Table 3.
Mean MMN, P3a and LDN (μV) amplitudes for all four measurements.
| Amplitude (SD) μV | |||||
|---|---|---|---|---|---|
| Measurement | 1st | 2nd | 3rd | 4th | |
| MMN | |||||
| VOW | -1.97 (2.6) | -2.58 (2.6) | -3.38 (3.0) | -2.89 (2.8) | |
| DUR | -3.65 (2.4) | -4.14 (2.9) | -4.83 (3.1) | -4.58 (2.4) | |
| CON | -2.32 (2.2) | -2.75 (2.5) | -2.78 (2.5) | -2.63 (2.1) | |
| INT | -2.62 (2.4) | -2.89 (2.2) | -2.26 (2.5) | -2.42 (2.0) | |
| FRE | -1.98 (2.5) | -2.56 (2.6) | -3.05 (2.9) | -2.63 (2.8) | |
| P3a | |||||
| VOW | -4.37 (2.6) | -3.99 (2.8) | -3.44 (2.9) | -1.42 (2.9) | |
| DUR | -0.15 (3.0) | -0.32 (2.3) | -0.09 (2.5) | -0.22 (1.9) | |
| CON | -3.08 (2.3) | -3.27 (2.6) | -3.76 (2.4) | -3.19 (2.3) | |
| INT | -3.02 (2.5) | -3.56 (2.4) | -3.34 (2.3) | -2.27 (2.0) | |
| FRE | -2.51 (2.2) | -2.52 (2.4) | -2.04 (2.6) | -0.65 (2.7) | |
| LDN | |||||
| VOW | -5.63 (2.7) | -5.83 (3.2) | -6.08 (2.8) | -5.25 (2.5) | |
| DUR | -1.67 (2.4) | -1.76 (2.2) | -2.01 (2.1) | -1.70 (1.9) | |
| CON | -3.45 (2.2) | -3.64 (2.4) | -4.00 (2.4) | -3.04 (2.2) | |
| INT | -3.71 (2.1) | -3.93 (2.4) | -3.73 (2.2) | -2.94 (2.2) | |
| FRE | -3.86 (2.3) | -3.55 (2.3) | -4.35 (2.1) | -3.38 (2.3) | |
Mean amplitudes for the MMN and the P3a are averaged over F3, Fz, and F4 electrodes and for the LDN over F3, Fz, F4, C3, Cz, C4, P3, Pz, and P4 electrodes.