Table 2.

Descriptive statistics: physiologic MEP data obtained from healthy neonatal lambs for each of the 5 parameters per recording (threshold, latency, area-under-the-curve, peak-to-peak and duration). MEP, motor evoked potential; AUC, area-under-the-curve; P2P, peak-to-peak; R; right side; L, left side; FL, forelimb MEP recording; HL, hindlimb MEP recording; SD, standard deviation; ms, milliseconds.

MEP recording		Parameter	Mean ± SD	Range
Right motor cortex stimulation	R-FL	Threshold (Volts)	15.0 ± 5.80	10.0–25.0
		Latency (ms)	15.6 ± 2.38	10.2–23.2
		AUC	31.0 ± 20.78	8.1–92.6
		P2P (Volts)	0.68 ± 0.54	0.14–2.57
		Duration (ms)	30.9 ± 5.21	11.2–40.2
	L-FL	Threshold	18.4 ± 12.30	10.0–45.0
		Latency	16.9 ± 2.45	10.8–20.6
		AUC	16.3 ± 13.21	3.6–57.0
		P2P	0.48 ± 0.43	0.06–2.09
		Duration	25.8 ± 9.59	8.5–75.2
	R-HL	Threshold	26.7 ± 11.08	15.0–45.0
		Latency	20.7 ± 4.63	12.4–37.1
		AUC	7.1 ± 3.47	1.9–17.1
		P2P	0.19 ± 0.14	0.05–0.52
		Duration	25.0 ± 8.39	7.4–40.5
	L-HL	Threshold	30.0 ± 12.64	15.0–55.0
		Latency	19.8 ± 3.28	11.7–25.6
		AUC	12.6 ± 10.41	0.3–35.8
		P2P	0.23 ± 0.20	0.00–0.75
		Duration	27.3 ± 8.11	10.2–40.8
Left motor cortex stimulation	L-FL	Threshold	16.7 ± 4.73	10.0–25.0
		Latency	16.8 ± 1.57	13.8–21.5
		AUC	23.5 ± 11.03	5.1–59.4
		P2P	0.58 ± 0.45	0.01–2.06
		Duration	28.9 ± 8.62	3.0–83.6
	R-FL	Threshold	18.5 ± 3.92	15.0–25.0
		Latency	16.0 ± 3.57	12.9–44.2
		AUC	31.1 ± 15.00	1.3–75.6
		P2P	0.56 ± 0.24	0.21–1.39
		Duration	31.0 ± 5.76	8.7–41.1
	L-HL	Threshold	24.2 ± 8.41	15.0–35.0
		Latency	19.4 ± 2.70	14.7–24.7
		AUC	10.3 ± 6.19	2.5–22.6
		P2P	0.20 ± 0.12	0.05–0.44
		Duration	28.1 ± 7.70	12.8–39.9
	R-H	Threshold	31.7 ± 12.18	20.0–55.0
		Latency	19.8 ± 3.76	14.6–41.7
		AUC	8.6 ± 8.04	1.2–36.4
		P2P	0.17 ± 0.14	0.02–0.64
		Duration	26.4 ± 8.88	9.3–71.4