity compared to control subjects. IQ was not found to impact on the EEG. No significant differences were found between subjects with normal and low IQs, with the low- and high-IQ AD/HD groups having similar EEG profiles.
Low-IQ children with AD/HD have similar EEG abnormalities to those with normal IQs, and IQ does not appear to impact on EEG power measures.
This is the first study to investigate EEG differences in low-IQ children with and without AD/HD.
本研究调查了患有注意力缺陷多动障碍（AD/HD）的儿童与匹配的正常或低智商对照受试者之间的脑电图差异。
20名智商正常和20名智商低的患有AD/HD的儿童，以及40名年龄、智商和性别匹配的对照受试者参与了本研究。在闭眼静息状态下从21个部位记录脑电图，并进行傅里叶变换以提供总功率以及δ、θ、α和β频段的绝对功率和相对功率估计值。
与对照受试者相比，患有AD/HD的儿童θ活动增加，α和β活动水平降低。未发现智商对脑电图有影响。智商正常和低的受试者之间未发现显著差异，低智商和高智商的AD/HD组具有相似的脑电图特征。
低智商的AD/HD儿童与智商正常的儿童具有相似的脑电图异常，并且智商似乎不会影响脑电图功率测量。
这是第一项调查有和没有AD/HD的低智商儿童脑电图差异的研究。
