Fig. 1.

At a dose of 2 mg/kg psilocin produced BOLD signal decreases in the cingulate cortex compared to vehicle treated controls while a dose of 0.03 mg/kg produced no change (A). Signal decreases were also observed at a dose of 2 mg/kg in the somatosensory cortex (C). The same dose produced signal increases in the amygdala and hypothalamus while a dose of 0.03 mg/kg produced no change in the same regions (B). All experimental groups have N = 6.