Neuro-emotions Based on Electroencephalograph Response to Different Colors and Aromas of Rose in College Students:From the Perspective of Visual-olfactory Interaction
As the"queen of flowers",the rose is widely used in landscaping and home gardening.Its rich color and fragrance have a spe-cific healing effect.Emotions play an essential role in physical and mental health.At present,the influence of rose on people's emotions is mainly based on subjective questionnaires,starting from a single visual or olfactory perception.The research results cannot scientifically guide the practical application without the support of objective indicators from multi-sensory dimensions.From the perspective of visual and smell perception,this study studied whether different colors and aromas of rose have pos-itive effects on human neuro-emotional status and the difference of effects.Visual variables were divided into six color types:white,orange,pink,red,yellow,and blue-purple,and olfactory variables were divided into two flavor types,rose and fruit,forming 12 color and aroma interaction groups composed of six colors and two flavors.College students(n=240)were recruited and randomly assigned to 12 groups.The Emotiv Epoc X portable electroencephalography device was selected to measure six neuro-emotional indicators(engagement,stress,interest,excitement,focus,and relaxation)during pre-test stress and post-test recovery.The results showed that:(1)The combination of white,orange and rose,yellow-rose,orange-rose,white-fruit and orange-fruit can significantly improve people's participating emotions,and red,pink,and yellow have strong attraction and can induce the improvement of interest;(2)The effect of cool colors(white,blue-purple and pink)on lowering blood pressure and relaxing mood is much higher than that of warm colors such as red,orange and yellow,and the effect of fruity flavor on reliev-ing stress is more prominent;(3)The warm colors represented by red and yellow have the best effect on inducing excitement and focused emotional expression,and the combination of these warm colors and the two fragrances can stimulate emotions,more conducive to the recovery of attention,and can supplement directed attention;(4)The effect of color on neural emotion is more robust,and the effect of the combination of color and aroma on neural emotion is not a simple additive effect.The results of this study can guide the reasonable combination and allocation of roses with different colors and aromas,induce people's positive emotions,and improve the health benefits of green space.