Changes

An [[optical illusion]] is always characterized by visually perceived images that, at least in common sense terms, are deceptive or misleading. Therefore, the [[information]] gathered by the eye is processed by the brain to give, on the face of it, a  [[percept]] that does not tally with a physical measurement of the stimulus source. A conventional assumption is that there are physiological illusions that occur naturally and cognitive illusions that can be demonstrated by specific visual tricks that say something  more basic about how human perceptual systems work.

An [[optical illusion]] is always characterized by visually perceived images that, at least in common sense terms, are deceptive or misleading. Therefore, the [[information]] gathered by the eye is processed by the brain to give, on the face of it, a  [[percept]] that does not tally with a physical measurement of the stimulus source. A conventional assumption is that there are physiological illusions that occur naturally and cognitive illusions that can be demonstrated by specific visual tricks that say something  more basic about how human perceptual systems work.

The human brain constructs a world inside our head based on what it samples from the surrounding environment. However sometimes it tries to organise this information it thinks best while other times it fills in the gaps [http://portal.acm.org/citation.cfm?id=1326364.1326487&coll=&dl=&CFID=11849883&CFTOKEN=72040242 ''First-order modeling and stability analysis of illusory contours'']. This way in which our brain works is the basis of an illusion.

The human brain constructs a world inside our head based on what it samples from the surrounding environment. However sometimes it tries to organise this information it thinks best while other times it fills in the gaps [http://portal.acm.org/citation.cfm?id=1326364.1326487&coll=&dl=&CFID=11849883&CFTOKEN=72040242]. This way in which our brain works is the basis of an illusion.

==Auditory illusions==

==Auditory illusions==