Objective and Subjective Evaluation of Online Error Correction during P300-Based Spelling
Figure 7
Grand average event-related dynamics (−250 ms to 1000 ms, channel Cz) associated with responses to correct feedbacks (black solid line), responses to incorrect feedbacks (grey solid line), and the difference between the two (black dashed line) (a). Zero time corresponds to feedback onset. Topographies for correct (top), incorrect trials (middle), and their difference (bottom) correspond to the latencies of the peaks of the neg-ErrP (b) and pos-ErrP (c), respectively.
