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

What this work gives Aellic

Laboratory comparison of reading on a light-emitting eReader versus a printed book in the hours before bed: with the eReader, participants took longer to fall asleep and showed reduced melatonin secretion, later circadian timing and lower next-morning alertness. Tests the light mechanism, not smartphone use as such.

Where this sits in the engine

1 declared site: constants and thresholds in the code that point at this entry.

• Behaviour Suggested routines 1 site