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KMID : 1023120130110061099
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Korean Journal of Aesthetic Society
2013 Volume.11 No. 6 p.1099 ~ p.1107
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Influence of the Concentration of Lavender Oil on Brain Activity
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Kang Seung-Yeon
Kim Min-Kyung
Ryu Hee-Wook
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Abstract
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To evaluate the effect of the concentration of the lavender oil on brain activity, the changes of electrocephalograms (EEG) in subjects were investigated. EEG evaluation was assessed in 30 healthy female subjects who is in 20s and had normal sense of smell. The subjects with eyes closed were exposed under four concentration of lavender oil (0.1, 1, 10, and 100%) during 20 sec, and EEG was recorded from 19 scalp positions of the international 10-20 system. EEG was evaluated based on the coefficient variation of brain (CVB) and the deviation compared to the background EEG induced under unstimulating condition. The lavender activated more alpha and theta waves on the ventral region (Fp1-F7-T3-T5-O1-O2-T6-T4-F8-Fp2) than the dorsal region, especially on the bitemporal (T3, T4), but it deactivated beta and gamma waves. The lavender oil is either more activated or less deactivated major EEG indices such as relative brain powers, ASEF50, SEF50, and SEF90 on scalp regions showed lower activities compared to on other positions in background EEG. The brain indices were significantly influenced with the concentration of lavender oil. With increasing the concentration, gamma and beta waves were decreased, alpha waves were increased. The alpha wave and sensorimotor rhythm (SMR) were most activated by the Lavender Oil. In more than 1% oil concentration these phenomena appeared prominently, and especially both SEE50 indicating the state of arousal and SEF90 indicating were decreased.
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KEYWORD
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EEG, Lavender, exposure concentration, Coefficient variation of brain, Brain activity
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