The content is available as a PDF (1.5 MB).
. 1996 Jan 15;16(2):595–604. doi: 10.1523/JNEUROSCI.16-02-00595.1996
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.