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.
Representation of the task paradigm with the central (Ring1) and the paracentral (Ring2) flickering checkerboard rings and the interstimulus intervals. During the passive viewing condition, participants had to fixate the central red cross. During the visual memory task condition, participants pressed a button every time a repeated ring appeared (one-back task). Scale of the fixation dot has been changed to enhance visibility.
