Assessment of cognitive load in the user interface using oculography methods

The article considers the possibility of an objective assessment of cognitive load based on oculographic parameters. The experiment was conducted with the participation of three groups: a control group, with pre-exercise and cognitive load, modeled by simultaneous performance of a visual task and listening to an informational audio fragment. The pupil diameter demonstrated the greatest diagnostic value, while it was weakly sensitive to physical activity. The total duration of the fixations also turned out to be quite an informative parameter, but with less sensitivity. The data obtained confirm the potential of using these parameters to monitor cognitive state in real time. The results can be useful in the development of adaptive interfaces and human-machine systems that can take into account the level of mental stress of the user.