varied markedly between EEG references, showing larger and earlier peaks for ERPs referenced to linked mastoids or nose (peak latencies 340 ms and 350 ms) compared to the common average (370 ms; Fig. 11A), notwithstanding the fact that their window-based P3b topographies having a broad mid-parietal maximum were identical (i.e., their between-topography correlations are all r = 1.0; Fig. 11D, left columns). The corresponding CSD waveforms also had a positive maximum at Pz (375 ms), but revealed a more refined parietal P3b distribution with sources extending anteriorly along temporal regions but sparing central sites (Fig. 11D, right column).
