Research on Interface Complexity and Operator Fatigue in Visual Search Task

During the visual search task performed by the operator, if the magnitude of the information flow does not match the design of the boundary, it will directly affect the information decoding process of the operator’s brain. The resulting visual load will easily cause the operator to fatigue, Which seriously affects the performance of visual search tasks. Most of the literature focuses on the relationship between the physiological data of the eyes and operator fatigue, and the research on the relationship between the source of fatigue and the design of interface elements is insufficient. This research focuses on the eye movement data during the visual search task, and studies the relationship between the objective complexity of the human-machine interface and operator fatigue, and provides design suggestions and empirical evidence for interface designers when designing interfaces. The study found that in visual search tasks, the number of interface elements exceeding 20 and the interface element size being too small can significantly induce operator fatigue.