22 diciembre 2014
Use of a light-emitting electronic device (LE-eBook) in the hours before bedtime can adversely impact overall health, alertness, and the circadian clock which synchronizes the daily rhythm of sleep to external environmental time cues, according to new research that compared the biological effects of reading an LE-eBook compared to a printed book.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/kkx5MSGuolc/141222131348.htm
