基于不同生理指标的室内气味环境对人员情绪的影响研究
Research on impact of indoor odor environment on personnel’semotions based on different physiological indicators
摘要：
室内气味环境是建筑室内环境的重要组成部分。本文研究了气味对人员情绪的影响,并探究了这种影响与生理指标之间的关联性。选用薄荷和甜橙精油作为气味刺激源,将尿液多巴胺和心率变异性频域指标LF/HF(低频与高频的比值)作为生理指标,结合主观问卷进行了研究。研究结果表明:相较于无气味环境,甜橙和薄荷气味令喜欢这2种气味的受试者感到更加愉悦和放松,此时受试者的多巴胺浓度增大、心率变异性频域指标LF/HF下降;而对于不喜欢薄荷的受试者,薄荷气味会使其情绪低落,多巴胺浓度和心率变异性频域指标LF/HF具有与积极情绪相反的变化趋势。通过营造建筑室内气味环境改善人员情绪具有可行性,同时为利用尿液多巴胺和心率变异性频域指标LF/HF作为客观参数辅助分析气味环境下人员的情绪变化提供参考。
Abstract：
Indoor odor environment is a critical component of the building’s indoor environment. This study investigates the impact of odors on personnel’s emotions and explores the relationship between this impact and physiological indicators. Peppermint and sweet orange essential oils are selected as odor stimulus sources, and urine dopamine and heart rate variability (HRV) frequency domain index LF/HF (ratio of low frequency to high frequency) are used as physiological indicators, combined with subjective questionnaires. The results indicate that, compared with the odorless environment, the presence of sweet orange and peppermint odors makes the subjects who like these two odors feel more pleasant and relaxed. In this context, their dopamine concentrations increases, and the HRV frequency domain index LF/HF decreases. For the subjects who do not like peppermint, the peppermint odor makes them depressed, and the dopamine concentration and HRV frequency domain index LF/HF show the opposite trends to positive emotions. It is feasible to improve personnel’s emotions by creating an indoor odor environment in buildings, and at the same time, it provides a reference for using urine dopamine and HRV frequency domain index LF/HF as objective parameters to assist in analysing the personnel’s emotional changes in the odor environment.
Keywords:indoor odor environment; personnel; emotion; physiological indicator; urine dopamine; heart rate variability (HRV)