Sleep-dependent modulation of affectively guided decision-making.
Sleep-dependent modulation of affectively guided decision-making.
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DOI：
10.1111/j.1365-2869.2011.00921.x
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发表时间：
2012-02
影响因子：
4.4
通讯作者：
Spencer RM
中科院分区：
文献类型：
--
作者：
Pace-Schott EF;Nave G;Morgan A;Spencer RM
在当前的睡眠研究中，一个非常有趣的问题是睡眠是否以及如何促进复杂的认知技能，如决策。爱荷华州赌博任务(IGT)被用来调查睡眠对情感引导决策的影响。在对IGT进行了简短的标准化预览后，参与者经历了12小时的延迟，其中包括正常夜间睡眠(睡眠组；N=28)或白天连续清醒(唤醒组；N=26)。延迟后，两组都进行了完整的IGT。为了控制昼夜节律效应，另外两组受试者在早上(N=17)或晚上(N=21)同时执行预习和完整任务。在IGT中，展示了4副牌。从2个“优势牌”中抽出，会产生较低的游戏货币奖励，偶尔会有较低的损失，在多次抽签时，会有净收益。从“不利的”牌面抽签会产生高额回报，偶尔会出现高额亏损，在多次抽签后，还会出现净亏损。参与者被指示尽可能多地获胜和避免失败，更好的表现被定义为更有利的平局。相对于清醒组，睡眠组表现出更好的行为结果(更有利的抽签)和更好的规则理解(盲目地从任务完成时写下的陈述判断)。这两项指标都没有区分这两个对照组。这些结果说明了睡眠在优化决策中的作用，潜在的情绪或认知过程的变化可能会带来这一好处。
A question of great interest in current sleep research is whether and how sleep might facilitate complex cognitive skills such as decision-making. The Iowa Gambling Task (IGT) was used to investigate effects of sleep on affect-guided decision-making. After a brief standardized preview of the IGT that was insufficient to learn its underlying rule, participants underwent a 12-hr delay containing either normal night’s sleep (Sleep-group; N=28) or continuous daytime wake (Wake-group; N=26). Following the delay, both groups performed the full IGT. To control for circadian effects, two additional groups performed both the preview and the full task either in the morning (N=17) or the evening (N=21). In the IGT, 4 decks of cards were presented. Draws from 2 “advantageous decks” yielded low play-money rewards, occasional low losses and, over multiple draws, a net gain. Draws from “disadvantageous” decks yielded high rewards, occasional high losses and, over multiple draws, a net loss. Participants were instructed to win and avoid losing as much as possible and better performance was defined as more advantageous draws. Relative to the wake group, the sleep group showed both superior behavioral outcome (more advantageous draws) and superior rule understanding (blindly judged from statements written at task completion). Neither measure differentiated the two control groups. These results illustrate a role of sleep in optimizing decision-making, a benefit that may be brought about by changes in underlying emotional or cognitive processes.
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