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Effects of Color Temperature and Brightness on Electroencephalogram Alpha Activity in a Polychromatic Light-emitting Diode.

Authors
 Jin Young Park  ;  Ra-Yeon Ha  ;  Vin Ryu  ;  Eosu Kim  ;  Young-Chul Jung 
Citation
 Clinical Psychopharmacology and Neuroscience, Vol.11(3) : 126-131, 2013 
Journal Title
 Clinical Psychopharmacology and Neuroscience 
ISSN
 1738-1088 
Issue Date
2013
Abstract
OBJECTIVE: It has been reported that working and learning efficiency might be increased through artificially controlling the color temperature and brightness of light. However, the neurological bases of these outcomes are not well established. Our study was designed to observe whether electroencephalogram (EEG) alpha frequency, as a candidate biological marker, demonstrates significant changes in response to alterations of specific light parameters. METHODS: Thirty-two healthy subjects performed cognitive tasks under four different polychromatic light conditions: a combination of two different levels of color temperature (2766K vs. 5918K) and brightness (300 lux vs. 600 lux). Spectrum analyses were performed on alpha frequency. RESULTS: Subjects reported that they felt more pleasant in bright conditions and more relaxed in warm color temperature conditions. Our findings indicate that alpha power increases in warm, low-light and cool, high-light conditions, and there is a significant interaction between color temperature and brightness. CONCLUSION: EEGs might serve as a useful biological marker for further research related to the effects of polychromatic light on cognitive function.
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DOI
10.9758/cpn.2013.11.3.126
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Psychiatry (정신과학교실) > 1. Journal Papers
Yonsei Authors
김어수(Kim, Eosu) ORCID logo https://orcid.org/0000-0001-9472-9465
박진영(Park, Jin Young) ORCID logo https://orcid.org/0000-0002-5351-9549
유빈(Ryu, Vin)
정영철(Jung, Young Chul) ORCID logo https://orcid.org/0000-0002-0578-2510
하라연(Ha, Ra Yeon)
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/88961
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