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.
Two possible mechanisms of protection. A) High cognitive/motor reserve where the brain can sustain more neuropathological damage before the onset of overt clinical symptoms. B) High brain resilience may delay onset of neuropathology and then slow the rate of decline.
