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.
Fear-potentiated startle test after overtraining of trace conditioning. Startle was probed 3.5 sec after CS onset (sparse shading), 7.0 sec after CS onset (stripes), and 10.5 sec after CS onset (dense shading). Fear-potentiated startle was observed before and during the anticipated occurrence of the US, but not 3-sec after its offset. There were no significant differences between groups. ‡P < 0.10.
