Table 2.

Abdominal withdrawal reflex score of rats (mean ± SE, n = 6/group).

Group	20 mm Hg	40 mm Hg	60 mm Hg	80 mm Hg
Normal	0.33 ± 0.21	1.00 ± 0.26	2.17 ± 0.31a	3.17 ± 0.31a
Model	0.33 ± 0.21	1.83 ± 0.31a	3.33 ± 0.33a	3.83 ± 0.17b
Low-dose SNS	0.50 ± 0.22	1.17 ± 0.17	3.33 ± 0.21b	3.82 ± 0.17b
Middle-dose SNS	0.33 ± 0.21	1.00 ± 0.26	3.00 ± 0.26b	3.17 ± 0.31a
High-dose SNS	0.33 ± 0.21	1.00 ± 0.26	3.00 ± 0.26a	3.50 ± 0.22b

^a P < 0.01, ^bP < 0.001, vs. the distension of 20 mm Hg in the same group.