Stimulation of sciatic nerve (5 s at 33 Hz, 1, 2, 4, 6, 8, and 10 mV with 3 min between stimuli) evoked brief rises in SNA and MAP in a control rat (A) and a rat exposed to CIH (B). The rises in SNA were exaggerated in rats exposed to CIH (n = 11) compared to control rats (n = 10, C). *Significantly different from control rats at that stimulus intensity, P < 0.05, 2- way repeated measures ANOVA with Tukey–Kramer post hoc tests.