An Effect of Native Herbal Essential Oil of Chrysanthemum boreale Makino EEG and Autonomic Nervous System Responses

To verify efficacy of psychological aroma therapy on natural essential yuju oil extracted by expression method, this study examined the effect on ECG and EEG responses to 20 men and women. Natural essential oil diluted with 10% ethyl alcohol was input on flavor test sheet, which the subjects smelled in 3 minutes interval randomly. And it was measured with a calibrator. As a result, AFA and RFA, Upper Alpha waves that increased comfort and concentration, increased significantly. Autonomic nervous system HRV had significantly reduced sympathetic nerve that is activated at arousal and stressful situation. Accordingly, the expressing essential oil having original natural scent of yuju is assessed as having efficacy of reducing stress and of improving concentration and learning ability.