Representative tracings and time course changes in mean arterial pressure (ΔMAP), heart rate (ΔHR) and percent change of plasma NE evoked by i.c WIN55,212-2 (Veh + 15 μg WIN55) or its vehicle, indicated by arrow (top panel), in conscious rats intracisternally pretreated, 10 min earlier, with 0.1 μg/rat of the selective GABAAR agonist muscimol (Muscimol + 15 μg WIN55) or its vehicle (Muscimol + Veh). Values are mean ± S.E.M. of 6 to 8 observations. * or # P < 0.05 versus respective “Muscimol+ Veh” or “Muscimol+15 μg WIN55” values, respectively.