Table 1.
EP amplitudes.
| Left hand dominant | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Non-dominant hand movement | Dominant hand movement | ||||||||
| FCZ | CP3 | FCZ | CP4 | ||||||
| N30 | N20 | P27 | P50 | N30 | N20 | P27 | P50 | ||
| EBP | 1.07 (0.12) | 1.20 (0.09) | 1.09 (0.13) | 0.83 (0.11) | EBP | 1.06 (0.13) | 0.91 (0.16) | 0.95 (0.33) | 0.89 (0.11) |
| LBP | 1.09 (0.08) | 1.44 (0.09) | 1.07 (0.14) | 1.12 (0.16) | LBP | 1.25 (0.21) | 1.02 (0.17) | 1.12 (0.09) | 1.22 (0.24) |
| MVMT | 1.69* (0.15) | 1.06 (0.22) | 0.95 (0.24) | 0.62 (0.09) | MVMT | 1.12 (0.20) | 0.85 (0.10) | 1.04 (0.17) | 0.91 (0.22) |
| PMVMT | 1.08 (0.20) | 1.28 (0.18) | 0.94 (0.15) | 0.93 (0.29) | PMVMT | 0.95 (0.26) | 0.77 (0.10) | 1.21 (0.10) | 0.88 (0.11) |
| Right hand dominant | |||||||||
| Non-dominant hand movement | Dominant hand movement | ||||||||
| FCZ | CP4 | FCZ | CP3 | ||||||
| N30 | N20 | P27 | P50 | N30 | P20 | P27 | P50 | ||
| EBP | 1.07 (0.04) | 0.97 (0.07) | 0.96 (0.06) | 1.00 (0.08) | EBP | 1.02 (0.15) | 1.11 (0.19) | 1.06 (0.09) | 1.16 (0.29) |
| LBP | 1.10 (0.04) | 1.04 (0.07) | 0.91 (0.09) | 0.94 (0.12) | LBP | 1.05 (0.13) | 1.19 (0.23) | 1.27 (0.15) | 1.19 (0.49) |
| MVMT | 1.24* (0.08) | 1.15 (0.10) | 0.87 (0.08) | 0.56 (0.13) | MVMT | 0.79 (0.09) | 1.01 (0.20) | 1.24 (0.21) | 1.18 (0.35) |
| PMVMT | 0.93 (0.11) | 1.11 (0.14) | 0.93 (0.09) | 1.13 (0.26) | PMVMT | 0.94 (0.08) | 1.28 (0.27) | 1.32 (0.20) | 1.41 (0.47) |
Mean (± SEM) of labelled potentials recorded from labelled electrode sites (FCZ, CP3/4) as a result of median nerve stimulation contralateral to hand movement. Top data from left hand dominant group; bottom data from right hand dominant group. (EBP) early Bereitschaftspotential; (LBP) late Bereitschaftspotential; (MVMT) movement; (PMVMT) post movement. All values are expressed relative to control value (1.00). * denotes significance p < 0.05.