An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Gratton A, Wise RA.Gratton A, et al. Among authors: wise ra.Brain Res. 1983 Sep 5;274(1):25-30. doi: 10.1016/0006-8993(83)90518-8.Brain Res. 1983.PMID: 6616257