“…[1] The event can be a stimulus presentation followed by sensory-related operations, cognitive control operations, affective operations, or memory-related operations. There are many ERP components used in language studies, such as P3b, N400, and P600 [2,3,4,5,6,7] . P3b 350~550ms Comerchero & Polich refers to the ERPs components induced by impossibility events [8] , e.g., P3b component shows signi cant differences between accurate feedback and false feedback, and between learning tasks of arithmetic rule with highly cognitive demanding and perceptual motion tasks with relatively simple skills [2] .…”