I Know About Deja Vu, I'll Show You

By: Miranda Brittain

Why I Chose This Topic

I chose deja vu, because it is very interesting how the brain works and ive had many cases in my life with deja vu. I think learning more about it will help people by giving them an explanation of what goes on in our brains.

About Deja Vu

Deja vu is having a feeling you have had this situation happen before. It may not have actually happened before, but something like it has happened and your brain remembers it, thinking it is the same time.

The Brain:

Remembering anything requires two processes, familiarity and recollection. Familiarity happens in an instant and very fast, while recollection does not. Familiarity depends on the medial temporal cortex, and recollection depends on the hippocampus and prefrontal cortex.

The research and Psychologist

Neppe research: Shows there are at least four specific subtypes of déjà vu corresponding to diagnostic categories.
MIT's Picower Institute for Learning and Memory: Found in mice brains that it is a sort of memory-based analogue of an optical illusion.

Other interesting information:

Deja vu means "already seen" in French. What we think has happened before, most likely never has. In 60-80% of people experience deja vu regularly.