EEG Changes in Odor Effects after the Stress of Long Monotonous Work

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  • 長時間単純作業のストレス負荷に対する香り効果の脳波変化

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Abstract

Odor effects after the stress task(Uchida-Kraeppelin test)were evaluated by EEG changes in 8 normal adults. The subjiects were exposed to 4 odors(peppermint, bergamot, lavender, sandalwood)and the control(air). The amplitude of the slow α amplitude increased just after the stress task, which may indicate cortical deactivation. When exposed to the 4 odors or control(air), the latter had increased δ and θ amplitude, while the former had no increase. Peppermint significantly increased β_1 and β_2 amplitudes compared with the other odors. These results suggest that the odor stimuli may prevent reduction of arousal level after the stress task, peppermint epsecially raised the arousal level, which may indicate an excited effect.

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