Proposal for Visual Attention Level Based on Microsaccades after Saccades

Several studies on microsaccades have been performed; however, those studies measured microsaccades under the fixation state. For practical applications, such as cognitive science, psychology, brain science, and user interface, it is ideal to measure microsaccades from the eye-tracking data that includes saccades. In this study, we propose the visual attention level based on the eye-tracking data including microsaccades after saccades. Based on the research on the visual attention level of humans, the microsaccades and pupil diameter were simultaneously measured in three experimental tasks that required different visual attention levels. Through statistical analysis, the results of the experiment indicated that the behaviors of the microsaccades and the pupil were different between the three experimental tasks, and suggested that the visual attention level can be classified by microsaccades after saccades.