A retrospective survey of childhood ADHD symptomatology among adult narcoleptics.

Objective: This study examined the retrospective history of childhood ADHD symptomatology in an adult narcoleptic population (Narcolepsy Group [NG]: n = 161) compared with a control group (CG: n = 117).

Method: Both groups completed the Wender Utah Rating Scale (WURS), a retrospective self-report questionnaire indicating the presence of childhood ADHD symptomatology in adults.

Results: Childhood ADHD symptoms were significantly greater in NG than CG (p < .

Cardiovascular fitness is associated with altered cortical glucose metabolism during working memory in ɛ4 carriers.

Background: The possibility that ɛ4 may modulate the effects of fitness in the brain remains controversial. The present exploratory FDG-PET study aimed to better understand the relationship among ɛ4, fitness, and cerebral metabolism in 18 healthy aged women (nine carriers, nine noncarriers) during working memory.

Methods: Participants were evaluated using maximal level of oxygen consumption, California Verbal Learning Test, and FDG-PET, which were collected at rest and during completion of the Sternberg working memory task.