The experimental research of task load quantitative analysis based on the pupil diameter

The aim of this paper is to do experimental research of task load quantitative analysis based on the pupil diameter. Two sets of experiments were designed from several task elements: (1) Visual Tracking, Visual - Cognitive, Visual - Cognitive --- Response; (2) Auditory-Cognitive, Auditory - Cognitive - Respond. In the experiment, the pupil diameter was obtained by eye tracker. From the experimental results, the change of pupil size in visual tracking exper-iment is the same as in visual cognition experiment, which can indicate the load of these two tasks being the same. The increasing size of the pupil diameter aroused by task of responding, in the experiments of Visual-Cognitive-Respond and Auditory-Cognitive-Respond, is also in the same. The results showed that pupil diameter can be used as the index for task load quantitative analysis.