光只能刺激你大脑的日夜平衡（生理节奏循环）。
Light will only stimulate your brain's day/night balance (circadian cycle).
蓝色的光——比如来自蓝天的光线——对生物钟的刺激最强烈。
Blue light - such as the light from the blue sky - is best for stimulating the circadian system.
一项新的研究表明，称为球状闪电的、神秘光的浮动斑点，也许只是大脑简单地受到了过度刺激所产生的幻觉。
Mysterious floating blobs of light known as ball lightning might simply be hallucinations caused by overstimulated brains, a new study suggests.
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