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Neural Mechanisms of Self-Control and Impulsivity in Reward Decision-Making
Wang Yujiao, Zhang Qinglin, Wei Shiyuan, Zeng Jianmin
2013, 11(6):
854-859.
In reward decision-making, self-control is the choice pattern of resisting instant temptation in order to gain more valuable or long-run benefits, while impulsivity is the opposite preference. In different decision phases, different neural regions play roles in the spatial orientation of brain regions of self-control and impulsivity: in early stage of decisionmaking, limbic or paralimbic cortex, including ventral striatum, ventral medial prefrontal cortex and posterior cingulate cortex, involve in both self-controlled and impulsive decisions; in later period of decision-making, fronto-parietal and dorsolateral area mainly play an important role in self-controlled decisions, while limbic system and orbitofrontal cortex possibly play a dominate part in impulsive decisions. In addition, seen from point of reward types, secondary rewards share some brain regions such as limbic cortical with primary rewards, as well as its unique areas such as orbitofrontal cortex. With respect to ERP studies of time course, self-controlled and impulsive decisions will give rise to amplitude of fluctuation of some ERP components, such as early component P1 and N1, later component P3, ERN and so on. The future research should investigate the independent effect of each subregion and their interactive effects, incorporating more precise experimental design and brain location results.
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