Department of Psychology, Ryerson University, 350 Victoria Street, Toronto, ON, M5B 2K3, Canada.
Sci Rep. 2020 Nov 19;10(1):20196. doi: 10.1038/s41598-020-77369-4.
Reward anticipation at encoding enhances later recognition, but it is unknown to what extent different levels of processing at encoding (gist vs. detail) can benefit from reward-related memory enhancement. In the current study, participants (N = 50) performed an incidental encoding task in which they made gist-related or detail-related judgments about pairs of visual objects while in anticipation of high or low reward. Results of a subsequent old/new recognition test revealed a reward-related memory benefit that was specific to objects from pairs encoded in the attention-to-gist condition. These findings are consistent with the theory of long-axis specialization along the human hippocampus, which localizes gist-based memory processes to the anterior hippocampus, a region highly interconnected with the dopaminergic reward network.
在编码时对奖励的期待会增强后续的识别，但目前尚不清楚编码时不同层次的加工（主旨与细节）在多大程度上能够受益于与奖励相关的记忆增强。在当前的研究中，参与者（N=50）执行了一项附带的编码任务，他们在期待高或低奖励的情况下对成对的视觉对象进行主旨相关或细节相关的判断。随后的旧/新识别测试的结果显示，奖励相关的记忆获益仅针对在注意主旨条件下编码的成对物体。这些发现与人类海马体长轴专业化理论一致，该理论将基于主旨的记忆过程定位在前海马体，该区域与多巴胺能奖励网络高度互联。
