The Rubber Hand Illusion: Is Seeing Believing?
This video demonstrates bottom up perception overriding top down knowledge. Initially, the participants had top down knowledge that the rubber hand was not their hand. Although the rubber hand looks similar to a real hand, it is clear the rubber hand is not a real hand. As the participants' real hand (that was hidden) and the rubber hand (not hidden) began being stimulated simultaneously, the participants' bottom up perception overrode their top down knowledge, and felt the rubber hand was their real hand. This was evident when the hammer hit the rubber hand and the participants reacted as if the hammer was hitting their real hand. This illusion demonstrates how our senses have the ability to deceive us, showing that seeing should not necessarily lead to believing.
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