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(A) and (B) The accuracy and reaction times for the four types of change, respectively. The * and ns show the result of planned contrast between the three types of change and no change. * means the difference is significant, whereas ns means the difference is nonsignificant. (C) The ERPs recorded at FZ and FCZ. Only the relevant change and both change elicited N270 relative to no change, no difference existed between irrelevant change and no change.
