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

Table 1

Overview of the module characteristics.

(i) One repetition	(i) Several U repetitions	(i) Several repetitions
(ii) MI instruction via arrow presentation	(ii) MI instruction via arrow presentation	(ii) MI instruction via target position
(iii) No feedback	(iii) Feedback (above threshold)	(iii) Feedback (above threshold)
	(iv) Adaptively updated thresholds	(iv) Thresholds no longer updated
(iv) First estimation of W and SVM classifier	(v) Use of W and SVM and its updating	(v) Use of W and SVM
(v) Balanced arrows	(vi) Imbalanced arrows
	(vii) Accuracy evaluation	(vi) Accuracy evaluation