Experimental system for measuring brain load in multi-task visual cognition and method

Abstract

The invention provides an experimental system for measuring brain load in multi-task visual cognition and a method. The system consists of an adjustable seat, a virtual vision interface display device and electroencephalogram signal acquiring and processing equipment, the adjustable seat and the virtual vision interface display device are used for simulating visual cognition tasks under various work conditions, the electroencephalogram signal acquiring and processing equipment is used for synchronously acquiring human electroencephalogram signals in a simulated visual cognition process, and acquisition and extraction of the electroencephalogram signals in a visual cognition scheme under the multiple tasks can be realized by the experimental system. The electroencephalogram signals of visual cognition under the different tasks are compared by means of analysis of electroencephalogram complexity, and the corresponding relationship between brain waves and brain activities is obtained, and accordingly brain load conditions in a visual cognition process can be judged.

Description

【Technical field】 [0001] The invention belongs to the technical field of ergonomics and relates to an experimental system and an experimental method for evaluating brain load by using the experimental system to carry out multi-task visual information testing. 【Background technique】 [0002] Accurate cognition of multi-task visual information is an important means to monitor the operating status of equipment and obtain external environmental information in the human-computer interface interaction system. The most direct manifestation of multi-task visual information is graphics or text, and it can monitor different tasks and The combination of state graphics or text is the instrument, so the cognition of the instrument is very typical in the acquisition of multi-task visual information. With the improvement of automation level, the mechanical instruments of many large-scale equipment have been replaced by graphical and interactive virtual instruments, and the amount of visual...

AI Technical Summary

Problems solved by technology

These methods take time requirements, physical demands and effort as basic elements, and mainly use reaction time, reaction speed and accuracy as evaluation indicators. The disadvantage is that subjective evaluation methods are limited by short-term memory loss, and the nature of tasks is different. Likewise, it is impossible to come up with a broadly applicable performance parameter, so mental workload profiles cannot be compared across operations

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