Figure 3.

P3 amplitudes were calculated in three ways. A) Mean P3 amplitude extracted from a single time window across all trials, consistent with traditional methods. B) Individual P3 amplitude was extracted as the average amplitude across trials within a time window defined by the individual’s average P3 latency. C) Trial-centered P3 amplitudes were extracted for each trial, from a time window defined by the peak P3 amplitude on that trial.