Table 1.
ISI-conditions |
rmANOVA results |
||||||
---|---|---|---|---|---|---|---|
Cortical components | Baseline | 150 ms—Baseline | 525 ms—Baseline | 1,650 ms—Baseline | F | p | |
Amplitude | |||||||
Peak-to-peak | N1-P2/µV | 1.80 ± 0.36 | −0.45 ± 0.25 | −0.69 ± 0.21 | −0.86 ± 0.20 | 2.43 | .11 |
P2-N2/µV | 2.35 ± 0.29 | −1.41 ± 0.10 | −1.14 ± 0.18 | −1.10 ± 0.14 | 1.97 | .16 | |
Mean amplitude | N1-P2/µV | 0.33 ± 0.22 | 0.26 ± 0.21 | 0.03 ± 0.20 | 0.11 ± 0.20 | 4.9 | .023 |
P2-N2/µV | 0.62 ± 0.14 | −0.62 ± 0.061 | −0.44 ± 0.074 | −0.39 ± 0.095 | 4.68 | .02 | |
Latency | N1/ms | 106.8 ± 2.6 | 132.8 ± 8.9 | 136.7 ± 8.4 | 125 ± 7.9 | 1.24 | .30 |
P2/ms | 199.2 ± 6.4 | 252.6 ± 11.3 | 234.4 ± 9 | 229.2 ± 11.9 | 1.41 | .26 |
Note. The N1-P2 and N2-P2 deflections were extracted by using two different approaches: peak-to-peak and mean amplitude. The amplitude differences were normalized by subtracting the baseline condition. Latencies were extracted at the position of the peaks of the N1 and P2 components. One-way ANOVA was performed across ISI conditions and 12 subjects. In the bottom part of the table, absolute latencies of the respective EEG responses are given without a baseline correction. rmANOVA = repeated measures analysis of variance; ISI = interstimulus interval.