Secreted in the evening and the night, melatonin suppresses activity of the mesolimbic dopamine pathway, a brain pathway involved in reward processing. However, exposure to bright light diminishes-or even prevents-melatonin secretion. Thus, we hypothesized that reward processing, in the evening, is more pronounced in bright light (vs. dim light). Healthy human participants carried out three tasks that tapped into various aspects of reward processing (effort expenditure for rewards task [EEfRT]; two-armed bandit task [2ABT]; balloon analogue risk task [BART). Brightness was manipulated within-subjects (bright vs. dim light), in separate evening sessions. During the EEfRT, participants used reward-value information more strongly when they were exposed to bright light (vs. dim light). This finding supported our hypothesis. However, exposure to bright light did not significantly affect task behavior on the 2ABT and the BART. While future research is necessary (e.g., to zoom in on working mechanisms), these findings have potential implications for the design of physical work environments. (PsycINFO Database Record

中文翻译：

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暴露在强光下会使基于工作量的决策产生偏差。

褪黑素在晚上和晚上分泌，抑制中脑边缘多巴胺途径（参与奖励过程的大脑途径）的活性。但是，暴露在强光下会减少甚至阻止褪黑激素的分泌。因此，我们假设在傍晚时分的奖励处理在明亮的光线下（相对于昏暗的光线）更为明显。健康的人类参与者执行了三个任务，这些任务涉及奖励处理的各个方面（奖励任务的精力支出[EEfRT]；两臂匪徒任务[2ABT]；气球模拟风险任务[BART]。在单独的夜​​间课程中，在对象内部（明亮与昏暗的灯光）中调节亮度。在EEfRT期间，参与者暴露于强光（相对于昏暗的光线）时会更强烈地使用奖励价值信息。这一发现支持了我们的假设。然而，暴露在强光下不会明显影响2ABT和BART上的任务行为。尽管未来的研究是必要的（例如，放大工作机制），但这些发现对物理工作环境的设计具有潜在的影响。（PsycINFO数据库记录