Fig. 5.

Group-level average waveforms and scalp topographies of N1, P2, and P3 at four conditions (S, Sv, Sa, and Sva) within somatosensory target group. Group-level average waveforms at S, Sv, Sa, and Sva conditions are presented using red, green, blue, and black lines. The gray region in each panel shows the time interval to measure ERP peaks. Left panel: Group-level average waveforms (measured at C4) and scalp topographies of N1 at four conditions. Middle panel: Group-level average waveforms (measured at Cz) and scalp topographies of P2 at four conditions. Right panel: Group-level average waveforms (measured at Pz) and scalp topographies of P3 at four conditions