The visual effects of plant variegation on human psycho-physiological responses

Colors are one of the things that play a part in our daily lives. Studies have documented that exposure to plants had positive effects on human health. This study investigated how foliage color stimuli that included green and green-red and green-white influenced selected psychological and physiological responses in 28 college students in their twenties. Each plant was presented for 1 min, during the exposure time, eye movements were recorded by eye mark recorder. While, near-infrared spectroscopy was used in order to monitor the brain activity in the frontal, temporal, parietal and occipital lobes. The results revealed that different plantscape colors stimulated different psycho-physiological reactions. People prefer green to green-red and green-white plants. Furthermore, green plants were more effective in relaxing the body compared with the other colors evidenced by sedation of cerebral blood flow in the feeling area.