• 인간식물환경학회지
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• 제24권4호
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• pp.429-439
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• 2021

Background and objective: This study verified the physiological and psychological effects of plant fragrance therapy to analyze whether the therapy has a forest healing effect on maladjusted soldiers. Methods: This study was conducted from March 14 to May 31, 2020 according to the Green Camp curriculum for 2 weeks per recruit class. Thus, plant fragrance therapy was implemented twice each for three recruit classes. Each session of the program was carried out for 4 hours from 1 p.m. to 5 p.m. The venue was the garden within the camp and the forest nearby. Forest healing activities using plant fragrances were led by 1 forest education specialist and 1 assistant. The effects of plant fragrance therapy for maladjusted soldiers were analzed analyzed by quantifying physiological and psychological changes through measuring brain waves and stress levels before and after the therapy. Results: As a result of analyzing BRQ and SQ to determine the physiological and psychological healing effect of plant fragrance therapy, both the left and right brain showed higher BRQ and SQ after the therapy with statistical significance. This indicates that plant fragrance therapy on maladjusted soldiers helped positively stabilize their negative psychological and behavioral dispositions, and stabilization of brain waves lowered physical and mental stress and improved self-regulation and immunity. On the other hand, there was no significant difference in ATO. This is the result of analyzing the stress-coping mechanism. Troubleshooting (t = -2.702, df = 61, p = .009), emotional remission (t = -2.173, df = 61, p = .034), pursuit of help (t = -3.286), df = 61, p = .002), and wishful thinking (t = -3.714, df = 61, p < .001) showed statistically significant results. Conclusion: Applying plant fragrance therapy to maladjusted soldiers positively stabilized their negative psychological and behavioral dispositions and helped their self-regulation. Thus, plant fragrance therapy has psychological and physical forest healing effect on maladjusted soldiers.

• 한국조경학회:학술대회논문집
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• 한국조경학회 2007년도 Journal of Landscape Architecture in Asia Vol.3
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• pp.214-219
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• 2007

Psychological and physiological effects of plants were studied by investigating human responses while observing plants. Eighteen healthy adult male(aged between $19{\sim}25$ years) participated in this study. Semantic differential method(SD method) and multi-channel near-infrared spectroscopy(NIRS) were used to survey verbal and non-verbal response, respectively. Cerebral hemodynamics as a new evaluation index of brain activity was recorded for right brain hemisphere where visual information is mainly delivered. Thirty seconds of cerebral blood flow in forty seven channels were calculated when watching five types of picture images with different rates of hedge against gray block wall; 0:10, 3:7, 5:5, 7:3, 10:0. In the SD results, similar evaluations were found in all subjects. However, the change of cerebral hemodynamics as a non-verbal response varied among subjects. Largely two patterns of hemodynamics change were found with increasing plants rate in picture images; group A showed significant decreases of blood flow volume in many cortical regions, Group B had significant increase of blood flow volume in the occipital region for the scenes seen comparatively more plant. Our findings on the cerebral hemodynamics may indicate that there are two patterns of brain activity during observation of plants; group A in which brain areas associated with visual information and thinking work simultaneously to the visual stimuli; group B in which brain areas associated only with visual information work.

• 한국조경학회지
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• 제38권4호
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• pp.1-10
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• 2010

녹지식물과 접함으로써 얻어지는 생리 심리적 효과를 과학적으로 실증하는 것은 녹지의 심리효과에 대한 객관적인 지식의 제공과 더불어 인간의 감성을 고려한 녹지공간을 창출에 있어 유용한 근거가 될 것이다. 본 연구에서는 15명의 한국인 남성을 대상으로 자연 발산하는 소나무 잎의 향기를 맡는 동안 대뇌활동(뇌혈액동태)과 자율신경계활동(혈압, 맥박, 아밀라제)을 측정하고, SD법(Semantic Differential method)과 POMS(Profile Of Mood States)를 이용하여 소나무 향기에 대한 인상 및 감정상태의 변화를 평가하였다. 그 결과, 소나무 향기는 대뇌활동에 있어 전두야의 감정, 판단, 운동을 담당하는 부위와 측두야의 기억을 담당하는 부위의 활성화를 초래하였다. SD법과 POMS에 의한 언어적 평가에서는 소나무 향기는 자연적이지만, 자극적이고 활발한 인상을 가지며, 활기를 주고 혼란한 정서를 안정시키는 향기로서 평가되었다. 한편, 자율신경계활동에서는 유의한 차이는 보이지 않았다. 실증된 결과를 통해, 소나무 향기가 우리의 생리 심리적인 측면에 활력을 주는 사실이 과학적으로 검증되었으며, 금후 감성을 고려한 녹지환경 디자인을 위한 기초적인 자료로 활용될 것을 기대한다.