A graphic depiction of the sequence of events in the experiment from top left to bottom right.
First, a person looks at a blank screen and imagines a green pattern. Next, she puts on the red-green glasses and looks at a screen with two superimposed patterns: one green and one red. The green pattern is visible to one eye and the red image is visible to the other eye. The longer she has spent imagining the green pattern, the more likely it is that she will see the green pattern, demonstrating that what people imagine can influence what they see later in time.