Why do we experience déjà vu, and what causes it?

We feel like we’ve seen something before even though it’s actually new, that’s déjà vu!

Imagine you’re eating your favorite sandwich, and suddenly it feels like you’ve had this exact same sandwich at the same table before. It’s not magic, it’s just your brain playing a little trick on you.

Your brain is like a super-smart detective that checks everything out as it happens. Sometimes, it takes a tiny moment to catch up with what’s going on around you. When this happens, part of your brain might think something is familiar, even if it's not! It’s like when you're reading a book and suddenly you feel like you've read that whole chapter before, but you haven’t. Your brain just took a little detour.

Sometimes, your brain gets confused between things that are similar. For example, you might be in a room that looks kind of like the one you were in yesterday, and boom, there it is: déjà vu! It’s not because time travel happened, it's just your brain giving itself a little head-scratcher moment. We feel like we’ve seen something before even though it’s actually new, that’s déjà vu!

Imagine you’re eating your favorite sandwich, and suddenly it feels like you’ve had this exact same sandwich at the same table before. It’s not magic, it’s just your brain playing a little trick on you.

Sometimes, your brain gets confused between things that are similar. For example, you might be in a room that looks kind of like the one you were in yesterday, and boom, there it is: déjà vu! It’s not because time travel happened, it's just your brain giving itself a little head-scratcher moment.