Mean ERP amplitude (80-180 ms; in microvolts) and peak latency (in milliseconds) to standard and deviant stimuli
| Mean amplitude | Latency | |||||||
|---|---|---|---|---|---|---|---|---|
| STD | DEV | STD | DEV | |||||
| Fz | RM | Fz | RM | Fz | RM | Fz | RM | |
| Passive | ||||||||
| n = 2 | − 0.68 (0.30) | 0.33 (0.17) | − 1.61 (0.25) | 1.16 (0.18) | 129 (4.46) | 122 (5.83) | 118 (3.54) | 135 (7) |
| n = 6 | − 0.18 (0.22) | 0.26 (0.17) | − 1.81 (0.25) | 0.99 (0.21) | 130 (5.63) | 117 (5.78) | 123 (3.96) | 118 (6.84) |
| n = 36 | 0.88 (0.23) | − 0.11 (0.13) | − 1.29 (0.26) | 1.28 (0.20) | 133 (5.36) | 116 (5.43) | 131 (3.41) | 111 (6.2) |
| Active | ||||||||
| n = 2 | − 3.96 (0.54) | 1.38 (0.40) | − 1.44 (0.34) | 0.89 (0.24) | 120 (4.05) | 134 (6.44) | 132 (4.29) | 140 (6.68) |
| n = 6 | − 0.36 (0.24) | 0.31 (0.17) | − 2.10 (0.31) | 0.61 (0.23) | 125 (4.85) | 115 (5.63) | 144 (5.26) | 152 (6.18) |
| n = 36 | 0.13 (0.27) | − 0.53 (0.20) | − 2.99 (0.38) | 0.14 (0.27) | 121 (5.66) | 110 (8.08) | 156 (4.14) | 159 (5.18) |
The SEM is shown in parentheses. The effect of standard repetition (n = 2, 6, and 36) is shown for the passive and active discrimination conditions, separately for frontal and mastoid electrodes. STD, Standard; DEV, deviant.