Table 2.

Subject responses to GNS.

Subject	Sensation threshold (mA)	Pudendal-anal threshold (mA)	Tolerance limit (mA)	GNS amplitude (mA)	Bladder contraction inhibited?	Baseline bladder volume (mL)	Bladder capacity increase (mL)
1	9	8	15	15	Y	249	0
2	6	10	30	20	Y	282	0
3	3	6	8	7	Y	222	127
4	8	8	35	16	NA	148	NA
5	2	NA	>60	30	N	479	113
6	3	6	12	12	Y	445	0
7	5	9	15	15	Y	201	110
8	6	NA	40	30	Y	455	320
9	8	17	60	50	Y	572	109
10	6	NA	20	20	N	295	55
11	7	NA	22	20	Y	409	84
12	14	14	22	22	Y	343	187
13	2	17	>60	40	Y	90	203
14	15	NA	30	30	Y	47	0
15	3	8	9	8	Y	245	170
16	4	8	30	28	Y	560	65
17	9	14	36	28	Y	122	162
18	2	4	9	8	N	180	130
19	20	4	40	30	Y	485	283
20	4	10	14	14	N	297	91
21	6	4	45	30	Y	181	408
22	5	6	35	30	Y	165	302
23	5	20	25	25	Y	389	72
24	3	7	30	30	Y	353	117
Summary	6±4	8±5	30±16	25±11	19/23	301±149	135±109

No pudendal-anal reflex was observed in subjects 5, 8, 10, 11, or 14. Subject 4 demonstrated symptoms of autonomic dysreflexia, due to filling the bladder during urodynamics, before collecting data on effectiveness of GNS. In subject 4 GNS was applied with the bladder empty and no AD occurred at 35 mA, and therefore sensation and tolerance data were collected.