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Effects of Olfactory Stimulation with Aroma Oils on Psychophysiological Responses of Female Adults

Author

Listed:
  • Na-Yoon Choi

    (Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea)

  • Yu-Tong Wu

    (Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea)

  • Sin-Ae Park

    (Department of Bio and Healing Convergence, Graduate School, Konkuk University, Seoul 05029, Korea
    Department of Systems Biotechnology, Konkuk University, Seoul 05029, Korea)

Abstract

This study investigated the effects of olfactory stimulation with aroma oils on the psychophysiological responses in women. Ten aromatic oils (lavender, rosemary, rose, eucalyptus, jasmine, geranium, chamomile, clary sage, thyme, and peppermint) were used on 23 women aged between 20 and 60 years. They inhaled the scent for 90 s through a glass funnel attached to their lab apron, 10 cm below their nose, while the pump was activated. Electroencephalography, blood pressure, and pulse rate were measured before and during inhalation of the aroma oils. The relative alpha (RA) power spectrums indicating relaxation and resting state of the brain significantly increased when lavender, rosemary, eucalyptus, jasmine, chamomile, clary sage, and thyme oils were inhaled compared to those of before olfactory stimulation. The ratio of alpha to high beta (RAHB), an indicator of brain stability and relaxation, significantly increased when rosemary, jasmine, clary sage, and peppermint oils were inhaled. The relative low beta (RLB) power spectrum, an indicator of brain activity in the absence of stress, significantly increased when stimulated with lavender, rosemary, rose, and geranium scents. Further, systolic blood pressure significantly decreased after introduction of all 10 types of aromatic oils, which indicates stress reduction. Thus, olfactory stimulation with aroma oil had a stabilizing effect on the prefrontal cortex and brain activity and decreased systolic blood pressure.

Suggested Citation

  • Na-Yoon Choi & Yu-Tong Wu & Sin-Ae Park, 2022. "Effects of Olfactory Stimulation with Aroma Oils on Psychophysiological Responses of Female Adults," IJERPH, MDPI, vol. 19(9), pages 1-11, April.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:9:p:5196-:d:801480
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    Citations

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    Cited by:

    1. Na-Yoon Choi & Sin-Ae Park & Ye-Rim Lee & Choong Hwan Lee, 2022. "Psychophysiological Responses of Humans during Seed-Sowing Activity Using Soil Inoculated with Streptomyces rimosus," IJERPH, MDPI, vol. 19(23), pages 1-14, December.
    2. Kyoung-Hee Park & Sin-Ae Park, 2024. "Development and Effectiveness of an Agro-Healing Program Utilizing Rural Resources to Relieve Stress in Adults," Sustainability, MDPI, vol. 16(9), pages 1-11, April.
    3. Ya-Hui Chung & Shiu-Jen Chen & Ching-Luug Lee & Chun-Wei Wu & Yu-Sen Chang, 2022. "Relaxing Effects of Breathing Pseudotsuga menziesii and Lavandula angustifolia Essential Oils on Psychophysiological Status in Older Adults," IJERPH, MDPI, vol. 19(22), pages 1-13, November.

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