2011 Fiscal Year Final Research Report
Analyses of Spectral Properties of Circadian Photoentrainment and Lighting Applications
| Project/Area Number |
21560613
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Architectural environment/equipment
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| Research Institution | Kyushu University |
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Principal Investigator |
KOGA Yasuko 九州大学, 人間環境学研究院, 准教授 (60225399)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAO Motoharu 東海大学, 情報理工学部, 准教授 (90408013)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 建築環境・設備 / 生理学 / 概日リズム / 視覚 / 網膜神経節細胞 / ipRGC / 分光感度 / 瞳孔反射 |
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| Research Abstract |
For lighting applications to keep appropriate circadian rhythms, we examined luminous environment conditions effective in circadian photoentrainment and vigilance during the daytime. It is indicated that spectral properties of circadian photoentrainment and vigilance are highly sensitive to optical radiation of short wavelength, and described as a bimodal sensitivity curve due to phototransduction of intrinsically photosensitive retinal ganglion cells and cones. This is different from previous research results that have shown unimodal action spectra. Careful lighting design is required in order to create the comfortable luminous environment with blue-enriched light.
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[Presentation]2010
Author(s)
山本宏亮、古賀靖子、山本宏亮、古賀靖子
Organizer
2010年度日本建築学会大会
Place of Presentation
富山大学
Year and Date
2010-09-11
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