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Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting

Future automotive interior lighting might have the potential to go beyond decorative purposes by influencing alertness, circadian physiology, and sleep. As the available space in the interior of an automobile for lighting applications is limited, understanding the impact of various luminous surface...

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Detalles Bibliográficos
Autores principales: Weng, Michael, Schöllhorn, Isabel, Kazhura, Maryia, Cardini, Brian B., Stefani, Oliver
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9680305/
https://www.ncbi.nlm.nih.gov/pubmed/36412580
http://dx.doi.org/10.3390/clockssleep4040047
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author Weng, Michael
Schöllhorn, Isabel
Kazhura, Maryia
Cardini, Brian B.
Stefani, Oliver
author_facet Weng, Michael
Schöllhorn, Isabel
Kazhura, Maryia
Cardini, Brian B.
Stefani, Oliver
author_sort Weng, Michael
collection PubMed
description Future automotive interior lighting might have the potential to go beyond decorative purposes by influencing alertness, circadian physiology, and sleep. As the available space in the interior of an automobile for lighting applications is limited, understanding the impact of various luminous surface sizes on non-image-forming effects is fundamental in this field. In a laboratory study using a within-subject design, 18 participants were exposed to two bright light conditions with different solid angles and one dim light condition in a balanced, randomized order during the course of the evening. Our results demonstrate that both light conditions significantly increased subjective alertness and reduced salivary melatonin concentration but not cognitive performance compared to dim light. The solid angle of light exposure at constant corneal illuminance only affected visual comfort. While subjective alertness can be increased and melatonin can be attenuated with rather small luminaires, larger solid angles should be considered if visual comfort is a priority.
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spelling pubmed-96803052022-11-23 Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting Weng, Michael Schöllhorn, Isabel Kazhura, Maryia Cardini, Brian B. Stefani, Oliver Clocks Sleep Article Future automotive interior lighting might have the potential to go beyond decorative purposes by influencing alertness, circadian physiology, and sleep. As the available space in the interior of an automobile for lighting applications is limited, understanding the impact of various luminous surface sizes on non-image-forming effects is fundamental in this field. In a laboratory study using a within-subject design, 18 participants were exposed to two bright light conditions with different solid angles and one dim light condition in a balanced, randomized order during the course of the evening. Our results demonstrate that both light conditions significantly increased subjective alertness and reduced salivary melatonin concentration but not cognitive performance compared to dim light. The solid angle of light exposure at constant corneal illuminance only affected visual comfort. While subjective alertness can be increased and melatonin can be attenuated with rather small luminaires, larger solid angles should be considered if visual comfort is a priority. MDPI 2022-10-26 /pmc/articles/PMC9680305/ /pubmed/36412580 http://dx.doi.org/10.3390/clockssleep4040047 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Weng, Michael
Schöllhorn, Isabel
Kazhura, Maryia
Cardini, Brian B.
Stefani, Oliver
Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting
title Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting
title_full Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting
title_fullStr Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting
title_full_unstemmed Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting
title_short Impact of Evening Light Exposures with Different Solid Angles on Circadian Melatonin Rhythms, Alertness, and Visual Comfort in an Automotive Setting
title_sort impact of evening light exposures with different solid angles on circadian melatonin rhythms, alertness, and visual comfort in an automotive setting
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9680305/
https://www.ncbi.nlm.nih.gov/pubmed/36412580
http://dx.doi.org/10.3390/clockssleep4040047
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