In Target Tracker, the exercise will start by displaying a few target objects—bubbles, puffer fish, or jellyfish—on the screen. Then, many more “distractors” are added to the screen (more bubbles, puffer fish, or jellyfish). The task at hand is to keep track of the targets as all of the objects move around the screen. When the objects stop moving, click on each of the original targets to identify them.
For more information on this exercise click here.