"Research shows that lighting brightness, color temperature, timing, rhythm, and locations of indoor lighting can all improve mood. Brightness and color temperature affect mood through the brain's non-visual pathways, starting when light hits special receptors at the back of the eye."
"Color temperatures of light, measured in Kelvin (K), range from 2200K, equivalent to candlelight, to 4000K, which resembles bright full-spectrum morning sunlight. Bright white light can help prevent and reduce depressive symptoms in people with seasonal affect disorder (SAD)."
"Recent studies indicate that bright bluish light reduces depressive symptoms and enhances positive emotions and alertness in individuals without depression, highlighting the importance of light exposure in mood regulation."
Americans spend over 90 percent of their time indoors, making indoor lighting a crucial factor for mood improvement. Brightness and color temperature of light affect mood through non-visual pathways to the brain's clock center. Bluish light increases alertness, while warm light calms. Studies show bright white light can reduce depressive symptoms and enhance positive emotions, even in those without depression. The timing and rhythm of light exposure also play a role in mood enhancement, emphasizing the importance of optimizing indoor lighting environments.
Read at Psychology Today
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