The Science Behind Déjà Vu Explained

Added: 2026-06-10

[00:00:00]Have you ever had a moment where you suddenly felt I've lived this before.

[00:00:06]The room feels familiar.

[00:00:08]The conversation feels familiar. [music] For a few seconds, it feels like you're replaying a memory.

[00:00:15]That [clears throat] experience is called deja vu and scientists have been studying it for decades.

[00:00:22]One leading explanation is that the brain briefly misfiles a new experience as an old one.

[00:00:29]In other words, something happening right now gets mistakenly tagged as a memory.

[00:00:36]Another idea is that your brain recognizes a subtle detail from a past experience, even if you're not consciously aware of it. What's fascinating is that deja vu is most common in younger people and becomes less frequent with age.