Lin, J orcid.org/0000-0002-1633-4553 and Westland, S orcid.org/0000-0003-3480-4755 (2020) Effect of long-wavelength light on electroencephalogram and subjective alertness. Lighting Research & Technology, 52 (6). pp. 763-774. ISSN 1477-1535
Abstract
This study extends previous findings on the effect of different levels of short-wavelength light on human alertness. This study explores the alerting ability of long-wavelength light at two levels (40 lx and 160 lx). Eight subjects took part in the 60-minute experiment for each of two nights, during which their objective alertness and subjective alertness were evaluated using electroencephalogram and questionnaire. Results show that both levels increased electroencephalogram beta power, which shows a different pattern compared with the previous findings on short-wavelength light. These results strongly suggest that although short-wavelength light may impact alertness through circadian system, long-wavelength light will have to achieve that through other pathways. The further comparison between current and previous results also suggests that long-wavelength light is just as strong on acute alerting ability, as shown by electroencephalogram measures and self-rating questionnaire, as short-wavelength light.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Chartered Institution of Building Services Engineers 2020. This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Arts, Humanities and Cultures (Leeds) > School of Design (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 01 May 2020 13:43 |
Last Modified: | 18 Jul 2022 12:44 |
Status: | Published |
Publisher: | SAGE Publications |
Identification Number: | 10.1177/1477153520902255 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:160093 |