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Effects of Green Walls on Prefrontal Cerebral Hemodynamics in Hospital Workers
윤초혜,정이봄,강민지,김수진,최효빈,이주영 인간식물환경학회 2022 인간식물환경학회지 Vol.25 No.6
Background and objective: Artificial environments have been known to negatively affect neuropsychological activities. Healthcare workers who are under high psychological and physiological stress often spend long hours at a time. Recently, many studies have been conducted to reveal the healing effects of natural environments, but few studies have been conducted on healthcare workers. Therefore, this study aims to investigate the effect of green walls in medical facilities on the hemodynamics of the prefrontal cortex in healthcare workers. Methods: Eleven healthy adults working in a medical institution participated in the experiment, in which they rested for 10 minutes in a room with green walls and in a control room. To compare the physiological and psychological changes between the green wall room and the control room, we used various measurements, such as near-infrared spectroscopy in the prefrontal area (NIRS), heart rate variability (HRV), blood pressure (BP), and pulse rate (PR). Psychological tests were also conducted using the Profile of Mood States (POMS), the State-Trait Anxiety Inventory (STAI), the Perceived Restorativeness Scale (PRS), and the Zucherman Inventory of Personal Reaction Scale (ZIPERS). Results: The oxyhemoglobin concentration in the frontal lobe significantly decreased on both the left and right sides in the green wall room compared to the control room. Green walls significantly activated the parasympathetic nervous system and inhibited the sympathetic nervous system compared to the control room. In addition, psychological reactions increased positive emotions and decreased negative emotions. Conclusion: Green walls in medical facilities could be an effective way to promote physiological relaxation and health by reducing physiological hemodynamics in the prefrontal cortex evoked by psychological stress in healthcare workers. This study implies that green walls can be used as an effective means of stress reduction and relaxation.
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전두엽 혈류 측정을 통한 산림녹지 내 수경관 유형별 치유 효과 분석
강민지,윤초혜,이정원,이주영 한국환경과학회 2024 한국환경과학회지 Vol.33 No.1
When situated in green landscapes, water bodies play a crucial role in positively influencing mood and mental health, yet research on the cognitive mechanisms underlying these therapeutic effects is lacking. This study is intended to examine differences in brain function among adult males exposed to forest landscapes with or without water bodies. The wooded landscapes included views of a waterfall, a valley, and a forest without water. The control group was exposed to a local urban landscape. Twelve adult males participated in a field experiment in which prefrontal cortex (PFC) activity was measured using near-infrared spectroscopy (NIRS). In the experiment, participants engaged in low-intensity walking in three forested areas with similar vegetation and climatic conditions. Participants showed significant differences in left PFC activity depending on whether they were in the three forested landscapes or in the control landscape (P < 0.01). An analysis of variance (ANOVA) confirmed that significantly lower left PFC activity was recorded in the wooded landscape containing a water view . Notably, the lowest PFC values recorded in the landscape with a waterfall view suggest that landscapes with dynamic water flow may be associated with greater therapeutic benefits in terms of PFC activity than static landscapes. Our results underscore that water is a critical aspect of a landscape due to its therapeutic benefits and should be incorporated in the planning and design of green spaces for health promotion.
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임호연,윤초혜,한상빈,이여원,이주영 한국환경과학회 2024 한국환경과학회지 Vol.33 No.2
This study aimed to investigate the impact of pavement design changes on user perceptions, with the objective of enhancing safety in urban streetscape. A total of 72 participants were recruited, and the study focused on alleyways in areas with a high risk of crime. Employing the Semantic Differential (SD) methodology, an assessment was conducted to gauge participants' perceptions of three different pavement types (A-type, B-type, C-type) as well as the existing pavement. The results indicated that the C-type pavement, characterized by vibrant and harmonious color palettes and patterns, elicited the highest levels of perceived safety, comfort, and openness among users. This signifies that physical environmental improvements through color design can mitigate the feelings of insecurity and foster emotional stability. Therefore it is recommended to implement various color schemes and pattern designs to road surface for enhancing user safety in high-risk urban areas.
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지하철 역사 내 벽면녹화가 생리심리학적 스트레스 완화에 미치는 영향
김용진,강민지,정이봄,윤초혜,전성민,이주영 한국환경과학회 2022 한국환경과학회지 Vol.31 No.3
This study was conducted to investigate the response of the human body to stress induced by wall recording of subway stations in the city center. The experiment was conducted as a simulation exercise, and six images were selected and produced based on Subway Line 2, a representative underground space in Seoul. The study participants included 24 male and female college students. A three-minute experiment was conducted, during which the participants were shown the control image and green wall image once each. To measure psychological status, the following measurement indicators were used: Semantic Differential, Positive Affect and Negative Affect Schedule and State-Trait Anxiety Inventory. Physiological changes were investigated by tracking participants’ heart rate and blood pressure. Results showed that parasympathetic and sympathetic nerves were activated in the presence of the green wall in the subway station. The psychological evaluation analysis revealed that negative affect toward underground space decreased, while positive affect increased. This study found that the green wall in subway stations has a stable effect on the human body, both psychologically and physiologically. In the future, green walls in underground spaces can be used to reduce psychological stress and increase physiological relaxation.
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김수진(Su Jin Kim),최효빈(Hyo Bhin Choi),강민지(Minji Kang),윤초혜(Cho Hye Youn),정이봄(Lee Bom Chung),이주영(Juyoung Lee) 인간식물환경학회 2022 인간식물환경학회지 Vol.25 No.3
Background and objective: With an increasing interest in health-related issues in urban environments, there has beengrowing attention to the relationship between green space and psychological states of residents in apartment complexes. This study investigated resident perceptions of green space and their stress responses in an apartment complex. Methods: The psychological stress responses that arose during residents' observation of two types of environments-anindoor living room and an outdoor green space-were investigated through a field experiment. Sixteen healthy adultfemales in child care participated in the within-group comparison study. The semantic differential (SD) method was usedto examine environmental perception, and three psychological tests were administered to quantify stress responses to thetwo environments: the Profile of Mood States (POMS), the Revised Perceived Restorativeness Scale (RPRS), and theZuckerman Inventory of Personal Reactions Scale (ZIPERS). Results: Feeling of pleasure, familiarity, and beauty showed significantly higher scores in outdoor green space than indoorspace. In the POMS analysis, significantly more positive mood states were found in outdoor green space than indoor space. The ZIPERS and RPRS data showed that outdoor green space was more suitable for fatigue recovery because it relievednegative emotions and psychological stress to a greater degree than indoor space. Conclusion: This field study suggested that green spaces have the potential to reduce psychological stress and restorepsychological well-being in female residents. Despite limited exposure to the green space in the apartment complex,improved mood states and positive health-related effects were observed among the participants.
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