Autonomic Nervous Responses According to Preference for the Odor of Jasmine Tea

Abstract

The effect of jasmine tea odor on the autonomic nervous system was investigated by a power spectral analysis of the heart rate variability. We assigned eight volunteers to two groups with either a predilection for or antipathy toward the jasmine tea odor. We tested both high- and low-intensity jasmine tea odors. The low-intensity odor was produced by diluting 20-fold the jasmine tea used for the high-intensity odor test. The low-intensity odor produced an increase in parasympathetic nervous activity in both the predilection and antipathy groups. The high-intensity odor produced an increase in parasympathetic nervous activity in the predilection group, but an increase in sympathetic nervous activity in the antipathy group. The odor of Chinese green tea, a basic ingredient of jasmine tea, produced no effects similar to those of the jasmine tea odor. These results suggest that the jasmine tea odor activated the parasympathetic nerve, whereas the higher-intensity odor activated the sympathetic nerve in those subjects who disliked the odor.

Physiological and Psychological Effects of Rose ‘Wishing’ Flowers and Their Hydrosols on the Human Autonomic Nervous System and Mood State

“…This increase in SNA can be attributed to the stresses caused by the enforced sitting quietly during the test time or the unaccustomed measurement situation. Similar increases in sympathetic nerve parameters have been observed previously (Inoue et al, 2003;Kuroda et al, 2005;Tomi et al, 2011). The effect of rose samples on human SNA varied between the samples (p ≈ 0.001, two-way ANOVA).…”

“…Power spectral analysis on R-R intervals was applied to monitor autonomic nervous system activity. This method is generally applied in the evaluation of aromatherapy effects on human (Inoue et al, 2003;Kuroda et al, 2005;Tomi et al, 2011). Active Tracer (GMS, Japan) was used for continuous electrocardiograph (ECG) monitoring.…”

Polyphenol Content and Antioxidant Effects in Herb Teas

“…given diet including some common fruits, vegetables and beverages [12]. The presented herb teas have various effects [13][14][15][16][17][18][19][20][21][22]. Tables 1 and 2 show that some of them, Arabian jasmine, Guava, Hardy rubber tree, Japanese persimmon, Oolong tea and Puerh tea, have high total polyphenol content and antioxidant activities.…”

Effects of CH-19 Sweet, a Non-Pungent Cultivar of Red Pepper, on Sympathetic Nervous Activity, Body Temperature, Heart Rate, and Blood Pressure in Humans

“…Power spectral analysis has been used to detect changes in autonomic nervous activity in response to the intake of foods or the inhalation of odors in humans. [14][15][16][17] Details of the power spectral analysis procedure have been fully described by Moritani et al 18,19) A power spectral analysis by fast Fourier transformation was performed on consecutive 256-s time series of the R-R interval data obtained during the test. To evaluate the autonomic nervous system activity of each subject in the present study, we analyzed both low-frequency (LFC, 0.035-0.15 Hz) and high-frequency (HFC, 0.15-0.5 Hz) components, the latter being the respiration-linked component.…”