Detailed Information

Cited 58 time in webofscience Cited 65 time in scopus
Metadata Downloads

Exposure to dim artificial light at night increases REM sleep and awakenings in humans

Authors
Cho, Chul-HyunLee, Heon-JeongYoon, Ho-KyoungKang, Seung-GulBok, Ki-NamJung, Ki-YoungKim, LeenLee, Eun-Il
Issue Date
2-Jan-2016
Publisher
TAYLOR & FRANCIS INC
Keywords
REM; sleep; Awakening; polysomnography; dim artificial light at night
Citation
CHRONOBIOLOGY INTERNATIONAL, v.33, no.1, pp 117 - 123
Pages
7
Indexed
SCI
SCIE
SCOPUS
Journal Title
CHRONOBIOLOGY INTERNATIONAL
Volume
33
Number
1
Start Page
117
End Page
123
URI
https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/6826
DOI
10.3109/07420528.2015.1108980
ISSN
0742-0528
1525-6073
Abstract
Exposure to artificial light at night (ALAN) has become increasing common, especially in developed countries. We investigated the effect of dALAN exposure during sleep in healthy young male subjects. A total of 30 healthy young male volunteers from 21 to 29 years old were recruited for the study. They were randomly divided into two groups depending on light intensity (Group A: 5 lux and Group B: 10 lux). After a quality control process, 23 healthy subjects were included in the study (Group A: 11 subjects, Group B: 12 subjects). Subjects underwent an NPSG session with no light (Night 1) followed by an NPSG session randomly assigned to two different dim light conditions (5 or 10 lux, dom lambda: 501.4 nm) for a whole night (Night 2). We found significant sleep structural differences between Nights 1 and 2, but no difference between Groups A and B. Exposure to dALAN during sleep was significantly associated with increased wake time after sleep onset (WASO; F = 7.273, p = 0.014), increased Stage N1 (F = 4.524, p = 0.045), decreased Stage N2 (F = 9.49, p = 0.006), increased Stage R (F = 6.698, p = 0.017) and non-significantly decreased REM density (F = 4.102, p = 0.056). We found that dALAN during sleep affects sleep structure. Exposure to dALAN during sleep increases the frequency of arousals, amount of shallow sleep and amount of REM sleep. This suggests adverse effects of dALAN during sleep on sleep quality and suggests the need to avoid exposure to dALAN during sleep.
Files in This Item
There are no files associated with this item.
Appears in
Collections
1. Basic Science > Department of Preventive Medicine > 1. Journal Articles
2. Clinical Science > Department of Psychiatry > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Yoon, Ho Kyoung photo

Yoon, Ho Kyoung
Ansan Hospital (Department of Psychiatry, Ansan Hospital)
Read more

Altmetrics

Total Views & Downloads

BROWSE