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.
Example of a single trial: First, a fixation cross is shown from 750 to 1250 ms; then, two of the four options are shown and a choice has to be made; finally, the reward corresponding to both options is presented, and the reward corresponding to the chosen option (highlighted by a black rectangle) is collected
