What Happens In The Brain During Déjà Vu?
Déjà vu—the mysterious feeling you've already experienced something you're doing for the first time—is difficult to reproduce in a laboratory setting, and therefore hard to study. There are dementia patients who experience continuous déjà vu, thought to be caused by a damaged medial temporal lobe.
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Key Facts In This Video
Déjà vu occurs most commonly between the ages of 15 and 25. (0:24)
The medial temporal lobe is essential for long-term memory, and houses both the rhinal cortex and the hippocampus. (0:46)
People with epilepsy tend to experience déjà vu more frequently. (1:16)