Effects of THC on dynamic resting-state functional connectivity of fear-extinction circuitry. Variance in sliding-window correlation values between fear-extinction regions of interest in THC (A) and PBO (B) groups, and significant group differences (C). THC, Δ9-tetrahydrocannabinol (green); PBO, placebo (orange); AMYG, amygdala; HPC, hippocampus; vmPFC, ventromedial prefrontal cortex