Digital Interface Visual Information Cognitive Performance Brain Physiology Experiment Analysis And Evaluation Method

With the continuous development of social information,the number and variety of visual information in the digital interface is more and more.Through the study of the user's cognitive behavior,the digital interface is designed and improved,which can improve the user's speed and accuracy of the visual information of the interface.Among them,the advantages and disadvantages of the interface visual information directly affect the user's information cognitive performance.The purpose of this paper is to reveal the process of cognitive processing of visual information,Through the analysis of the experimental data,we can obtain the visual factors which influence the cognitive performance objectively,and provide the theoretical basis for the interface design.First of all,from the three aspects of visual information organization system,information structure and information visualization,research the related content of the digital visual interface information,the interface information are classified into information elements,information structure,information organization,information visualization.Based on the theoretical knowledge of neurocognitive and cognitive psychology,this paper divides the research of digital interface visual cognition into the physiological mechanism of visual information and the cognitive mechanism of visual information.Based on the theory of knowledge,the neural processing mechanism of visual information is studied in detail.By using the theoretical knowledge of cognitive psychology,this paper studies the psychological process of the user's cognition of information.Secondly,this paper summarizes the cognitive performance evaluation method of interface visual information.Based on the cognitive processing of information,this paper puts forward the framework of cognitive performance framework for visual information.And,for each dimension,we put forward the index of cognitive performance.Finally,based on EEG of ERP technology,icons and background to the direction of structure as the research object,using EEG experiment data and EEG data,the effects of different orientation and background structure of the icon on the P200,P300,N400 of brain electrical components.