EEG-Based BCI System Using Adaptive Features Extraction and Classification Procedures

Figure 5

This picture shows the trends over the 6 sessions for peak accuracy (red), average accuracy (blue), and chance level (black) for each participant. As described in Section 2.4, all the accuracies were computed considering the repetitions following the last of the session. Since each average accuracy should be compared to the corresponding , the blue line of the average and the black line of chance level are aligned. A black horizontal dashed lined indicating the criterion level of 70% is also added.