Yu Mei, Liu Tongran, Shi Jiannong
CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, 100049, China.
CAS Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, Beijing, 100101, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, 100049, China.
Neuropsychologia. 2020 May;142:107469. doi: 10.1016/j.neuropsychologia.2020.107469. Epub 2020 Apr 17.
In decision making, different rewards such as money and food may lead to different behavioral outcomes and neural dynamics. In this study, we used event-related potential (ERP) techniques and delay discounting tasks with money and snacks as rewards to determine whether there are differences in behavior and neurophysiology across the two tasks. The results showed that participants not only behaved differently but also showed different neural patterns in the money and snack tasks. In particular, at the behavioral level, participants discounted snacks more than money. At the neural level, the N2 amplitudes in the snack task were more negative than those in the money task. It was also discovered that for females, the amplitudes of P3 in the snack task were larger than those in money, while there was no difference for males. The current study showed the essential roles of frontal cognitive control function during varied delay discounting processes on money and food rewards.
在决策过程中，诸如金钱和食物等不同奖励可能会导致不同的行为结果和神经动力学。在本研究中，我们使用事件相关电位（ERP）技术以及以金钱和零食作为奖励的延迟折扣任务，来确定这两项任务在行为和神经生理学方面是否存在差异。结果表明，参与者不仅在行为上有所不同，而且在金钱和零食任务中还表现出不同的神经模式。具体而言，在行为层面，参与者对零食的折扣程度高于金钱。在神经层面，零食任务中的N2波幅比金钱任务中的更负。研究还发现，对于女性而言，零食任务中P3的波幅大于金钱任务中的，而男性则没有差异。当前研究表明了额叶认知控制功能在对金钱和食物奖励的不同延迟折扣过程中的重要作用。
