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夜间光线如何影响情绪与认知
夜幕降临，万家灯火，电灯、电视、电脑、电子书、平板还有手机，它们发出的光线为我们照亮黑暗的同时，也会对我们心情和大脑运作产生影响，具体来说则是这些光的颜色。这一结论来自《神经科学》（Neuroscience）上发表的一项研究。
研究人员观察了视网膜中一群特别的光敏细胞ipRGC，它们负责调节昼夜节律，近期的一些证据表明这些细胞可能也对情绪和认知有影响。
为了探究夜间的光线颜色是如何对情绪产生影响的，研究人员利用仓鼠进行实验，分别在夜间将它们暴露于无光、红光、白光和蓝光的环境下，试验周期为4周。结果发现仓鼠大脑中……[查看全文]
Night Light Color Could Be Attitude Adjuster
Our homes glow at night. Lightbulbs, TVs, and now computers, e-readers, tablets and smartphones expose people to an increasing amount of light after dark. And the color of that light may influence mood and brain function. That’s according to a study in the Journal of Neuroscience.
Researchers looked at the role of specialized photosensitive cells in the retina. The cells, called ipRGCs, are responsible for regulating circadian rhythms. And recent evidence suggests these cells may also play a role in mood and cognition.
To test how nocturnal lighting color affects mood, the researchers exposed hamsters to nighttime conditions of no light, red light, white light or blue light for four weeks each. Hamsters exposed to red light at night...[full transcript]
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Bedrosian, T.A. et al. (2013) “Nocturnal light exposure impairs affective responses in a wavelength-dependent manner,” Journal of Neuroscience, 33(32), pp. 13081–13087.
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