心理学
报酬依赖
奖励制度
脑刺激奖励
功能磁共振成像
眶额皮质
好奇心
腹侧纹状体
收据
人格
认知心理学
纹状体
神经科学
五大性格特征
求新
认知
社会心理学
前额叶皮质
伏隔核
中枢神经系统
计算机科学
万维网
多巴胺
作者
Joe J. Simon,Stephan Walther,Christian J. Fiebach,Hans‐Christoph Friederich,Christoph Stippich,Matthias Weisbrod,Stefan Kaiser
出处
期刊:NeuroImage
[Elsevier]
日期:2010-01-01
卷期号:49 (2): 1868-1874
被引量:170
标识
DOI:10.1016/j.neuroimage.2009.09.016
摘要
The neural processing of reward can be differentiated into two sub-components with different functions, "wanting" (i.e., the expectation of a reward which includes appetitive and motivational components) and "liking" (i.e., the hedonic impact experienced during the receipt of a reward), involving distinct neural systems. We hypothesize that variability in neural reward processing previously observed in healthy subjects could reflect inter-individual differences in personality. Therefore, the aim of this study was to investigate how the neural processing during expectation and reception of a reward depends on interpersonal differences in reward sensitivity, more specifically the tendency to approach vs. avoid reward-related situations. We employed event-related functional magnetic resonance imaging during a monetary incentive delay task. Subjects with a high approach motivation showed more activation of the Ventral Striatum (VS) during the receipt of a reward, and more medial orbitofrontal activity during both the receipt and omission of a reward. Subjects with a high behavioral inhibition showed less activation in the VS during the receipt of a reward. These findings indicate that the tendency to approach or avoid reward-related situations exhibits a distinct relation with neural reward processing. Specifically, subjects with high behavioral approach appear to be sensitive mainly to positive outcomes and to a lesser extent to the omissions of rewards, whereas subjects with low behavioral approach as well as those with a high inhibition tendency display a blunted response to rewards.
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