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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/1817
Title: Effects of inhaled rosemary oil on subjective feelings and activities of the nervous system
Authors: Winai Sayorwan
Nijsiri Ruangrungsi
Teerut Piyapunyporn
Tapanee Hongratanaworakit
Naiphinich Kotchabhakdi
Vorasith Siripornpanich
Mahidol University. Institute of Molecular Biosciences. Research Center for Neuroscience
Mahidol University. Faculty of Science. Center for Neuroscience
Keywords: Rosmarinus officinalis L;Electroencephalography;Alpha power;Autonomic nervous system;Mood state;Open Access article
Issue Date: 2013
Citation: Scientia Pharmaceutica. Vol.81, No.2 (2013), 531-542
Abstract: Rosemary oil is one of the more famous essential oils widely used in aroma-therapy. However, the effects of rosemary oil on the human body, in particular the nervous system, have not been sufficiently studied. This study investigates the effects of the inhalation of rosemary oil on test subjects’ feelings, as well as its effects on various physiological parameters of the nervous system. Twenty healthy volunteers participated in the experiment. All subjects underwent autonomic nervous system (ANS) recording. This consisted of measurements of skin temperature; heart rate; respiratory rate; blood pressure; evaluations of the subjects’ mood states; and electroencephalography (EEG) recordings in the pre-, during treatment, and post-rosemary inhalation periods as compared with control conditions. Our results showed significant increases in blood pressure, heart rate, and respiratory rate after rosemary oil inhalation. After the inhalation treatments, subjects were found to have become more active and stated that they felt “fresher”. The analysis of EEGs showed a reduction in the power of alpha1 (8–10.99 Hz) and alpha2 (11–12.99 Hz) waves. Moreover, an increment in the beta wave (13–30 Hz) power was observed in the anterior region of the brain. These results confirm the stimulatory effects of rosemary oil and provide supporting evidence that brain wave activity, autonomic nervous system activity, as well as mood states are all affected by the inhalation of the rosemary oil.
URI: http://repository.li.mahidol.ac.th/dspace/handle/123456789/1817
metadata.dc.identifier.url: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3700080/pdf/scipharm-2013-81-531.pdf
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