Most of us would’ve experienced Deja Vu without knowing What is Deja Vu and How Deja Vu occurs. Literally, ‘déjà vu’ in French means, ‘Already seen’.
Deja Vu is the phenomenon having the strong sensation that an event or experience currently being experienced has been experienced in the past, whether it has actually happened or not.
Though there is no perfect reasoning for How Deja Vu occurs, This TED Ed video explains the most accepted 3 Theories that explain Deja Vu.This TED Education video ‘What is déjà vu?’ by Michael Molina along with the clear animation by Josh Harris, tries to explain the phenomenon of deja vu.
The description of the video explains,
You might have felt it — the feeling that you’ve experienced something before, but, in reality, the experience is brand new. There are over 40 theories that attempt to explain the phenomenon of déjà vu. Michael Molina explains how neuroimaging and cognitive psychology have narrowed down the theories that could explain that feeling you’re having…again.
Got it? By the way, Don’t you remember that you’ve previously read the same article here? <déjà vu>
[Source TED Ed]