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A Study of the Effects of Different Indoor Lighting Environments on Computer Work Fatigue

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  • Yuan Fang

    (School of Engineering Practice and Innovation-Entrepreneurship Education, Dalian Polytechnic University, Dalian 116034, China)

  • Chang Liu

    (School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, China)

  • Chengcheng Zhao

    (School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, China)

  • Hongyu Zhang

    (School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, China)

  • Weizhen Wang

    (Human Factors and Intelligent Design Research Center, Dalian Polytechnic University, Dalian 116034, China)

  • Nianyu Zou

    (School of Information Science and Engineering, Dalian Polytechnic University, Dalian 116034, China)

Abstract

The indoor lighting environment is a key factor affecting human health and safety. In particular, people have been forced to study or work more for long periods of time at home due to the COVID-19 pandemic. In this study, we investigate the influence of physical indoor environmental factors, correlated color temperature (CCT), and illumination on computer work fatigue. We conducted a within-subject experiment consisting of a 10 min-long task test under two different illumination settings (300 lx and 500 lx) and two CCTs (3000 K and 4000 K). Physiological signals, such as electroencephalogram (EEG), electrocardiograph (ECG), and eye movement, were monitored during the test to objectively measure fatigue. The subjective fatigue of eight participants was evaluated based on a questionnaire conducted after completing the test. The error rate of the task test was taken as the key factor representing the working performance. Through the analysis of the subjective and objective results, computer work fatigue was found to be significantly impacted by changes in the lighting environment, where human fatigue was negatively correlated with illumination and CCT. Improving the illumination and CCT of the work environment, within the scope of this study, helped to decrease the fatigue degree—that is, the fatigue degree was the lowest under the 4000 K + 500 lx environment, while it was relatively high at 3000 K + 300 lx. Under indoor environment conditions, the CCT factor was found to have the greatest effect on computer work fatigue, followed by illumination. The presented results are expected to be a valuable reference for improving the satisfaction associated with the lighting environment and to serve as guidance for researchers and reviewers conducting similar research.

Suggested Citation

  • Yuan Fang & Chang Liu & Chengcheng Zhao & Hongyu Zhang & Weizhen Wang & Nianyu Zou, 2022. "A Study of the Effects of Different Indoor Lighting Environments on Computer Work Fatigue," IJERPH, MDPI, vol. 19(11), pages 1-18, June.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:11:p:6866-:d:831286
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    References listed on IDEAS

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    1. Carmen Llinares & Nuria Castilla & Juan Luis Higuera-Trujillo, 2021. "Do Attention and Memory Tasks Require the Same Lighting? A Study in University Classrooms," Sustainability, MDPI, vol. 13(15), pages 1-13, July.
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