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dc.contributor.authorVethe, Daniel
dc.contributor.authorDrews, Henning Johannes
dc.contributor.authorScott, Janine Linda
dc.contributor.authorEngstrøm, Morten
dc.contributor.authorHeglum, Hanne Siri Amdahl
dc.contributor.authorGrønli, Janne
dc.contributor.authorWisor, J.P.
dc.contributor.authorSand, Trond
dc.contributor.authorLydersen, Stian
dc.contributor.authorKjørstad, Kaia
dc.contributor.authorFaaland, Patrick
dc.contributor.authorVestergaard, Cecilie Lund
dc.contributor.authorLangsrud, Knut
dc.contributor.authorKallestad, Håvard
dc.identifier.citationScientific Reports. 2022, 12 (1), .en_US
dc.description.abstractEvening exposure to short-wavelength light has disruptive effects on circadian rhythms and sleep. These effects can be mitigated by blocking short-wavelength (blue) frequencies, which has led to the development of evening blue-depleted light environments (BDLEs). We have previously reported that residing 5 days in an evening BDLE, compared with residing in a normal indoor light environment of similar photopic lux, advances circadian rhythms and increases the duration of rapid eye movement (REM) sleep in a randomized cross-over trial with twelve healthy participants. The current study extends these findings by testing whether residing in the evening BDLE affects the consolidation and microstructure of REM sleep in the same sample. Evening BDLE significantly reduces the fragmentation of REM sleep (p = 0.0003), and REM sleep microarousals in (p = 0.0493) without significantly changing REM density or the latency to first REM sleep episode. Moreover, the increased accumulation of REM sleep is not at the expense of NREM stage 3 sleep. BDLE further has a unique effect on REM sleep fragmentation (p = 0.0479) over and above that of circadian rhythms phase-shift, indicating a non-circadian effect of BDLE. If these effects can be replicated in clinical populations, this may have a therapeutic potential in disorders characterized by fragmented REM sleep.en_US
dc.publisherSpringer Natureen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleEvening light environments can be designed to consolidate and increase the duration of REM-sleepen_US
dc.title.alternativeEvening light environments can be designed to consolidate and increase the duration of REM-sleepen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalScientific Reportsen_US

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