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. 2013 May 17;8(5):e64530. doi: 10.1371/journal.pone.0064530

Figure 2. The ERP grand-average waveforms.

Figure 2

Grand-average waveforms at channel Fz & Pz for experimental conditions (independent, baseline vs. conformity) in the response period (A&B) and six experimental conditions (IL: choose to be different from others and actually loss; IW: choose to be different from others and actually win; BL: choose to conform to one of the confederate and actually loss; BW: choose to conform to one of the confederate and actually win; CL: choose to conform to others and actually loss; CW: choose to conform to others and actually win) in the outcome period (C&D). During the outcome period, we also found a significant linear interaction effect, reflecting that the sensitivity to monetary reward was modulated by conformity degree. So we further drawn the difference waveforms for three conditions (independent loss-win, baseline loss-win, and conformity loss-win) (E&F). The shaded 200–400 ms time window was for the average calculation of the FRN effects. The P300 was measured as the most positive value in the 300–500 ms time window.