Table 1.

Summary of mean N1b and N1c amplitudes and incidence.

		Depth (%)	N1b		N1c (LT)		N1c (RT)
			Count	Amplitude (μV ± SD)	Count	Amplitude (μV ± SD)	Count	Amplitude (μV ± SD)
AM change		100	10/10	−3.7 (1.7)	7/10	−0.8 (1.2)	10/10	−2.1 (0.8)
	4	50	10/10	−1.6 (0.8)	8/10	−0.3 (0.6)	9/10	−1.0 (0.6)
		25	9/10	−0.7 (0.4)	0/10	−	7/10	−0.3 (0.4)
		100	10/10	−4.4 (1.5)	9/10	−0.9 (0.7)	9/10	−1.5 (1.2)
	40	50	10/10	−2.0 (1.1)	8/10	−0.6 (0.6)	8/10	−0.6 (0.6)
		25	7/10	−0.5 (0.8)	0/10	−	0/10	−
		100	9/10	−1.2 (0.6)	7/10	−0.5 (0.6)	7/10	−0.2 (0.6)
	300	50	6/10	−0.6 (0.7)	0/10	−0.6 (0.5)	0/10	−0.4 (0.3)
		25	0/10	−	0/10	−	0/10	−
AM burst	4	100	8/10	−0.9 (1.6)	8/10	−0.7(0.7)	7/10	−0.4 (0.5)
	40	100	8/10	−1.9 (1.6)	9/10	−1.2 (0.9)	10/10	−0.9 (0.5)
	300	100	10/10	−2.2 (1.4)	9/10	−1.1 (0.7)	9/10	−0.9 (0.7)