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A split brain

One side of your brain is usually 'in charge' of a particular skill - for example, in most people, the left side of the brain deals with language. One explanation for déj vu is that there is a split-second delay in transferring information from one side of the brain to the other. One side of the brain would then get the information twice - once directly, and once from the 'in charge' side. So the person would sense that the event had happened before.

An explanation for déj vu is that one side of your brain gets the same information twice.

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