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Feedback-locked data for positive and negative feedback in rounds 1, 2, and 3 at electrodes Fz, Cz, and Pz. Only for the purpose of depicting the data, an additional baseline correction was performed over the pre-feedback window starting from −200 ms. Shaded areas indicate the average time windows of the FRN trough-to-peak measure (Fz), running from the trough latency to the peak latency, and the time window of the mean amplitude for the P300 measure (Cz, Pz).
