目前有許多文獻指出在靜態照明(固定色溫)下，高色溫的光可使人的警覺度提升，而色溫差最小到2000K即可使警覺度有顯著差異。然而，動態照明卻沒有足夠的實驗去探討，本實驗即以LED調光做出不同平均色溫、變化範圍的動態照明，在下午時段測量人的腦波以取得警覺度、情緒的客觀變化。求出動態照明平均色溫6500K與靜態照明6500K警覺度達顯著差異的範圍，並發現以變異係數為推估不同平均色溫的動態照明較佳的指標。此外，動態照明對於人的情緒也有正面的影響。

Higher correlated color temperature (CCT) lighting condition induces higher arousal level. The smallest increment of significantly increasing arousal level is 2000K. However, there are not much research about dynamic lighting. In this experiment, using LED color mixing as dynamic lighting source, we can make different average correlated color temperatures and different correlated color temperature variation ranges and compare to static lighting with the same average correlated color temperatures. We found the significant alertness range between dynamic and static lighting. Coefficient of Variation (CV) is a better index than variation range to compare with different average correlated color temperature. Besides, dynamic lighting performs better than static lighting in mood.

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