Table 3.
Mean classification accuracies using conventional and regularized CSP algorithms for all the considered frequency bands. CCSP—composite CSP; TR_CSP—CSP with Tikhonov regularization; WTR_CSP—CSP with weighted Tikhonov regularization; DL_CSP—CSP with diagonal loading using cross validation.
| Algorithm/Frequency Band | CSP | CCSP1 | CCSP2 | TR_CSP | WTR_CSP | DL_CSP | DL_CSP_auto |
|---|---|---|---|---|---|---|---|
| (1–3 Hz) | 54.86 | 65.00 | 63.93 | 52.54 | 53.51 | 49.49 | 51.62 |
| (4–7 Hz) | 60.10 | 65.85 | 66.30 | 61.30 | 62.05 | 60.91 | 60.52 |
| (8–13 Hz) | 61.17 | 64.22 | 63.77 | 60.32 | 59.27 | 59.46 | 59.79 |
| (14–30 Hz) | 68.93 | 71.38 | 71.21 | 69.24 | 69.05 | 66.76 | 68.08 |
| (31–50 Hz) | 69.61 | 72.49 | 72.19 | 69.48 | 70.19 | 69.91 | 68.77 |
| (50–100 Hz) | 72.74 | 76.97 | 75.95 | 72.06 | 72.86 | 72.20 | 66.28 |