"The phenomenon of multiple perception."
Ambiguous Example (Duck or Rabbit)
Ambiguous figures are one image that can be perceived as two different things. Usually the image that you first see relates more to you or your life experiences. This is due to the pattern that your brain creates for itself. Things that you are more used to are usually what you tend to see first. For example (going along with the image above) if you see the duck first then you probably have had more encounters with them (such as duck hunting). If you see the rabbit first, you probably have had more situations that had to do with rabbits.
"The Eye Beguiled." 3. Ambiguous Figures. N.p., n.d. Web. 18 Mar. 2015.
Kornmeier, Jürgen, and Michael Bach. "Ambiguous Figures – What Happens in the Brain When Perception Changes But Not the Stimulus." Frontiers in Human Neuroscience. Frontiers Research Foundation, n.d. Web. 18 Mar. 2015.
"Ambiguous Image." Wikipedia. Wikimedia Foundation, n.d. Web. 18 Mar. 2015.