Event-Related Potential Study on Visual Selective Attention to Icon Navigation Bar of Digital Interface

In order to investigate the user cognitive processing of visual selective attention to icon navigation bar in the digital interface, 20 subjects were required to notice and remember the activated icons in the navigation bar selectively and judge whether or not target icon had presented in the navigation bar and if so press the button quickly. Their behavior and event-related potential (ERP) data were collected. Experimental results demonstrate that P200 and N400 components of navigation bar selective attention exist obvious differences in amplitude and latency under different activated icon quantities. In the recognition process of target stimulus icon, accuracy rate and reaction time both exist regular changes with the activated icon quantities, and target stimulus recognition N200 component distributing in different brain areas exists obvious differences.

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