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.
An overview of the cognitive performance test on Navy personnel. (a) Screen display with fixation cross hair and horizontal rectangles (b) Stimulus presentation without cue (no cue) (c) Stimulus presentation following a valid cue (d) Stimulus presentation following an invalid cue
