The Relation between Observers' Psychophysiological Conditions and Human Errors during Monitoring Task

In this research, we investigated the relation between observers' psychophysiological conditions and human errors made in the task of monitoring electrocardiogram (ECG) wave pattern changes. The number of errors and fingertip volume pulse waves were recorded during the task. Chaos analysis was applied to the fingertip volume pulse waves to calculate the largest Lyapunov exponents. The number of diagnostic errors of judgment and operation errors was treated as human errors. We found significant negative correlation between the largest Lyapunov exponents and human errors. The results showed that when the largest Lyapunov exponents were low, the observers made mistakes.