Proper

Abstract

The proportion of smartphone users worldwide is 66%. Accordingly, the e-book business market utilizing smart phones is also growing steadily. In addition, research on the dgree of visual fatigue and the measurement of visual fatigue are also active. On the other hand, research related to visual fatigue mitigation from smartphone is relatively inadequate. The purpose of this study was to investigate the effect of aroma odor on visual fatigue through the measurement of biometric data. The subjects were male and female, in their 20’s, without olfactory disorder. Pulse wave meters were used to measure changes in LF/HF ratio. In order to add visual fatigue, we adopted a method of reading electronic books through a smartphone. Experimental results showed that LF/HF ratio was statistically significant only at some times in Group A. These results suggest that the increase of visual fatigue suppresses the olfactory relaxation and arousal effect in the competition process where sight and olfactory are transmitted to the cerebrum. Therefore, it is necessary to elucidate more clear reason through the follow-up study.