Déjà Vu

Ever wonder how the strange déjà vu feeling happen? It’s had nothing to do with someone changing something in the matrix.

The term "déjà vu" (French for "already seen", also called paramnesia from the Greek word para for parallel and mnēmē for memory) describes the experience of feeling that one has witnessed or experienced a new situation previously. The term was coined by a French psychic researcher, Émile Boirac (1851–1917) in his book L'Avenir des sciences psychiques (The Future of Psychic Sciences), which expanded upon an essay he wrote while an undergraduate French concentrator at the University of Chicago. The experience of déjà vu is usually accompanied by a compelling sense of familiarity, and also a sense of "eeriness", "strangeness", or "weirdness". The "previous" experience is most frequently attributed to a dream, although in some cases there is a firm sense that the experience "genuinely happened" in the past. Déjà vu has been described as "remembering the future."

Basically, the brains receive many inputs (vision, smell, taste, etc). Under the normal process, all theses inputs are send in the conscious part of the brain. Then they are compared to what it is stored into your memory. Then the events (the collection of all the inputs at this moment) are stored into memory. This whole process only take a few milliseconds. This is who you can recognize your house or your lover. A déjà vu happen when the events (the inputs) would be stored into memory before the conscious part of the brain even receives the information and process it. This trigger the strange feeling of déjà vu because when the conscious part of the brain interrogate your memory for similar information, your memory will told you that an exact copy of this information is already stored … leading you to believe that this particular event have somehow already happened in the past.