壓力可能導致包括身體疾病、心理失調、工作效率及人際關係之退步、一般適應力減低及免疫系統減弱等情形（Powell,1983）。可見當個人產生壓力時，無形中已對人類身心健康造成一定程度的威脅，影響所及可能威脅到個體生理、心理、情緒及日常生活的運作。而目前市面上所屬產品主要以冥想及芳香療法為主，在科學的驗證上相對較少，對於生理回饋裝置在工業設計領域中應當有更大發揮的空間。
本研究採用國際情緒圖片系統方法，依序利用9點制SAM價性量表對受測者的情緒反應做測量，並依照過去學者研究(Choi et al., 2017)重新建立相關研究流程探討結果，不同情感圖片15張(1931、6350、3170、3000、9410、7175、7000、7187、2190、2440、8185、8179、8030、4800、5800)下受測者(6位)的情緒反應與9項心率變異性生理指標(RRI、HR、SDNN、RMSSD、NN50、TP、LF、HF、LF/HF)之間相關性。接著透過二因子混合設計ANOVA分析檢定圖片與色溫對心率變異性之功效，從中找出生理回饋裝置新的使用性及可能性。
本次實驗結果在9點制SAM價性量表中，以喚醒度方面對於9項心率變異性生理指標中的RRI與HR相關性達顯著水準，其中RRI又為ECG心電圖參數分析的基礎，衍伸出時域分析生理指標HR，因此後續檢測以心率變異性生理指標中的心跳(HR)為主。
在二因子混合設計ANOVA分析中得知圖片與色溫在心率變異性生理指標心跳(HR)下之交互作用，圖片及色溫單獨對於心率變異性生理指標心跳(HR)之主要效果。在圖片方面，不同的15張圖片情境下之心率變異性生理指標心跳(HR)有不同的趨勢。在色溫方面，實驗組4000K色溫相對於其他組別(0K、3000K、6500K)在心率變異性生理指標心跳(HR)之平均數達明顯差異，實驗組4000K平均數較高，這可能代表適當的色溫在不同情境中，對人體心率變異性影響較小且對人體較健康。

Stress can lead to physical illnesses, psychological disorders, poor work efficiency, regression of relationships, general resilience and weakened immune systems (Powell, 1983/1996). It can be seen that when individuals are under stress, they have invisibly caused a certain degree of threat to human physical and mental health, affecting the operation of individuals' physical, psychological, emotional and daily life. At present, the products on the market mainly focus on meditation and aromatherapy, and there is relatively little scientific verification. For physiological feedback devices, there should be more room for industrial design.
This study adopts the international emotional picture system method; uses the Self-Assessment Manikin to measure the emotional response of the subject, and re-establishes the relevant research process according to past scholars' research (Choi et al., 2017); the correlation between the emotional responses from the test objects (6) under 15 different emotion pictures (1931, 6350, 3170, 3000, 9410, 7175, 7000, 7187, 2190, 2440, 8185, 8179, 8030, 4800, 5800) and the Heart Rate Variability Physiologic Index (RRI, HR, SDNN, RMSSD, NN50, TP, LF, HF, LF/HF). Then, through the two-factor mixed design ANOVA analysis, the effect of pictures and color temperatures on heart rate variability is analyzed, and find out the new usability and possibility of the physiological feedback device.
In the Self-Assessment Manikin, the result of this experiment reached a significant level of RRI and HR in the 9 Heart Rate Variability Physiologic Index in terms of arousal. RRI is the basis of ECG parameter analysis, and derived the time domain to analyze the physiological index HR, so the subsequent tests are based on the heart rate (HR) in the Heart Rate Variability Physiologic Index.
In the two-factor mixed design ANOVA analysis, we are aware that the interaction between the image and color temperature under the Heart Rate Variability Physiologic Index (HR), the main effect of the picture and the color temperature to the Heart Rate Variability Physiologic Index heart rate (HR). In terms of pictures, the Heart Rate Variability Physiologic Index (HR) has different trends in 15 different picture situations. In terms of color temperature, the Empirical Group 4000K color temperature is significantly different from the other groups (0K, 3000K, 6500K) in the average value of Heart Rate Variability Physiologic Index heart rate (HR); the average value made by Empirical Group 4000K is higher, which may represent appropriate color temperature has less impact on the Heart Rate Variability under different scenario and is better to human health.

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