DOI: 10.1177/1550059413502019

eeg.sagepub.com Letter to the Editor Attention-deficit/hyperactivity disorder (ADHD) is a neurobe-havioral and neuropsychiatric disorder with abnormalities in various neurotransmitter systems such as noradrenergic, sero-tonergic, and dopaminergic. In addition, ADHD can show a variety of neurological characteristics, including functional connectivity and network anomalies.1 Its symptoms include hyperactivity, impulsivity, inattention, and so on. Hence, ADHD patients will have lower academic performance and will display risk-taking behaviors.2 As one of the most infor-mative signals for noninvasive monitoring of human brain activities, electroencephalography (EEG) is commonly used in ADHD. Recording of the brain’s electrical activity from differ-ent electrodes placed on the scalp, measures voltage fluctua