Table 1.

Peak latency and amplitude and peak-to-peak amplitude of the event-related potentials

	Lance
	Inactive compound	Mustard oil	Control Sham
N
Amplitude, μV	−10.78 ± 5.82	−8.63 ± 4.34	−6.67 ± 5.87
Latency, ms	130 ± 40	138 ± 41	103 ± 33
P
Amplitude, μV	9.07 ± 5.21	7.59 ± 4.65	5.12 ± 4.81
Latency, ms	258 ± 61	240 ± 45	178 ± 36
Peak to peak, μV	19.85 ± 9.45	16.22 ± 8.44	11.79 ± 9.11

Values are mean ± SD latency at the peak and N and P components' and peak-to-peak amplitude of the event-related potential after lance in the presence of inactive compound or mustard oil and after control sham stimulation.