翻訳と辞書 Words near each other ・ Electronic Letters on Computer Vision and Image Analysis ・ Electronic leviathan ・ Electronic libretto ・ Electronic license plate ・ Electronic lien and title ・ Electronic Life ・ Electronic line judge ・ Electronic literature ・ Electronic Literature Organization ・ Electronic lock ・ Electronic logbook ・ Electronic mailing list ・ Electronic markets ・ Electronic Markets (journal) ・ Electronic media ・ Electronic media and sleep ・ Electronic Media Monitoring Centre ・ Electronic Media Union of Trinidad and Tobago ・ Electronic Meditation ・ Electronic meeting system ・ Electronic message journaling ・ Electronic messaging ・ Electronic Miscellaneous Document ・ Electronic mixer ・ Electronic money ・ Electronic Money Association ・ Electronic Municipal Market Access ・ Electronic music ・ Electronic music (disambiguation) ・ Electronic Music Foundation Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Electronic media and sleep ： ウィキペディア英語版 Electronic media and sleep The use of computers (including devices such as smart phones) before bed has been associated with a reduction in the hours of sleep experienced by frequent users, along with a decreased quality of sleep. The results of computer use at night have been linked with a myriad of negative consequences because of reduced sleep, ranging from an increase in obesity to a lack of energy during the day. Some researchers believe this could be avoided by limiting computer use prior to sleep. ==Basics of sleep needs== An adult is expected to sleep 7–9 hours per night to be properly rested, while adolescents from the age of 10-17 need 8.5-9.5 hours of sleep, with the hours needed decreasing with increased age. Failing to meet these sleep needs has been linked with depression, obesity, diabetes, and cardiovascular disease. An important factor in sleep is melatonin, a hormone produced in the pineal gland that is associated with sleep facilitation. During the daytime, blood melatonin levels are barely detectable, but at night, melatonin levels are high. This phenomenon is due to light's effect on melatonin production. If there is sufficient light, then melatonin production is halted. It is possible for artificial light to be bright enough to have this effect. Melatonin is not the only component of sleep facilitation. Activities performed on electronics can stimulate the brain, so that the user does not become relaxed, and so is unable to sleep. Choosing another activity, such as reading, may enhance sleep. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Electronic media and sleep」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.