Table 2.

MSNA Characteristics ON and OFF DRGS

Subject #	Level/Side Tested	DRGS ON						DRGS OFF
		HR	MSNA		BRS/DBP	BP (mm Hg)	VAS	HR	MSNA		BRS/DBP	BP (mm Hg)	VAS
			BF/BI	MRBA%					BF/BI	MRBA%
1	L1 left	88	32/36	48	−0.28 ± 0.261	161/71	0	90	39/43	40	−0.16 ± 0.138	185/53	0
2	L1 left	65	34/53	48	0.07 ± 0.452	207/112	0	67	39/58	52	—	—	0
3	L1 left	62	21/34	40	−0.02 ± 0.265	153/63	4	61	28/44	44	−0.04 ± 0.249	142/59	7
4	L2 left	83	20/23	33	−0.18 ± 0.295	150/65	1	92	31/34	47	−0.25 ± 0.243	226/91	6
5	L1 right	65	34/52	46	−0.05 ± 0.126	128/72	0	64	40/62	43	−0.08 ± 0.123	117/66	0
	L2 right	60	36/61	41	−0.11 ± 0.124	129/70	0	62	41/66	42	−0.17 ± 0.120	119/64	0
6	L1 right	81	21/26	55	0.06 ± 0.299	204/135	0.5	82	23/29	50	−0.05 ± 0.373	168/115	3
7	L2 right	56	17/30	36	−0.023 ± 0.338	151/79	5	58	15/26	31	−0.04 ± 0.411	154/77	7
8	L4 right	35	18/52	47	—	—	6	55	31/58	23	—	—	7
	L5 right	41	14/34	29	—	—	0	37	17/47	32	—	—	5
9	L5 left	78	29/37	44	−0.23 ± 0.293	162/102	0	82	34/42	37	−0.3 ± 0.296	164/102	0
10	L5 right	64	25/39	34	−0.108 ± 0.284	120/62	0	62	28/45	36	−0.077 ± 0.269	116/66	0
11	C6 left	80	34/42	36	—	—	2	80	40/50	37	—	—	6
12	C7 right	70	21/31	47	—	—	0	67	18/27	42	—	—	0
	C8 right	74	22/30	42	—	—	0	69	26/38	44	—	—	0
13	T11 left	64	17/26	53	0.06 ± 0.347	160/83	5	62	18/30	56	−0.17 ± 0.24	125/64	7
14	L3 left + right	82	18/22	25	—	181/76	7.5	81	16/20	25	—	185/84	3

Results are presented as Spearman correlations with 95% confidence intervals. VAS is on a scale of 0 to 10.

BF = burst frequency; BI = burst incidence; BRS = baroreflex sensitivity; C = cervical; DBP = diastolic blood pressure; DRGS = dorsal root ganglion stimulation; HR = heart rate; L = lumbar; MRBA% = median relative burst amplitude; MSNA = muscle sympathetic nerve activity; T = thoracic; other abbreviations as in Table 1.