Table 2. Contact heat evoked potentials: Summary of N2 and P2 latencies, N2P2 amplitude, N1 latency, N1 amplitude, and pain rating.

Group	Time-point of Stimulation
Cold	Neutral 32 °C	Cold 20 °C
N2 Latency [ms]	267.5 ± 24.1	268.2 ± 26.3
P2 Latency [ms]	394.8 ± 51.7	391.8 ± 45.4
N2P2 Amplitude [μV]	34.5 ± 12.9	30.1 ± 11.7
Pain rating (NRS)	4.2 ± 2.7	4.0 ± 1.7
N1 Latency [ms]	210.9 ± 48.8	214.3 ± 31.5
N1 Amplitude [μV]	−7.8 ± 3.1	−6.2 ± 3.5
Warm	Neutral 32 °C	Warm 40 °C
N2 Latency [ms]	275.8 ± 26.7	275.8 ± 11.3
P2 Latency [ms]	393.63 ± 38.8	397.5 ± 35.1
N2P2 Amplitude [μV]	33.3 ± 12.1	28.9 ± 11.3
Pain rating (NRS)	3.5 ± 1.6	3.5 ± 1.6
N1 Latency [ms]	231.38 ± 26.4	219.7 ± 23.6
N1 Amplitude [μV]	−6.8 ± 2.6	−6.9 ± 3.1
TGI	Neutral 32 °C	TGI 20/40 °C
N2 Latency [ms]	273.2 ± 36.3	267.9 ± 25.5
P2 Latency [ms]	388.2 ± 45.0	384.6 ± 42.4
N2P2 Amplitude [μV]	33.0 ± 12.7	36.2 ± 13.6
Pain rating (NRS)	4.0 ± 1.6	4.3 ± 1.8
N1 Latency [ms]	222.0 ± 20.5	223.3 ± 24.5
N1 Amplitude [μV]	−6.8 ± 1.8	−8.0 ± 2.6

Results are displayed as mean ± standard deviation.

^‡Bonferroni corrected.