Abstract
Nowadays, people want to reduce fatigue in use of computer devices by improving software. We already proposed the method that reduces fatigue using color effect in our previous study. Furthermore, we developed software that changes its background color gradually. The gradual change in background color was expected to entrain psycho-physiological states of a user. In this study, effectiveness of the method was investigated through experiment. The experiment compared cases of gradually changed color with cases of not changed color. Part of results showed that change in color elicited higher effects on subjective evaluation: The condition changes its color from white to blue elicited higher subjective "calm" and "not tired" values than the condition presenting only blue. However, the result contradicted between physiological evaluation and subjective evaluation. To enhance the effect of the entrainment, some improvements of charge in color must be needed.
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