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Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness
Chang AM, Aeschbach D, Duffy JF, Czeisler CA · PNAS 112(4):1232–1237 · 2015
Key finding
Reading on a light-emitting device before bed delayed melatonin, lengthened sleep onset and reduced next-morning alertness vs a printed book.
Citation
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