Figure 4.
Effects of oral prazosin (PRZ, 2 mg/kg) and naltrexone (NTX, 10 mg/kg), alone or in combination, on intake of a solution of [3% sucrose + 0.125% saccharin] during 1-h, 5-min or 2-min access in Expt. 2 (as noted in Fig. 3). Each bar represents data from 12-13 rats. *** p<0.001, ** p<0.01, * p<0.05 vs vehicle (VEH).