If not adjust the ceiling, then the psychological impact of another factor to adjust the light source is entirely --- little effort. A U.S. study of 21,000 people found that the short duration of bright sunshine than areas to live in sunny areas of student reading and math to high-7% -18%; and neurologists in the Netherlands to 612 households tune-liang and increasing the lighting equipment, the prevalence rate of Alzheimer's by 5% lower, depression decreased by 19%. The researchers pointed out that light can affect the body's secretion of glucocorticoids, thus affecting the extent of the brain and emotional strength to wake up. Therefore, the researchers suggested that the issue of working hours can use the Blu-ray diode and the whole spectrum of the fluorescent lamp, which can upset the appropriate lamp or over-emphasize the bright light more.
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