title: Nucleus accumbens activation mediates the influence of reward cues on financial risk taking.
abstract: In functional magnetic resonance imaging research, nucleus accumbens (NAcc) activation spontaneously increases before financial risk taking. As anticipation of diverse rewards can increase NAcc activation, even incidental reward cues may influence financial risk taking. Using event-related functional magnetic resonance imaging, we predicted and found that anticipation of viewing rewarding stimuli (erotic pictures for 15 heterosexual men) increased financial risk taking, and that this effect was partially mediated by increases in NAcc activation. These results are consistent with the notion that incidental reward cues influence financial risk taking by altering anticipatory affect, and so identify a neuropsychological mechanism that may underlie effective emotional appeals in financial, marketing, and political domains.
authors.affiliation: Department of Psychology, Stanford University, Stanford, CA 94305, USA. knutson@psych.stanford.edu
authors.forename: Brian
authors.initials: B
authors.lastname: Knutson
authors.forename: G Elliott
authors.initials: GE
authors.lastname: Wimmer
authors.forename: Camelia M
authors.initials: CM
authors.lastname: Kuhnen
authors.forename: Piotr
authors.initials: P
authors.lastname: Winkielman
mesh_terms: D000293:Adolescent; D000328:Adult; D001931:Brain Mapping; D003463:Cues; D004467:Economics; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009714:Nucleus Accumbens / Q000098:blood supply / Q000502:physiology*; D010100:Oxygen / Q000097:blood; D012044:Regression Analysis; D012201:Reward; D012309:Risk-Taking
chemical_list: D010100:Oxygen