Abstract:
Light regulates both image- and various non-image forming responses in humans, including acute effects on attention and affect. To advance the understanding of light\'s immediate effects, this systematic review describes the acute effects of monochromatic/narrow bandwidth and polychromatic white light during daytime on distinct aspects of attention (alertness, sustained attention, working memory, attentional control and flexibility), and measures of affect (self-report measures, performance-based tests, psychophysiological measures) in healthy, adult human subjects. Original, peer-reviewed (quasi-) experimental studies published between 2000 and May 2024 were included according to predefined inclusion and exclusion criteria. Study quality was assessed, and results were synthesized across aspects of attention and affect and grouped according to light interventions; monochromatic/narrowband-width or polychromatic white light (regular white, bright white, and white with high correlated color temperature (CCT)). Results from included studies (n = 62) showed that alertness and working memory were most affected by light. Electroencephalographic markers of alertness improved the most with exposure to narrow bandwidth long-wavelength light, regular white, and white light with high CCT. Self-reported alertness and measures of working memory improved the most with bright white light. Results from studies testing the acute effects on sustained attention and attentional control and flexibility were inconclusive. Performance-based and psychophysiological measures of affect were only influenced by narrow bandwidth long-wavelength light. Polychromatic white light exerted mixed effects on self-reported affect. Studies were strongly heterogeneous in terms of light stimuli characteristics and reporting of light stimuli and control of variables influencing light\'s acute effects.
摘要:
光调节人类的图像和各种非图像形成反应,包括对注意力和情感的急性影响。为了促进对光的直接影响的理解,本系统综述描述了单色/窄带宽和多色白光在白天对注意力的不同方面的急性影响(警觉性,持续关注,工作记忆,注意控制和灵活性),和影响措施(自我报告措施,基于性能的测试,心理生理措施)在健康的,成人受试者。Original,根据预定义的纳入和排除标准,纳入了2000年至2024年5月发表的同行评审(准)实验研究.评估研究质量,和结果在注意力和影响方面进行综合,并根据光干预进行分组;单色/窄带宽或多色白光(常规白光,明亮的白色,和白色具有高相关色温(CCT))。纳入研究(n=62)的结果表明,警觉性和工作记忆受光的影响最大。在暴露于窄带宽长波长光的情况下,警觉性的脑电图标记改善最大,普通的白色,和白光与高CCT。在明亮的白光下,自我报告的警觉性和工作记忆的测量得到了最大的改善。测试对持续注意力,注意力控制和灵活性的急性影响的研究结果尚无定论。基于性能和心理生理的影响措施仅受窄带宽长波长光的影响。多色白光对自我报告的影响产生混合影响。在光刺激特征和光刺激报告以及影响光急性效应的变量控制方面,研究具有很强的异质性。