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.
Mean look duration (sec) and percentage of time spent in sustained attention (SA) for each test trial. Mean look duration is plotted on the left axis and percentage of time spent in SA is plotted on the right axis. Error bars correspond to one standard error.
