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cheapbag214s · Posted: Tue 18:34, 05 Nov 2013 Post subject: U.S. researchers say. Randy Nelson

Different shades of light at night can affect a person's mood
COLUMBUS, Ohio, Aug. 8 () -- Different shades of light at night can affect a person's mood, but those exposed to total darkness fared the best,[url=http://www.isabelmarantsneakersbootss.com/]isabel marant boots[/url], U.S. researchers say. Randy Nelson, co-author of the study and professor of neuroscience and psychology at The Ohio State University in Columbus, examined the role of specialized photosensitive cells in the retina -- called ipRGCs -- that don't have a major role in vision, but detect light and send messages to a part of the brain that helps regulate the body's circadian clock. This is the body's master clock that helps determine when people feel sleepy and awake.Other research suggested these light-sensitive cells also send messages to parts of the brain that play a role in mood and emotion."Light at night may result in parts of the brain regulating mood receiving signals during times of the day when they shouldn't," said study co-author Tracy Bedrosian, a former graduate student at Ohio State, who is now a postdoctoral researcher at the Salk Institute. "This may be why light at night seems to be linked to depression in some people."The study, published in The Journal of Neuroscience,[url=http://www.parajumpersjackenoutlet.de/]parajumpers online shop[/url], found hamsters exposed to red light at night had significantly less evidence of depressive-like symptoms and changes in the brain linked to depression,[url=http://www.christianlouboutinonlineshop.de/]christian louboutin online shop[/url], compared with those that experienced blue or white light, but the hamsters that fared the best were those that had total darkness at night."If you need a night light in the bathroom or bedroom, it may be better to have one that gives off red light rather than white light," Bedrosian said.