title: Differential patterns of nucleus accumbens activation during anticipation of monetary and social reward in young and older adults.
abstract: Recent studies have reported inconsistent results regarding the loss of reward sensitivity in the aging brain. Although such an age effect might be due to a decline of physiological processes, it may also be a consequence of age-related changes in motivational preference for different rewards. Here, we examined whether the age effects on neural correlates of reward anticipation are modulated by the type of expected reward. Functional magnetic resonance images were acquired in 24 older (60-78 years) and 24 young participants (20-28 years) while they performed an incentive delay task offering monetary or social rewards. Anticipation of either reward type recruited brain structures associated with reward, including the nucleus accumbens (NAcc). Region of interest analysis revealed an interaction effect of reward type and age group in the right NAcc: enhanced activation to cues of social reward was detected in the older subsample while enhanced activation to cues of monetary reward was detected in the younger subsample. Our results suggest that neural sensitivity to reward-predicting cues does not generally decrease with age. Rather, neural responses in the NAcc appear to be modulated by the type of reward, presumably reflecting age-related changes in motivational value attributed to different types of reward.
authors.affiliation: Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USADepartment of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USA lrademacher@ukaachen.de.
authors.forename: Lena
authors.initials: L
authors.lastname: Rademacher
authors.affiliation: Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USADepartment of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USA.
authors.forename: Aallaa
authors.initials: A
authors.lastname: Salama
authors.affiliation: Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USADepartment of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USA.
authors.forename: Gerhard
authors.initials: G
authors.lastname: Gründer
authors.affiliation: Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USADepartment of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USADepartment of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, 52074 Aachen, Germany, JARA - Translational Brain Medicine, 52074 Aachen, Germany, and Department of Psychology, Stanford University, Stanford, CA 94305-2130, USA.
authors.forename: Katja N
authors.initials: KN
authors.lastname: Spreckelmeyer
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology* / Q000523:psychology*; D059031:Anticipation, Psychological / Q000502:physiology*; D001921:Brain / Q000502:physiology; D003463:Cues; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009042:Motivation / Q000502:physiology; D009483:Neuropsychological Tests; D009714:Nucleus Accumbens / Q000502:physiology*; D010556:Personality Tests; D011930:Reaction Time; D012201:Reward; D012919:Social Behavior; D055815:Young Adult
keywords: age; monetary reward; nucleus accumbens; reward anticipation; social reward
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