Centre for Chronobiology, Psychiatric Hospital of the University of Basel, Basel, Switzerland.
Prog Brain Res. 2011;190:119-33. doi: 10.1016/B978-0-444-53817-8.00007-4.
Light elicits robust nonvisual effects on numerous physiological and behavioral variables, such as the human sleep-wake cycle and cognitive performance. Light effects crucially rely on properties such as dose, duration, timing, and wavelength. Recently, the use of methods such as fMRI to assess light effects on nonvisual brain responses has revealed how light can optimize brain function during specific cognitive tasks, especially in tasks of sustained attention. In this chapter, we address two main issues: how light impinges on cognition via consolidation of human sleep-wake cycles; and how light directly impacts on sleep and cognition, in particular in tasks of sustained attention. A thorough understanding of how light affects sleep and cognitive performance may help to improve light settings at home and at the workplace in order to improve well-being.
光会对许多生理和行为变量产生强烈的非视觉影响，例如人类的睡眠-觉醒周期和认知表现。光的影响主要取决于剂量、持续时间、时间安排和波长等因素。最近，使用 fMRI 等方法评估光对非视觉大脑反应的影响，揭示了光如何在特定认知任务中优化大脑功能，特别是在持续注意力任务中。在这一章中，我们将讨论两个主要问题：光如何通过巩固人类的睡眠-觉醒周期来影响认知；以及光如何直接影响睡眠和认知，特别是在持续注意力任务中。深入了解光如何影响睡眠和认知表现，可能有助于改善家庭和工作场所的光照设置，以提高幸福感。
