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In recent years, as more scientists began studying this phenomenon, a number of theories about déjà vu have emerged, suggesting that it is not merely a glitch in our brain's memory system.
reply to post by nighthawk1954
... there may be something more to Déjà Vu than the brain spasm theory but then again it is the most likely explanation ,
but I think just because we can replicate it in a lab doesn't mean that there isn't an external source triggering it .