Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Neural circuits associated with expression of conditioned fear and fear extinction memory overlap with limbic areas that reactivate during REM sleep from quiescence state in NREM sleep. (A) fear expression network (B) fear extinction network. (C) anterior paralimbic REM activation area. Hipp, hippocampus; vmPFC, ventromedial prefrontal cortex; dACC, dorsal anterior cingulate cortex; a, amygdala.
