“A new study suggests only a small chunk of the brain, called the dentate gyrus, is responsible for ‘episodic’ memories–information that allows us to tell similar places and situations apart.
Déjà vu is a memory problem, occurring when our brains struggle to tell the difference between two extremely similar situations. As people age, déjà -vu-like confusion happens more often–and it also happens in people suffering from brain diseases like Alzheimer’s.”
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