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.
Experiment 5. Experimental design (A) and mean percent total time spent freezing (B). Acute PL-Ptx reduced freezing in a conditioned context on Day 1. Ptx treatment on Day 1 did not significantly alter the expression of fear on subsequent days (Days 2–8). Bars, SE.
