Computational Intelligence and Neuroscience / 2017 / Article / Tab 3 / Research Article
Mental Task Evaluation for Hybrid NIRS-EEG Brain-Computer Interfaces Table 3 Top five features for the five best task pairs of each modality combination, using the average absolute values of the SVM weights as ranking metric. The models trained on the best performing one-second window were used (three to four seconds after stimulus onset for EEG-only and 11 to 12 seconds for NIRS-only and fusion of signals).
(a) EEG only ROT-MI ROT-FACE ROT-SING SUB-MI SING-SUB pwr_high_alpha_O2 pwr_high_alpha_O2 pwr_t4_30_P8 pwr_high_alpha_PO7 pwr_alpha/beta_PO8 pwr_low_alpha_CP6 pwr_t4_30_P10 pwr_t4_30_O2 pwr_alpha/beta_Iz pwr_total_PO7 pwr_high_alpha_CP6 pwr_alpha/beta_O1 pwr_high_alpha_PO8 pwr_total_PO8 pwr_high_alpha_Iz pwr_high_alpha_O1 pwr_high_alpha_PO7 pwr_t4_30_P10 pwr_theta/beta_O2 pwr_total_PO8 pwr_t4_30_P8 pwr_low_beta_P7 pwr_alpha/beta_PO8 pwr_theta/beta_P9 pwr_total_P7
(b) NIRS only ROT-MI ROT-SING ROT-FACE SUB-MI ROT-WORD mean_S15-D1_HbO mean_S15-D1_HbO mean_S15-D1_HbO mean_S14-D22_HbR mean_S15-D5_HbO mean_S10-D17_HbR mean_S1-D2_HbT mean_S10-D14_HbO mean_S15-D1_HbR mean_S13-D24_HbR mean_S1-D2_HbT mean_S6-D9_HbR mean_S3-D6_HbR mean_S15-D5_HbT mean_S16-D17_HbR mean_S13-D24_HbR mean_S13-D22_HbR mean_S10-D17_HbO mean_S15-D1_HbO mean_S13-D22_HbO mean_S14-D24_HbR mean_S14-D24_HbR mean_S10-D17_HbR mean_S1-D1_HbO mean_S13-D24_HbO
(c) EEG-NIRS fusion ROT-FACE ROT-MI ROT-SING SUB-MI SING-SUB mean_S15-D1_HbO pwr_theta/beta_O2 mean_S15-D1_HbO mean_S14-D22_HbR pwr_high_alpha_O2 pwr_t4_30_O2 pwr_high_alpha_O1 pwr_high_alpha_O2 pwr_high_alpha_PO7 pwr_t4_30_P9 pwr_theta/beta_O2 pwr_t4_30_O2 pwr_t4_30_P9 pwr_t4_30_O2 pwr_high_alpha_P10 pwr_theta/beta_PO7 pwr_t4_30_PO8 pwr_t4_30_O2 pwr_high_alpha_O2 mean_S15-D1_HbO pwr_high_alpha_PO8 mean_S14-D24_HbR pwr_theta/beta_O1 pwr_high_alpha_PO8 pwr_low_alpha_P9
