Mohammad Ali Nazari - Cognitive Neuroscience Laboratory, Department of Psychology, Faculty of Education & Psychology, University of Tabriz, Tabriz, Iran
Maryam Taghavi Jelodar - Department of Psychology, Faculty of Educational Sciences and Psychology, Alzahra University, Tehran, Iran
Hasan Shahrokhi - Research Centre of Psychiatry and Behavioral Sciences, Tabriz University of Medical Sciences, Tabriz, Iran

Background: Attention-Deficit Hyperactivity Disorder (ADHD) is a common psychiatriccomplication in children, which affects about 5-10% of the population. Although ADHD is a multifactorialdisorder, one of its causes refers to dysfunction of the arousal.Objectives: The current study aimed at investigating whether a change in arousal level in childrenwith ADHD differs from the control group.Materials & Methods: To achieve the research objectives, the mean Skin Conductance Levels(SCLs) as an useful index of measuring arousal levels was used, and then the changes during restingeyes-open condition and after that during playing computer games on 15 male subjects aged 8 to 12years as the ADHD group and other 15 age-gender matched in the control group were evaluated;then, the recorded data were analyzed with repeated measures analysis of variance. The study wasconducted in a child mental health services center in Tabriz, Iran, in 2012.Results: Across conditions, mean SCL index was lower in the ADHD group than that of controls.Computer games caused a significant increase in SCL index, which was not different between theboth groups. The findings showed a similar pattern of changes during testing conditions for both theADHD and control groups F(1,28)=85.90; P<0.0001).Conclusion: Results confirmed a primary deficit related to autonomic hypoarousal in children withADHD. The SCL results, in addition to behavioral findings, made the authors to suggest that thedynamic changes of activities in neural system are impaired in children with ADHD.

Attention, Attention Deficit Disorder With Hyperactivity, Arousal, Video games