Attention mechanisms underlying dual-color digital visual search based on Schulte grid: An event-related potential study.

Background: Attention selection is considered to be determined by the perceptual load of cognitive tasks and attention resources that are assigned to processing-independent stimuli.

Methods: Using visual search paradigm and Schulte grid, the behavioral responses and event-related potential (ERP) of 27 pupils aged 8-11 (12 girls and 15 boys) were recorded. The subjects were asked to search for the numbers 1, 2, and 3 sequentially and locate the number 5 in the case of monochromatic (black) and bicolor (black-red) numbers.