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Elena Tsimakouridze* and Susan Larson
Our daily biological rhythm is synchronized to the 24-hour day on Earth, full of sunlight in the daytime and dark at night. Now that we are spending 90% of our time indoors, indoor lighting needs to adequately mimic sunlight to help maintain circadian rhythms, in addition to providing sufficient light for visual needs. Scientists have shown that light is a key signal for our body to function optimally and set our circadian clock to 24 hours to have a regular rhythm. Proper lighting indoors can help maintain this regular rhythm. Circadian lighting indoors should have the appropriate color temperature, spectral composition, brightness at the right time of day. There needs to be sufficient light stimulus during the daytime and a low level of light exposure in the evening and nighttime. Currently, the amount and type of light indoors in industrialized countries may be too low as reported by the International Commission on Illumination.
Published Date: 2023-02-06; Received Date: 2023-01-06