摘要(英) |
This study simulates an indoor reading environment by using desk lamps and ceiling lights to create different illuminance uniformity conditions as lighting scenarios. These scenarios include focused light with only the desk lamp on, uniform light with only the ceiling light on, and mixed light with both the desk lamp and ceiling light on. It aims to explore the physiological and psychological effects of lighting on users and the differences in users’ levels of concentration under various scenarios. The study will adopt the lighting human factors assessment techniques previously used by the research team in the laboratory. Participants will be recruited to take static paper tests, and the impact of the designed scenarios on the participants will be analyzed.
In terms of data measurement, a Neurosky EEG device will be used to measure and record the participants′ brainwave signals while they perform intelligence tests, d2-tests, and during rest sessions in different lighting scenarios to facilitate subsequent analysis. The experimental analysis will employ empirical mode decomposition (EMD), Hilbert transform (HT), probability density function (PDF), and receiver operating characteristic curve (ROC curve) for computation. Objective indicators include the performance on intelligence tests and d2-tests, the area under the curve (AUC) of the receiver operating characteristic curve, and the attention score derived from brainwave features. Subjective indicators will be based on self-assessment questionnaires filled out by the participants. Both objective and subjective indicators will be analyzed using statistical software SPSS to conduct variance analysis and determine whether there are significant differences among the different scenarios, thereby investigating the impact of lighting on the participants.
The results indicate that, in terms of objective indicators, there is no significant classification difference in brainwaves between different scenarios during concentration and rest. The performance on intelligence tests and d2-tests also shows no significant differences between scenarios, although there is a practice effect observed in the d2-test. The calculation of attention scores reveals that participants find it harder to concentrate during focused activities in uniform lighting scenarios, and they find it harder to relax during rest sessions in concentrated lighting scenarios. Regarding subjective indicators, mixed lighting is preferred for environmental illumination, and participants report that their eyes are less likely to feel dry or strained. |
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