Table 2A.
Clustering results of MMN over 24 frontocentral channels
| Electrode sites | HC & Baseline FEP | HC & Follow-Up FEP | Baseline & Follow-Up FEP | |||
|---|---|---|---|---|---|---|
| Cluster 1: Better functioning (N = 16) | Cluster 2: Poorer functioning (N = 37) | Cluster 1: Better functioning (N = 40) | Cluster 2: Poorer functioning (N = 11) | Cluster 1: Better functioning (N = 27) | Cluster 2: Poorer functioning (N = 11) | |
| AFz | -3.71 (1.1) | -1.48 (1.1) | -2.57 (1.3) | 0.22 (1.3) | -2.26 (1.5) | 0.09 (1.5) |
| AF3 | -3.36 (1.3) | -1.36 (1.3) | -2.57 (1.2) | 0.47 (1.2) | -2.19 (1.2) | 0.34 (1.2) |
| AF4 | -3.69 (1.2) | -1.51 (1.2) | -2.66 (1.3) | 0.26 (1.3) | -2.4 (1.2) | 0.07 (1.2) |
| Fz | -3.51 (0.8) | -1.44 (0.8) | -2.42 (1.0) | -0.27 (1.0) | -2.35 (0.9) | -0.32 (0.9) |
| F1 | -3.51 (0.8) | -1.5 (0.8) | -2.5 (1.0) | -0.25 (1.0) | -2.38 (0.8) | -0.18 (0.8) |
| F2 | -3.49 (0.9) | -1.56 (0.9) | -2.51 (1.0) | -0.14 (1.0) | -2.48 (0.8) | -0.13 (0.8) |
| F3 | -3.43 (0.9) | -1.58 (0.9) | -2.58 (1.0) | -0.2 (1.0) | -2.41 (1.0) | -0.05 (1.0) |
| F4 | -3.53 (0.9) | -1.39 (0.9) | -2.56 (1.1) | -0.17 (1.1) | -2.36 (0.8) | -0.19 (0.8) |
| F5 | -2.95 (1.2) | -1.35 (1.2) | -2.24 (1.0) | 0.06 (1.0) | -2.14 (1.2) | 0.14 (1.2) |
| F6 | -3.07 (0.9) | -1.4 (0.9) | -2.39 (1.0) | 0.03 (1.0) | -2.3 (1.0) | -0.13 (1.0) |
| FCz | -3.28 (0.8) | -1.45 (0.8) | -2.31 (0.9) | -0.17 (0.9) | -2.42 (0.6) | -0.32 (0.6) |
| FC1 | -3.44 (0.9) | -1.47 (0.9) | -2.43 (1.0) | -0.19 (1.0) | -2.45 (0.7) | -0.39 (0.7) |
| FC2 | -3.41 (0.8) | -1.42 (0.8) | -2.37 (1.0) | -0.12 (1.0) | -2.4 (0.5) | -0.28 (0.5) |
| FC3 | -3.04 (0.7) | -1.39 (0.7) | -2.17 (0.9) | -0.41 (0.9) | -2.27 (0.7) | -0.31 (0.7) |
| FC4 | -3.27 (0.8) | -1.37 (0.8) | -2.35 (1.0) | 0.07 (1.0) | -2.36 (0.5) | -0.36 (0.5) |
| FC5 | -2.68 (0.9) | -1.28 (0.9) | -1.94 (0.9) | -0.31 (0.9) | -2.03 (0.9) | -0.16 (0.9) |
| FC6 | -3.0 (0.9) | -1.25 (0.9) | -2.16 (1.0) | -0.19 (1.0) | -2.1 (0.4) | -0.22 (0.4) |
| Cz | -2.84 (0.8) | -1.17 (0.8) | -1.95 (1.0) | -0.07 (1.0) | -2.1 (0.5) | -0.35 (0.5) |
| C1 | -2.91 (0.8) | -1.13 (0.8) | -1.97 (1.0) | -0.29 (1.0) | -2.03 (0.5) | -0.38 (0.5) |
| C2 | -2.8 (0.7) | -1.22 (0.7) | -1.98 (1.0) | -0.1 (1.0) | -2.17 (0.6) | -0.38 (0.6) |
| C3 | -2.73 (0.9) | -1.21 (0.9) | -1.95 (1.0) | -0.37 (1.0) | -2.02 (0.7) | -0.41 (0.7) |
| C4 | -2.81 (0.6) | -1.09 (0.6) | -1.96 (1.0) | 0.02 (1.0) | -2.07 (0.6) | -0.21 (0.6) |
| C5 | -2.28 (0.8) | -1.09 (0.8) | -1.67 (0.9) | -0.36 (0.9) | -1.7 (0.7) | -0.28 (0.7) |
| C6 | -2.34 (0.7) | -1.0 (0.7) | -1.64 (1.0) | 0.09 (1.0) | -1.8 (0.6) | -0.2 (0.6) |
Note 1: means with standard deviations in parentheses unless otherwise specified. Note 2: More negative values indicate larger/healthier MMN amplitudes. Note 3: significant difference between the two cluster means (t-test, p-value < 0.05) on each channel was shown in bold.