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Theta-beta ratio (vertical axis) vs age (horizontal axis) and ADHD diagnosis. Solid black circles denote subjects with diagnosis of ADHD. Open circles denote those without ADHD diagnosis. Top box are theta-beta ratios calculated using 10 s EEG time windows with less restrictive inclusion criteria; bottom box are theta-beta ratios calculated using 2 s EEG time windows with more restrictive inclusion criteria.
