著者

互 恵子 両角 亮子 吉田 倫幸

出版者

日本化粧品技術者会

雑誌

日本化粧品技術者会誌 (ISSN:03875253)

巻号頁・発行日

vol.25, no.1, pp.9-14, 1991-07-10 (Released:2010-08-06)

参考文献数

9

被引用文献数

1

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The present study examined the effect of self-administered facial massage (“Shiseido Home Massage”) on psychophysiological states. Twenty healthy females, age 19 to 48, served as subjects. Prior to the experiment, subjects learned the technique of self-administered facial massage by watching a video on skin care and by receiving direct instruction from a beauty specialist. To master the technique, subjects were asked to practice self-administered facial massage everyday for a two-week period. During the experiment, frontal EEG (Fz) was recorded during pre-rest, self-administered facial massage and post-rest conditions. Before and after recording in each condition, subjects estimated their own psychological states (mental arousal level and “feeling-refreshed” level). The frequency-fluctuation of α-waves in the EEG record was extracted using an F-V conversion system and analyzed using Fast Fourier Transform (FFT). Self-administered facial massage was found to increase the subjects' sence of well-being and the estimated level of feeling refreshed. In addition, self-administered facial massage was found to reduce mental arousal during post-rest in subjects who reported a high arousal level in the pre-rest condition, whereas it increased the arousal level during post-rest in subjects who initially reported low arousal. Also, the power spectrum of α-wave fluctuations during self-administered facial massage is of the 1/f type which can be described by a curve approximately inversely proportional to the frequency over the low frequency range. This powerspectrum relation did not hold for states of higher or lower arousal. The results suggest that the 1/f type of α-wave fluctuations in the frontal area are correlated with a feeling of wellbeing and mental arousal and that self-administered facial massage results in an improved self-assessment of psychophysiological states.