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.
Behavioral responding and Acb cell firing during extinction (phase 2). a, One-month-abstinent rats exhibited significantly more lever presses for the CS than the 1 d rats during extinction. **p < 0.01. b, Examples of representative behavioral response patterns (vertical lines above PEHs) and Acb cell firing in a 1 d rat (top) versus a 1 month rat (bottom).
