Effect of lighting illuminance and colour temperature on mental workload in an office setting

Abstract The mental workload of subjects was tested under different lighting conditions, with colour temperatures ranging from 3000 to 6500 K and illuminance ranging from 300 to 1000 lx. We used both psychological and physiological responses for evaluation. The former was based on NASA Task Load Ind...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jiayi Bao, Xinbo Song, Yan Li, Yinjie Bai, Qianxiang Zhou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/85e6c9ae7c9a48afb904f02637bd7c65
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:85e6c9ae7c9a48afb904f02637bd7c65
record_format	dspace
spelling	oai:doaj.org-article:85e6c9ae7c9a48afb904f02637bd7c652021-12-02T16:06:44ZEffect of lighting illuminance and colour temperature on mental workload in an office setting10.1038/s41598-021-94795-02045-2322https://doaj.org/article/85e6c9ae7c9a48afb904f02637bd7c652021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94795-0https://doaj.org/toc/2045-2322Abstract The mental workload of subjects was tested under different lighting conditions, with colour temperatures ranging from 3000 to 6500 K and illuminance ranging from 300 to 1000 lx. We used both psychological and physiological responses for evaluation. The former was based on NASA Task Load Index (NASA-TLX, NASA), and the latter was based on the electroencephalogram (EEG) P3b analysis of event-related potentials using the “oddball” paradigm experimental task. The results show that as illuminance increases, and the response time becomes longer with a colour temperature of 3000 K (P < 0.01). However, when the colour temperature is set at 6500 K, the response time becomes shorter as the illuminance increases (P < 0.01). P3b amplitudes were significantly affected by colour temperature (P = 0.009) and illuminance (P = 0.038) levels. The highest amplitudes occurred at 3000 K and 750 lx, which is consistent with the trend shown by the subjective scale. The data analysis of error rates is not significant. These results suggest that an office environment with a colour temperature of 3000 K and illumination of 750 lx, which exerts the lowest mental workload, is the most suitable for working. However, the interaction between colour temperature and illuminance in affecting the mental workload of participants is not clear. This work provides more appropriate lighting choices with colour temperature and illuminance to reduce people’s mental workload in office settings.Jiayi BaoXinbo SongYan LiYinjie BaiQianxiang ZhouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiayi Bao Xinbo Song Yan Li Yinjie Bai Qianxiang Zhou Effect of lighting illuminance and colour temperature on mental workload in an office setting
description	Abstract The mental workload of subjects was tested under different lighting conditions, with colour temperatures ranging from 3000 to 6500 K and illuminance ranging from 300 to 1000 lx. We used both psychological and physiological responses for evaluation. The former was based on NASA Task Load Index (NASA-TLX, NASA), and the latter was based on the electroencephalogram (EEG) P3b analysis of event-related potentials using the “oddball” paradigm experimental task. The results show that as illuminance increases, and the response time becomes longer with a colour temperature of 3000 K (P < 0.01). However, when the colour temperature is set at 6500 K, the response time becomes shorter as the illuminance increases (P < 0.01). P3b amplitudes were significantly affected by colour temperature (P = 0.009) and illuminance (P = 0.038) levels. The highest amplitudes occurred at 3000 K and 750 lx, which is consistent with the trend shown by the subjective scale. The data analysis of error rates is not significant. These results suggest that an office environment with a colour temperature of 3000 K and illumination of 750 lx, which exerts the lowest mental workload, is the most suitable for working. However, the interaction between colour temperature and illuminance in affecting the mental workload of participants is not clear. This work provides more appropriate lighting choices with colour temperature and illuminance to reduce people’s mental workload in office settings.
format	article
author	Jiayi Bao Xinbo Song Yan Li Yinjie Bai Qianxiang Zhou
author_facet	Jiayi Bao Xinbo Song Yan Li Yinjie Bai Qianxiang Zhou
author_sort	Jiayi Bao
title	Effect of lighting illuminance and colour temperature on mental workload in an office setting
title_short	Effect of lighting illuminance and colour temperature on mental workload in an office setting
title_full	Effect of lighting illuminance and colour temperature on mental workload in an office setting
title_fullStr	Effect of lighting illuminance and colour temperature on mental workload in an office setting
title_full_unstemmed	Effect of lighting illuminance and colour temperature on mental workload in an office setting
title_sort	effect of lighting illuminance and colour temperature on mental workload in an office setting
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/85e6c9ae7c9a48afb904f02637bd7c65
work_keys_str_mv	AT jiayibao effectoflightingilluminanceandcolourtemperatureonmentalworkloadinanofficesetting AT xinbosong effectoflightingilluminanceandcolourtemperatureonmentalworkloadinanofficesetting AT yanli effectoflightingilluminanceandcolourtemperatureonmentalworkloadinanofficesetting AT yinjiebai effectoflightingilluminanceandcolourtemperatureonmentalworkloadinanofficesetting AT qianxiangzhou effectoflightingilluminanceandcolourtemperatureonmentalworkloadinanofficesetting
_version_	1718384852099661824

Effect of lighting illuminance and colour temperature on mental workload in an office setting

Ejemplares similares