title: Eveningness among late adolescent males predicts neural reactivity to reward and alcohol dependence 2 years later.
abstract: Eveningness, a preference for later sleep-wake timing, is linked to altered reward function, which may explain a consistent association with substance abuse. Notably, the extant literature rests largely on cross-sectional data, yet both eveningness and reward function show developmental changes. We examined whether circadian preference during late adolescence predicted the neural response to reward 2 years later. A sample of 93 males reported circadian preference and completed a monetary reward fMRI paradigm at ages 20 and 22. Primary analyses examined longitudinal paths from circadian preference to medial prefrontal cortex (mPFC) and ventral striatal (VS) reward responses. We also explored whether reward responses mediated longitudinal associations between circadian preference and alcohol dependence, frequency of alcohol use, and/or frequency of cannabis use. Age 20 eveningness was positively associated with age 22 mPFC and VS responses to win, but not associated with age 22 reactivity to reward anticipation. Age 20 eveningness was indirectly related to age 22 alcohol dependence via age 22 mPFC response to win. Our findings provide novel evidence that altered reward-related brain function could underlie associations between eveningness and alcohol use problems. Eveningness may be an under-recognized but modifiable risk factor for reward-related problems such as mood and substance use disorders.
authors.affiliation: University of Pittsburgh School of Medicine, Department of Psychiatry, 3811 O'Hara Street, Pittsburgh, PA 15213, United States. Electronic address: haslerbp@upmc.edu.
authors.forename: Brant P
authors.initials: BP
authors.lastname: Hasler
authors.affiliation: University of Pittsburgh School of Medicine, Department of Psychiatry, 3811 O'Hara Street, Pittsburgh, PA 15213, United States; University of Oregon, Department of Psychology, 1451 Onyx Street, Eugene, OR 97403, United States.
authors.forename: Melynda D
authors.initials: MD
authors.lastname: Casement
authors.affiliation: University of Pittsburgh, Department of Psychology, 210 South Bouquet Street, Pittsburgh, PA 15260, United States; Caldwell University, Department of Psychology and Counseling, 120 Bloomfield Avenue, Caldwell, NJ 07006, United States.
authors.forename: Stephanie L
authors.initials: SL
authors.lastname: Sitnick
authors.affiliation: University of Pittsburgh, Department of Psychology, 210 South Bouquet Street, Pittsburgh, PA 15260, United States.
authors.forename: Daniel S
authors.initials: DS
authors.lastname: Shaw
authors.affiliation: University of Pittsburgh School of Medicine, Department of Psychiatry, 3811 O'Hara Street, Pittsburgh, PA 15213, United States; University of Pittsburgh, Department of Psychology, 210 South Bouquet Street, Pittsburgh, PA 15260, United States.
authors.forename: Erika E
authors.initials: EE
authors.lastname: Forbes
mesh_terms: D000437:Alcoholism / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000523:psychology*; D001921:Brain / Q000000981:diagnostic imaging / Q000502:physiology* / Q000503:physiopathology; D001931:Brain Mapping; D002940:Circadian Rhythm / Q000502:physiology; D003863:Depression / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D008137:Longitudinal Studies; D008279:Magnetic Resonance Imaging; D008297:Male; D002189:Marijuana Abuse / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000523:psychology; D011446:Prospective Studies; D011569:Psychiatric Status Rating Scales; D012201:Reward; D014029:Tobacco Use Disorder / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000523:psychology; D055815:Young Adult
keywords: Adolescence; Alcohol; Cannabis; Circadian preference; Reward; fMRI