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.
The passive avoidance test.
(A) A guillotine-like door to a visibly securer dark chamber. (B) A rectangular chamber is divided into two compartments: lightened by an overhead stimulus light, and dark. (C) Shock settings (0.3 mA, 2-second duration) and time evaluation (cut-off time 180 seconds).
