Vague, but interesting.
Origin of Deja Vu Pinpointed
The brain cranks out memories near its center, in a looped wishbone of tissue called the hippocampus. But a new study suggests only a small chunk of it, called the dentate gyrus, is responsible for “episodic” memories—information that allows us to tell similar places and situations apart.
The finding helps explain where déjà vu originates in the brain, and why it happens more frequently with increasing age.
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