Fig. 1.
A: The study design for Experiment 1 and Experiment 2. B: Brain regions dissected for western blot analysis. C: An example image of western blot showing increased c-Fos levels 2 h after a high dose of ketamine infusion (40 mg/kg/2 h). NF/SAL: No fear conditioning & IV saline infusion, NF/KET: No fear conditioning & IV ketamine infusion, F/SAL: Fear conditioning & IV saline infusion, F/KET: Fear conditioning & IV ketamine infusion.