Optical Illusion:
: something that looks different from what it is : something that you seem to see but that is not really there.
Types of Optical Illusions:
A cognitive illusion happens when the brain perceives an object based on prior knowledge or assumptions. The photo we discussed earlier was a good example of a cognitive illusion. The brain was looking for something familiar which ended up being either two faces or a vase.
A literal illusion is when the brain depicts an image that is completely different than the objects that create it.
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