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F.Lux Makes your screen less bluish

F.Lux Makes your screen less bluish

More to follow

f.lux makes your computer screen look like the room you’re in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again.

https://justgetflux.com/dlwin.html

 

 

Study: Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness

http://www.pnas.org/content/early/2014/12/18/1418490112

PDF: http://www.pnas.org/content/early/2014/12/18/1418490112.full.pdf

According to the study:

  • While people are using an iPad at night their body produces 55% less melatonin
  • After shutting off the lights (and the iPad), they took an extra 10 minutes to fall asleep
  • When they did fall asleep, they had less REM sleep during the night
  • The next morning, the iPad readers felt sleepier, and it took them “hours longer” to feel alert. The book readers quickly felt more alert immediately upon waking.
  • When it was time for bed the next night, the iPad readers’ circadian clocks were delayed by more than 90 minutes. Their bodies began to feel tired an hour and a half later than normal, because they were exposed to alerting light from the iPad the night before.

Each participant was tested with both the iPad and reading a book. Books on paper did not suppress melatonin or cause participants to feel groggy the next day.

The 5-day study was conducted by Anne-Marie Chang, Daniel Aeschbach, Jeanne F. Duffy, and Charles A. Czeisler at Brigham and Women’s Hospital (a Harvard Medical School teaching hospital).

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