Table 2.

N1 and N2P2-amplitudes, and pain scores by phase and block

			N1 (μV)		N2P2 (μV)		Pain scores
	N	n	Block 1	Block 2	Block 1	Block 2	Block 1	Block 2
Interictal	44	99	6.6 (3.5)	5.9 (2.6)	40.2 (16.6)	35.2 (13.8)	4.2 (1.9)	4.3 (2.0)
Preictal	26	36	7.9 (5.0)	6.3 (3.6)	42.3 (13.4)	37.3 (11.2)	4.1 (1.9)	4.4 (2.0)
Ictal	19	21	5.7 (2.2)	5.0 (2.2)	39.6 (12.8)	34.6 (10.1)	4.4 (1.7)	4.7 (1.9)
Postictal	13	15	6.8 (3.0)	4.9 (3.7)	45.7 (13.7)	43.2 (12.5)	5.4 (2.6)	5.7 (2.7)

Mean (SD) N1 and N2P2-amplitudes, and pain scores. The means were calculated in two steps; first, phase-specific means for each subject (most subjects had two or more measurements classified within the same phase), before phase-specific means in all subjects combined. Because some N1-amplitudes were interval censored, i.e., defined only by a minimum and maximum with the actual value somewhere in between, the interval midpoints were used as approximate estimates to calculate the means. N: number of subjects with at least one recording at the respective phase. n: total number of recordings at the respective phase