You have trouble falling asleep? Your children are hyperactive playing with the tablet before bedtime?
Do you use your smartphone or tablet late evening? Twilight may be a solution for you!
Recent research suggests that exposure to the blue light before bed can distort your natural (circadian) rhythm and cause inability to fall asleep.
The cause is the photoreceptor in your eyes, called melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480nm range that can suppress the production of melatonin - a hormone responsible for your healthy sleep-wake cycles.
Do you use your smartphone or tablet late evening? Twilight may be a solution for you!
Recent research suggests that exposure to the blue light before bed can distort your natural (circadian) rhythm and cause inability to fall asleep.
The cause is the photoreceptor in your eyes, called melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480nm range that can suppress the production of melatonin - a hormone responsible for your healthy sleep-wake cycles.
In experimental scientific studies, it was shown that the average person reading on a tablet or smart phone for a couple of hours before bedtime can find their delayed sleep about an hour.
The Twilight application shields your device adapt to the time of day. It filters the stream of blue light emitted from your phone or tablet after sunset and protects your eyes with a mild and pleasant red filter. The intensity of the filter is easily adjusted to the cycle of the sun based on your sunset and sunrise local time.
Get more Twilight
1) bed reading: Twilight is nicer on the eyes for night reading. Especially as it is able to reduce the backlight of the well below the capacity of backligt controls display on your screen
2) AMOLED screens: We tested Twilight on an AMOLED display for 2.5 years with no sign of fatigue or over-combustion. If Twilight properly configured causes less light emission (allowing dimming) with more equal distribution of light (the dark areas of the screen such that the status bar is tinted). This can actually increase your life AMOLED screen.
Basics of the circadian rhythm and role of melatonin
http://en.wikipedia.org/wiki/Melatonin
http://en.wikipedia.org/wiki/Melanopsin
http://en.wikipedia.org/wiki/Circadian_rhythms
http://en.wikipedia.org/wiki/Circadian_rhythm_disorder
Authorizations
- Location - finding your current sleep / time Surise
- Applications running - to stop Twilight in selected applications
- Writing Settings - set backlight
- Network - smartlight access (Philips HUE) to protect against light blue households
Automation (Tasker or other)
https://sites.google.com/site/twilight4android/automation
Scientific research related
Amplitude reduction and phase shifts melatonin, cortisol and other circadian rhythms after a gradual advance of sleep and exposure to light in Derk-Jan Dijk humans, 2.012 & Co
Exposure to ambient light before bedtime shortened melatonin and Onset Removes melatonin in humans Time Joshua J. Gooley Kyle Chamberlain, Kurt A. Smith & Co, 2011
Effect of light on human physiology circadian Jeanne F. Duffy, Charles A. Czeisler 2,009
Efficacy of a single sequence of light intermittent light pulses for delaying the circadian phase in humans Claude Gronfier, Kenneth P. Wright & Co 2.009
Intrinsic period and light intensity determines the phase relationship between melatonin and sleep in humans Kenneth P. Wright, Claude Gronfier & Co 2009
The incidence of sleep timing and Bright Light exposure Attentional impairment during night work Nayantara Santhi, Daniel Aeschbach & Co 2008
Shortwave light sensitivity of the circadian rhythm, the pupil and visual awareness in humans lacking an Farhan H. Zaidi Outer Retina & Co 2007
High sensitivity of the human circadian rhythm of melatonin reset short wavelength to light. Lockley SW, Brainard GC, Czeisler CA. 2,003
Sensitivity of the human circadian pacemaker to the night light: the reset phase and melatonin suppression Jamie M Zeitzer Derk-Jan Dijk 2000 & Co
For a desktop alternative, try RedShift (Linux) or Windows application, which has no relation to this project whatsoever, whose name can not be said out loud or whispered it trademark, lets call Lord Voldemort blue filtering applications Flux .Guessed it? Let us know in the comments.
