Table 1.
Latencies and amplitudes of brain responses evoked by noxious radiant heat (LEPs) and contact heat (CHEPs) stimulation of the hairy and glabrous skin of the hand in healthy subjects
| N2 wave | P2 wave | N1 wave* | ||||
|---|---|---|---|---|---|---|
| Latency (ms) | Amplitude (μV) | Latency (ms) | Amplitude (μV) | Latency (ms) | Amplitude (μV) | |
| LEPsdorsum | 213 ± 17 | 24 ± 9.9 | 320 ± 21 | 23.2 ± 3.6 | 170 | 5.9 |
| LEPspalm | 211 ± 17 | 19.5 ± 6.3 | 334 ± 28 | 21.7 ± 5.7 | 162 | 4.3 |
| CHEPsdorsum | 372 ± 50 | 13.9 ± 0.9 | 500 ± 42 | 18.9 ± 5 | 350 | 3.6 |
| CHEPspalm | 466 ± 86 | 8.3 ± 2.5 | 620 ± 80 | 10.8 ± 4.9 | — | — |
Values are the average of single-subject, single-trial data ±s.d.; s.d. shows the variability between subjects.
*
Latency and amplitude values are measured from standard-averaged data. LEPsdorsum, LEPspalm, CHEPsdorsum, CHEPspalm.