An analysis of pulse wave signals during visual display terminal operations

Abstract

Abstract. In this paper, participants operated visual display terminals (VDT); the authors analyzed their pulse wave signals to develop objective indices for diagnosing and assessing VDT-induced. The experiment used 30 healthy undergraduates test subjects; each subject operated static PC for 4 hours. The pulse waves of local blood volumes in the test subjects' finger-tips were measured every 30 minutes for 2 minutes. After the experiment, the pulse wave parameters were analyzed. All test subjects exhibited signs of visual fatigue according to the fatigue scale results. There were significant differences of heart rate (HR), which clearly declined before and after the experiment (P<0.01). The indexes RMSSD, SDNN, P3, P4, P5, P6, and TP had significant differences (P<0.01) and all rose. The positions of the main and dicrotic waves advanced (P<0.01). The experiment parameters prompted significant changes; pulse wave forms changed during VDT work. Based on these results, pulse wave analysis holds promise as an effective, noninvasive technique for measuring VDT fatigue.

Peripheral pulse harmonic analysis and its clinical application: A systematic review

“…For instance, in healthy young individuals, engaging in 4 h of computer gaming leads to an increase in the amplitude intensity of the third, fourth, fifth, and sixth harmonics. 107 In this particular case, attributing the changes in harmonic characteristics exclusively to either fatigue or cognitive stimulation presents a considerable challenge.…”