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.
Hegde AN, Upadhya SC.Hegde AN, et al.Trends Neurosci. 2007 Nov;30(11):587-95. doi: 10.1016/j.tins.2007.08.005. Epub 2007 Oct 24.Trends Neurosci. 2007.PMID: 17950927Review.