The advent of sophisticated brain mapping techniques (magnetic resonance imaging [MRI], functional MRI [fMRI]) has given rise to the accidental discovery of a “default mode network” (DMN) in the brain, which is activated when individuals at rest are left undisturbed to think to themselves.1 The activity associated with engagement of the DMN has been described as “mind-wandering,” and has...
A 17-year-old male with a history of attention-deficit/hyperactivity disorder (ADHD) was brought by the police to the emergency room from his school for bizarre behavior. According to the reports, the patient had been observed talking to himself during class, laughing inappropriately, and making odd statements. The patient initially denied illicit substance use, and his urine toxicology and...