Physiological and Psychological Effects of Visual Stimulation with Green Plant Types

Ji-Eun Jeong and Sin-Ae Park
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Ji-Eun Jeong: Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea
Sin-Ae Park: Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea

IJERPH, 2021, vol. 18, issue 24, 1-12

Abstract: This study was designed to assess the physiological and psychological benefits of visually looking at foliage plants in adults. This study involved 30 adults in their 20s (11 males, 19 females), and using a crossover design, participants looked at four different types of visual stimuli, namely, real plants, artificial plants, a photograph of plants, and no plants for 5 min. Brain waves were measured while viewing each type of plant, and a subjective evaluation of emotions was performed after each visual stimulus. Semantic differential methods (SDM) and Profile of Mood States (POMS) were used for the subjective evaluation. During the real plant visual stimulation, relative theta (RT) power spectrum was increased in the bilateral occipital lobes, while relative high beta (RHB) power spectrum was reduced in the left occipital lobe, indicating a reduction in stress, anxiety, and tension. The subjective survey results revealed that when looking at real plants, the participants exhibited significantly higher “comfort,” “natural,” and “relaxed” scores as well as an increase in positive mood conditions. In conclusion, among the four types of plants, visual stimulation with real plants induces physiological relaxation in adults and has a positive psychological effect.

Keywords: brain waves; electroencephalography; horticultural therapy; profile of mood states; semantic differential methods (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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