The content is available as a PDF (111.8 KB).
. 2001 Oct 1;21(19):RC170. doi: 10.1523/JNEUROSCI.21-19-j0005.2001
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.