The effects of a low dose IV ketamine infusion (10 mg/kg/2 h) on c-Fos, BDNF, and pERK levels in the mPFC, amygdala, and hippocampus of rats. A: The IV ketamine infusion did not alter c-Fos levels in the mPFC, amygdala, and hippocampus. B: The IV ketamine infusion selectively increased BDNF levels in the amygdala, but not in mPFC and hippocampus of rats. C: The IV ketamine infusion reduced pERK levels in the mPFC and hippocampus, but not in amygdala of rats. Data shown as mean ± standard error of mean. (*p < 0.05).