Summary for effects of different treatments on cSCS-induced cerebral vasodilation. A: Responses of ipsilateral CBF to cSCS at 90% of MT before and after intravenous hexamethonium (He., n=7), spinal transection at C6-C7 segments (n=7), intrathecal ibotenic acid (IA, 0.3mg/ml, 0.1ml, 20min) on C1-C2 spinal segments (n=7), bilateral dorsal column (DC) transection at rostral C1 segment (n=8), and cutting at rostral C1 segment (n=7). B: Responses of ipsilateral CVR to cSCS at 90% of MT before and after various treatments. Values are expressed as the mean±SE. Statistical comparisons were made using two-way ANOVA. □P<0.05, □□ P<0.01, comparison before and after the treatments.