Estimation of Visual Load through Analysis of Opening Duration of Spontaneous Blink

Abstract

This study proposes a new method for estimating visual load rapidly and objectively The physiological indices used are the closing and opening durations of each spontaneous blink, which durations are derived from the peak of the electro-oculography waveform. Three experiments respectively investigating the changes of the closing and opening durations due to the experimental visual load, due to the biological rhythm, and due to the width of the palpebral fissure showed that the opening duraion of a spontaneous blink is prolonged by the visual load This effect does not depend on the biological rhythm, interindividual variations, and the initial width of the palpebral fissure