Figure 6

Feedback-locked original waveforms (top) and corresponding scalp topographies for the difference signal (negative-positive; bottom) for stimulus pair AB at electrode Pz for positive and negative feedback in the observation and control condition for healthy control subjects (top) and SAD patients (bottom). Data for the first half of the run are displayed on the left, for the second part of the run on the right. Bar charts represent mean P3 magnitudes in the time window 300 to 450 ms after feedback onset at electrode Pz.