The decoder rat had the same types of levers in its chamber, but it did not receive any visualcue indicating which lever it should press to obtain a reward.
Colored squares on the data tags for airplanes on the controller's radar screen change as pilots respond so that controllers get an extra visualcue in case a pilot doesn't see a message.
Each participant was told that he or she would compete against an unseen opponent in a 25-trial computer game in which the object was to be the first to respond to a visualcue on the computer screen.
The barred G chord in the third position will subsequently be noted with a 3 listed on the low E string, and as you can tell in the picture above, the accompanying bar will elevate on a string-by-string basis to provide a slight visualcue as to how far from the first-finger fret your other digits go.