Figure 7From: Time-frequency optimization for discrimination between imagination of right and left hand movements based on two bipolar electroencephalography channelsComparison of method performances in the cross-validation on dataset IIb. This figure shows comparisons of method performances in the cross-validation on dataset IIb. (A, B) Scatter plots of classification accuracies (Acc) obtained by using TFDF in time-frequency selection vs. those obtained by broad band (8 to 30 Hz) EEG in a fixed time segment (0.5 to 2.5 s) without and with CSP, respectively. (C, D) Scatter plots of Acc obtained by using F score in time-frequency selection vs. those obtained by broad band (8 to 30 Hz) EEG in a fixed time segment (0.5 to 2.5 s) without and with CSP, respectively. (E) Scatter plots of Acc obtained by using TFDF vs. those obtained by using F score in time-frequency selection. (F) Scatter plot of Acc obtained by broad band (8 to 30 Hz) EEG in the fixed time segment (0.5 to 2.5 s) with CSP filtering vs. those obtained by the same EEG but without CSP filtering. For the points above the diagonal in each scatter plot, the method in y-axis outperforms the method in x-axis in the cross-validation on the corresponding training session.Back to article page