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(A) An example of a trial in a cue-stimulus sequence. (B) Shows the averaged ERPs at electrode Fz elicited by cues, and (C) shows the ERPs at electrode Fz elicited by digits. The shaded areas indicate windows of analysis. The bottom panel presents topographical maps for the distribution of the difference between switch and non-switch conditions for L1 and L2 based on cue-locked ERPs (D) and stimulus-locked ERPs (E), respectively.
