|Alternative Title||Neural basis of reward processes for children and adolescents|
|Thesis Advisor||施建农 ; 刘彤冉|
|Place of Conferral||北京|
|Keyword||奖赏加工 儿童 青少年 ERP 冲突控制|
Reward can enhance behavioral motivation, elicit positive emotion and optimize the allocation of attention resources for people. Among multiple reward stimuli, monetary and social rewards are typical representative. The development and maturation of brain reward system begins at birth and continues throughout an individual's life. The childhood and adolescence are critical periods for the development of brain reward system. According to previous research, the current study further investigated the developmental changes in reward processes, the incentive differences between monetary and social rewards and how the two kinds of rewards impact the response inhibition behavior for children, adolescents and adults.
(2) In study2, for the ERP data, cue-P3, target-P2 and target-P3 were investigated to identify the reward motivation, emotional arousal and attention allocation during reward responses. Adults showed larger cue-P3 responses for monetary than social rewards. Adolescents' emotional responses to reward, which were reflected in target-P2, were stronger than those of adults and were effectively regulated by different magnitudes of social reward. Attention allocation (target-P3) was regulated by reward magnitudes more effectively for adolescents than adults, and limited by an immature reward system, attention allocation of children was insensitive to reward magnitudes. The current study revealed that adolescents had heightened sensitivity to reward with inducing stronger emotional arousal and more effective attention allocation during reward processes.
|王迪. 奖赏加工发展的认知神经机制[D]. 北京. 中国科学院研究生院,2018.|
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