New neurological research has answered the question of whether amnesia is caused by damage to the specific brain cells that hold the lost memories, or if access to the memories in those cells are being blocked. And in the process, this research may have uncovered a way to recover memories that were previously lost.
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Researchers at MIT have successfully implanted false memories in mice. Using a technique called optogenetics, researchers were able to isolate neurons controlling a single memory in the brain, tag them, then later stimulate them with light to induce the memory.

“If mice had Hollywood, this would be ‘Inception’ for them,” said Steve Ramirez, one of the lead researchers of the study, referring to the 2010 science-fiction film. The study was published online in the journal Science.
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