Stress-relieving effects of visual stimulation based on ECG analysis

抄録

A number of occupations require individuals to utilize visual display terminals extensively throughout the workday. Heart rate (HR) and heart rate variability (HRV) were employed to indicate the level of mental stress while participants were subjected to quantitative overload. We hypothesized that the recuperative effects of aromas may be optimal during periods when conditions such as fatigue, human error, and drowsiness have accumulated and work performance was di-minished. Six subjects were included in the study. Electrocardiograms (PolyMa-teMini, Miyuki Giken, sampling at 500 Hz) with five CM inductions were recorded at three disposable electrodes on the chest. Experiments 1 and 2 each measured the ECG for 14 minutes. All subjects participated in both Experiments 1 and 2. For the acquired ECG data, the ECG R wave was detected, the R-R interval was identified, and the stress index (LF/HF) was calculated after coefficient of variation (CV) and frequency analysis of the R-R interval. As a result, the stress index (LF/HF) did not show any significant difference between stressful and non-stressful stimuli. The effect of the video on the activation of the autonomic nervous system was expected. In other words, there was a possibility that people can switch off their feelings by watching videos in their daily activities.