Please select the button (0 or 1) that you think will be the target. This is an intuition task, so do not overthink it. One selection is one trial. A "run" consists of 100 trials in a row.
On most trials you will receive immediate feedback. Each time you correctly select the target, the image will become more colorful. Otherwise, it will stay the same as it was on the previous trial. On some trials you will not receive feedback.