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Decrease in fMRI brain activation during working memory performed after sleeping under 10 lux light

Authors
Kang, Seung-GulYoon, Ho-KyoungCho, Chul-HyunKwon, SoonwookKang, JunePark, Young-MinLee, EunilKim, LeenLee, Heon-Jeong
Issue Date
9-11월-2016
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v.6
Indexed
SCIE
SCOPUS
Journal Title
SCIENTIFIC REPORTS
Volume
6
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/86849
DOI
10.1038/srep36731
ISSN
2045-2322
Abstract
The aim of this study was to investigate the effect of exposure to dim light at night (dLAN) when sleeping on functional brain activation during a working-memory tasks. We conducted the brain functional magnetic resonance imaging (fMRI) analysis on 20 healthy male subjects. All participants slept in a polysomnography laboratory without light exposure on the first and second nights and under a dim-light condition of either 5 or 10 lux on the third night. The fMRI scanning was conducted during n-back tasks after second and third nights. Statistical parametric maps revealed less activation in the right inferior frontal gyrus (IFG) after exposure to 10-lux light. The brain activity in the right and left IFG areas decreased more during the 2-back task than during the 1- or 0-back task in the 10-lux group. The exposure to 5-lux light had no significant effect on brain activities. The exposure to dLAN might influence the brain function which is related to the cognition.
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College of Medicine > Department of Medical Science > 1. Journal Articles
Graduate School > Department of Biomedical Sciences > 1. Journal Articles

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