LED色光對生理及心理影響之初探研究

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Title:	LED色光對生理及心理影響之初探研究 A Study of the Psychological and Physiological Influences of LED Color Lighting
Authors:	陳俊宏 Chen, Chun-Hung
Contributors:	資訊傳播學系
Keywords:	生理回饋 LED照明心理影響生理反應 Psychological Physiological LED Color Lighting
Date:	2013-07
Issue Date:	2013-11-07 14:51:04 (UTC+8)
Abstract:	過去研究發現，房間燈光的色溫會影響人們生理及心理的活動。Mukae及Sato (1992)測量在不同色溫的房間燈光下心律的變化，作為自主神經系統活動的指標。發現，人們的心跳速率在6700K的燈光下比在3000K的燈光下來得高。 Deguchi及Sato (1992)也發現待在7500K燈光下的受試者，其contingent negative variation (CNV)活動較大。Noguchi及Sakaguchi (1996)則發現色溫會影響中央神經系統的活動。由於LED燈的發展與應用已愈來愈普遍，甚於LED燈可以調節色光的特性，如何在節能之外，善用色光光線的效能，發揮其最大邊際效益，探討LED色光對人們心理感覺上的影響已成為刻不容緩的研究議題。雖然過去已有許多研究資料指燈光會影響人們的生理活動，但卻大多專注在燈光色溫的影響。直至今日，改變燈光色彩尚是室內設計師決定一空間氣氛很重要的因素，卻仍少有人探討燈光色彩對人生理上的影響，更遑論心理上的影響。本研究將以心電圖(electrocardiogram)及膚電阻抗反應(galvanic skin response)、末梢指溫( Skin Temperature)來測量受試者在不同實驗情境下之生理反應。本研究將探討不同色彩的LED燈是否會在人們心理上產生不同的感受？如果有不同，其影響是否有共通的趨勢？本研究發現從語意量表中有關情緒判讀<愉悅的-不愉悅 >、 <緊繃-放鬆 >、 <嫌惡-喜歡 >、<興奮的-冷靜 >、<安全-焦慮 >等詞彙，對照各種色光的生理反應，可判讀出紅色讓人感到不愉悅、緊繃、嫌惡、興奮、焦慮的，其生理反也呈現平均心跳加速，意味著讓人感覺到緊張及不安的；青色、白色、黃色、紫色讓人感到愉悅、放鬆、喜歡、冷靜、安全的，其生理反應也呈現指溫上升、膚電反應下降、平均心跳也下降的趨勢，也代表著青色、白色、黃色、紫色等色光確實讓人的生心理感受到放鬆的狀態。 Past research confirmed that color lighting of interior space has physiological and psychological effects on humans. Mukae & Sato (1992) have tested the heart rate variability (HRV) as an index of the response of the autonomic nervous system under different color temperature settings. They found that the HRV response was higher under the setting of a color temperature of 6700K, compared against those of 3000K. Likewise, Deguchi & Sato (1992) discovered that contingent negative variation (CNV), an index of activity of the central nervous system, is relatively high in room light of a color temperature under 7500K. Noguchi and Sakaguchi (1996) also found that color temperature affects the central nervous system. Regarding the trend of increased usage of LED and their special characteristics of adjusting color light and saving energy, while their greatest advantage lies in energy efficiency, bringing these benefits into full play requires a discussion on the effect of color light on humans’ physiological and psychological conditions and thus makes it a research topic of urgent interest. Although much research data of the past indicates that lighting can have physiological and psychological effects, most of it focuses on the effect of color temperature. Until today, changing color lighting remains an important decision factor for interior designers in creating the room climate, but few people have started discussions of its physiological and psychological effects on humans. This research investigates the physiological effects of color lighting on humans, using electrocardiogram (ECG), galvanic skin response (GSR), and skin temperature for measuring subjects response in different experimental settings.Can different color lighting LED evoke different psychological responses? If so, can any trend be identified from those results?
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