Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7499
Title: Analysis of the relationship between daylight illuminance and cognitive, affective and physiological changes in visual display terminal workers
Authors: Öner, Merve
Kazanasmaz, Zehra Tuğçe
Leccese, F.
Salvadori, G.
Öner, Merve
Kazanasmaz, Zehra Tuğçe
Izmir Institute of Technology. Architecture
Keywords: Daylighting
Luminous environment
Cognitive performance
Cognitive load
Ocular behaviour
Visual display terminal
Issue Date: Dec-2019
Publisher: SAGE Publications Inc.
Source: Öner, M., Kazanasmaz, T., Leccese, F., and Salvadori, G. (2019). Analysis of the relationship between daylight illuminance and cognitive, affective and physiological changes in visual display terminal workers. Building Services Engineering Research and Technology, 1-16. doi:10.1177/0143624419894441
Abstract: This study explored the impact of daylight illuminance on cognitive load during visual display terminal use by means of various physiological, performance and subjective measures. Repeated-measures design was adopted to identify the impact of variations in daylight levels that were manipulated through the shading system configurations (shading-on; shading-off). A total of 30 subjects performed visual and cognitive demanding tests. Performance measures were supported by subjective data and eye-related measures during the experimental analysis. Results revealed that the use of a shading system had positive impact on sustained attention. Concerning ocular measures, percentage of eye closure values showed opposite tendencies among vigilance and sustained attention demanding tests. Eye aspect ratio-max and blink duration were significantly correlated with reported glare sensation. In all tests, eye aspect ratio-max was found significantly higher in lower illuminances. Search velocity was significantly correlated with ocular variables in higher illuminances whereas sustained attention showed an opposite trend. This, initially, explains that even slight differences in daylight illuminance might have distinctive effects on the relationship between different groups of assessment variables while measuring cognitive load. Secondly, it proves the significance of carrying out sensitive experiments in terms of both light levels and test characteristics.
URI: https://doi.org/10.1177/0143624419894441
https://hdl.handle.net/11147/7499
Appears in Collections:Architecture / Mimarlık
Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection

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