Table 1.
Parameters of the Conditioned Pain Modulation (CPM)
| 10° condition | 24° condition | |||||
|---|---|---|---|---|---|---|
| PCES-induced pain (NRS 0–100) | PCES- amplitude (μV) | PCES-latency (ms) | PCES-induced pain (NRS 0–100) | PCES-amplitude (μV) | PCES-latency (ms) | |
| baseline | 52.6 ± 4.4 | 42.1 ± 13.4 | 130.7 ± 10.5 | 52.7 ± 5.0 | 37.8 ± 8.3 | 132.2 ± 12.1 |
| during CS | 30.3 ± 12.5 | 28.7 ± 10.5 | 133.5 ± 11.9 | 47.1 ± 7.8 | 34.5 ± 5.8 | 133.9 ± 12.8 |
| after CS | 46.6 ± 10.4 | 37.9 ± 11.7 | 133.3 ± 12.8 | 50.6 ± 9.6 | 33.6 ± 7.1 | 134.5 ± 11.8 |
| CPM-effect (abs.) | −22.4 ± 13.6 | −13.5 ± 6.4 | 2.8 ± 6.2 | −5.6 ± 6.5 | −3.3 ± 4.7 | 1.6 ± 4.8 |
| CPM-effect (rel.) | 42.0 ± 24.3% | 32.0 ± 10.7% | −2.1 ± 5.1% | 10.5 ± 12.6% | 7.2 ± 11.0% | −1.3 ± 3.7 |