景觀植物香氣對情緒與腦區反應的影響

The impact of Landscape Plant Fragrance on Emotion and Brain Responses

吳彥君(Yen-Chung Wu)

指導教授 ： 張俊彥

國立臺灣大學/生物資源暨農學院/園藝暨景觀學系/碩士(2019年)

https://doi.org/10.6342/NTU201900181

摘要

過去許多研究指出，接觸植物能獲得正向效益，若是具有香氣的香花植物，除能藉由視覺獲得益處，更能在嗅聞其香氣的過程中得到更多生心理效益。嗅覺與情緒有緊密的關係，嗅聞植物香氣能帶來不同的情緒感受，如減少焦慮(Lehrner et al., 2005; Field et al., 2005)、引發正面的情緒(Warrenburg, 2005; Weber & Heuberger, 2008)等效益，但是香花植物對情緒和腦區反應兩者之間的連結仍較不清楚，本研究的目的為探討不同植物氣味對受試者大腦活化反應和情緒的影響。
本研究以台灣景觀常見之香花植物花瓣：玫瑰、茉莉和百合為植物材料。利用功能性磁振造影(functional magnetic resonance imaging, fMRI)量測腦區反應作為生理指標，以及使用ScentMove情緒問卷為心理指標，探討不同真實香花植物氣味對受測者腦區反應和情緒的影響。
研究結果發現，在腦區反應方面，嗅聞植物氣味顯著地引起枕葉(Occipital Lobe)活化，並針對此結果進行後續精油和未告知氣味種類兩組的實驗操作，顯示使用鮮花作為氣味體可能引起人們對於此植物的想像，以及和過去的回憶做聯結。在情緒方面，玫瑰帶來浪漫、幸福和愉悅的感受；茉莉帶來清爽、潔淨和懷舊的感受；而百合帶來厭惡的感受。

關鍵字

香花植物 ； 玫瑰 ； 茉莉 ； 百合 ； 功能性磁振造影 ； 情緒

並列摘要

There are a great amount of research suggested that contacting with plants has positive benefits. Moreover, fragrant plants not only have visual benefits, but also have beneficial effects on smelling the aromas. There is a close relationship between olfaction and emotion, indicating that olfaction bringing up different emotional feelings. Many literatures have confirmed that the fragrance of plants can reduce anxiety (Lehrner et al., 2005; Field et al., 2005) and trigger positive emotion(Warrenburg, 2005；Weber& Heuberger, 2008)and other effects.However, the link between emotion and brain area responses of fragrant plants is still unclear. The purpose of this study is to explore the effects of different plant fragrance on the subjects’ brain activation responses and emotion.
This study used the common fragrant plants’ petals of Taiwanese landscape: rose, jasmine and lily as plant materials. The study used the functional magnetic resonance imaging (fMRI) machine to examine the brain activity while participants were smelling the fragrance, and used the emotional questionnaire (ScentMove) as a psychological indicator to explore the emotional state of smelling different true fragrant plants’ odors. This study tried to explore the effects of different true fragrant plant odors on the mood and brain response of the subjects.
The result showed that when smelling the common fragrant plant odor in Taiwan landscape caused the activation of the Occipital Lobe, and the subsequent experimental: essential oils and the unspoken odor species operation for this result showed that the use of common fragrant plants in Taiwan as odorants may cause people to imagine the plants and to connect with past memories. In terms of emotions, roses bring romance, happiness and pleasure feelings; jasmine brings refreshing, clean and nostalgic feelings; and lily brings a feeling of disgust.

並列關鍵字

fragrant plants ； rose ； jasmine ； lily ； functional magnetic resonance imaging (fMRI) ； emotion

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