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The Necker cube is used in epistemology (the study of knowledge) and provides a counter-attack against naïve realism. Naïve realism (also known as direct or common-sense realism) states that the way we perceive the world is the way the world actually is. The Necker cube seems to disprove this claim because we see one or the other of two cubes, but really, there is no cube there at all: only a two-dimensional drawing of twelve lines. We see something which is not really there, thus (allegedly) disproving naïve realism. This criticism of naïve realism supports representative realism. Necker cube -http://en.wikipedia.org/wiki/Necker_cube#Epistemology
The Necker cube is a paradigmatic example for bistable perception where pattern reversal obeys a particular probability distribution. Atmanspacher, Filk and Römer (2004) discussed this switching dynamics in terms of the quantum Zeno effect where “observation” (here attending to a percept) increases the dwell-time of an otherwise fast decaying unobserved state. Quantum Cognition, Bistable perception
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See Also:
Dialogos of Eide 