| Abstract |
| This study aims to explore the effect of combined stimulation consisting of relaxation-inducing scent and high-concentration oxygen on psychological/physiological responses. The cerebral blood flow responses and arousal that occur when oxygen concentration is controlled under the same scent conditions were observed. The experiment’s scent was lavender oil (relaxing scent), and the oxygen concentrations were normal (21%) and high (30%). The experiment involved 12 male adults repeating a 5-minute rest period and a 5-minute stimulation period. The hemoglobin (HbO) concentration was extracted using the Beer-Lambert law to observe cerebral blood flow responses. Arousal was assessed using a 5-point scale questionnaire. A paired t-test was used to compare the two stimuli (lavender +21%, lavender +30%). Results reveal that HbO concentration in the frontal lobe increased, whereas arousal decreased at lavender +30% vs. lavender +21%. These results suggest that adding high-concentration oxygen to scent stimulation can induce more brain activation and relaxation. |
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| Key Words |
| High-Oxygen Concentration, Lavender Oil, fNIRS, Arousal-Relaxation, Hemodynamic Responses, 고농도 산소, 라벤더 오일, 기능성 근적외선 분광법, 각성-이완, 혈류역학 반응 |
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