Figure 4. Mental imagery: Mean balanced accuracies obtained in the different procedures for all subjects.

Procedure 1: specific GLM feature selection and SVM classification. Procedure 2: specific GLM feature selection and GP classification. Procedure 3: global GLM and RFA feature selections and GP classification. Procedure 4: specific GLM and RFA feature selections with GP classification. E Procedure 5: specific GLM and RFA feature selections with SVM classification. Significant classification accuracies are marked by stars *.