Symptoms correlated with changes in physiology during autonomic challenge in patients (r=.536, p=.039), but not controls. Across the study anxiety score correlated with absolute change in pre-tilt and average HR during tilt (r=.483, p=.050) and symptoms of dysautonomia (r=.813, p=.001...
Both inattentive and hyperactive-impulsive symptoms were associated with arousal levels and fluctuations, independently from ODD/CD. Overall, we extend previous findings showing that under-arousal, but also fluctuating arousal, are context-specific rather than stable impairments in ADHD....