The Relationship between Psychological Workload and Oculomotor Indices under Visual Search Task Execution

In this paper, we have focused especially on microsaccade an pupil diameter to extract relationships with psychological workload. We measured how these oculomotor f eature values changes to 10 subjects when executing visual search tasks containing psychological wo rkload. To evaluate the amount of psychological workload, we used a systematic evaluation index, NASA-TLX a nd nalyzed by combining pupil movements with answer rate and difficulty of both tasks. As a result, we h ave discovered that by the difference of psychological workload and 2 experimental conditions, microsacc ade frequency and task performance changes.