This paper aims to clarify what kinds of design elements in environments stimulate mental activity. This study examined the effects on the brain activity when wearable optical topography was worn in different color environments. The subjects' mental activity in the prefrontal cortex was measured during working memory tasks in four colored booths: red, yellow, blue, and white.
By performing physiological and psychological analyses, this study obtained the following results.
1. The yellow booth can activate mental activity the most.
2. Fatigue increases due to the stimulation of brain activity.
3. "Stimulating" environmental factors can be assumed to affect elements in mental activity, especially information processing.
