Electrocortical correlates of hypersensitivity to large immediate rewards in sensation seeking
Electrocortical correlates of hypersensitivity to large immediate rewards in sensation seeking
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DOI：
10.1016/j.neuroimage.2023.120456
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发表时间：
2023-11-20
期刊：
影响因子：
5.7
通讯作者：
Gao，Bo
中科院分区：
文献类型：
--
作者：
Zheng，Ya;Guan，Chenlu;Gao，Bo
感觉寻求和延迟折扣对不同的冒险行为有较强的预测作用。然而，感觉寻求和延迟折扣之间的关系仍然难以捉摸。在这里，我们通过考察高感觉寻求者(HSS；N=0.40)和低感觉寻求者(LSS；N=0.40)在行为任务和脑电延迟折扣任务中如何评估即时和延迟奖励的低额和高额来解决这个问题。虽然HSS和LSS在行为水平上表现出相似的贴现偏好，但当赚取的奖励较大时，HSS相对于LSS在神经水平上具有更大的延迟贴现效应。与LSS相比，HSS对大额即刻奖赏的大脑皮层超敏反应以及对奖赏大小的更强神经编码进一步证实了这种奖赏幅度的异常。我们的研究结果支持感觉寻求中的多动方法理论和最佳唤醒理论，并对针对感觉寻求减少不良适应风险行为的预防和干预具有一定的指导意义。
Sensation seeking and delay discounting are strong predictors of various risk-taking behaviors. However, the relationship between sensation seeking and delay discounting remains elusive. Here, we addressed this issue by examining how high sensation seekers (HSS;N= 40) and low sensation seekers (LSS;N= 40) evaluated immediate and delayed rewards with low and high amounts during a behavioral task and an EEG task of delay discounting. Although HSS and LSS exhibited comparable discounting preference at the behavioral level, HSS relative to LSS was associated with a greater delay discounting effect at the neural level when earned rewards were large. This abnormality of reward magnitude was further corroborated by an electrocortical hypersensitivity to large immediate rewards and a stronger neural coding of reward magnitude for HSS as compared to LSS. Our findings support both the hyperactive approach theory and the optimal arousal theory in sensation seeking and have implications for the prevention and intervention targeting sensation seeking to reduce maladaptive risk-taking behaviors.