Deja-vu , what causes it?
962214
Deja-vu is a feeling your somewhere where you've been before, basically your meant to be there for some reason or another.\n\nadded\nIn the late 19th and early 20th Centuries, it was widely believed that déjà vu could be caused by the mis-timing of neuronal firing. This timing error was thought to lead the brain to believe that it was encountering a stimulus for the second time, when in fact, it was simply re-experiencing the same event from a slightly delayed source. A number of variations of these theories exist, with miscommunication of the two cerebral hemispheres and abnormally fast neuronal firing also given as explanations for the sensation. Perhaps the most widely acknowledged neuronal theory is the optical pathway delay theory which explains déjà vu as being the product of a delayed optical input from one eye. Closely following the input from the first eye (when it should be simultaneous), this misleads conscious awareness and suggests a sensation of familiarity when there should not be one. Although intuitively plausible, this theory is untestable due to the minute times involved in neuronal firing, and inconsistent with reports that blind individuals experience déjà vu in the same way as sighted individuals (O'Connor & Moulin, 2006).
125229
Before you come in this body, you see your whole life from the beginning as baby till the end, when You die. But after your age of seven you forget everything. there is only an echo who stays...A deja-vu is that echo. Why a person can fall in love to another one and be sure, that he or she is the right one...only because he has seen the film of his life before. "Coincidence" is an invention from people who are not believing in "Destiny".
55264
Nobody knows for sure. "During the past two decades, however, a few hardy souls have reopened the scientific study of déjà vu. They hope to nail down a persuasive explanation of the phenomenon, as well as shed light on some fundamental elements of memory and cognition. In the new book The Déjà Vu Experience: Essays in Cognitive Psychology (Psychology Press), Alan S. Brown, a professor of psychology at Southern Methodist University, surveys the fledgling subfield. 'What we can try to do is zero in on it from a variety of different angles,' he says. 'It won't be something like, "Boom! The explanation is there." But we can get gradual clarity through some hard work.'\n\nThe four current theories are \n\n1. dual processing\n2. neurological \n3. actual similarity in memories\n4. double perception\n\nTo get more information on these theories, please read the article linked below.
687050
I believe de ja vu is directly tied to dreams as well. It seems I will dream of a setting I've never been to before and then later on I find myself in that same exact setting I had dreamed. I say to myself, wow de ja vu, and thinking back I realize it was from a dream. Sometimes the dream seemed to match the experience 100%. Other times I question the accuracy. However, when the de ja vu happens, most of the time it gives me the chills and when I realize I had dreamed of this new place before, and yet I was seeing it in reality for the first time it is a powerful sensation. Sometimes I have to stand there and just take in the setting for a few minutes before I can move on. Many times when de ja vu's occur for me, i am experiencing a new unique experience in my life, like a signal that I'm turning the  page of a story book except that the book is my life.
562329
Everyone's had it.\n\nI think it's like a delay of your mind between what you see and what your brain sees, making you feel you've seen that before.\n\nOr something like that.\n\nCheck this website: http://en.wikipedia.org/wiki/Deja_vu
881402
well, that could be a supernatural phenomenon cause it happend to me before\nor that might be a guy broke in to your house, open the AC and stand in your room -.- \nor that could be a bat or some kind animal\nor you were high\nor you were dreaming\nor you began to have some kind serious psychological problems, having diffculty comparing dream and reality\nbtw what kind deja vu you had?\ndéjà vu is seeing, feeling things before it happen, and it happend...so if you are having déjà vécu all day...what are you seeing? or do you really know what déjà vécu means and used it because its kinda popular because of the movie déjà vu?\nor you are just really bored and made up a story :P
941689
There are many theories, including dream travel, telepathy, and reincarnation. According to scientific research, it is merely a false memory which is created in the subconscious mind. For example, one may percieve a present scene, but their subconcious will regester it as a past event. It is often linked to schizophrenia and anxiety disorders. However, people with synesthesia, out of body, or near death experiences may frequently experience Deja Vu.
138060
it's either you're claivoyant or its just a deja vu
1186522
One explanation I've heard is that the brain is storing the present into memory so quickly, we perceive it as happening in the past.\n\nThere are also the theories of parallel universe travel or having dreamt something very similar to the present.
922221
Deja Vu. It is French for already seen. I don't believe in it myself. I have heard it explained as your mind mixing memories of real past events with elements of the new experience. I am not sure if I find that really believable either.\nhttp://people.howstuffworks.com/question657.htm\n\nIn this article they note the age point. This might be a normal event in a maturing brain. I would not let the mention of epilepsy scare you because people with no epilepsy get it too.
458086
Strange though it may sound, sometimes 'deja vu's' come from the present. the feeling you have seen something or been somewhere before can eminate from the short term memory tricking itself into thinking its seen it before. in reality it was only a few seconds ago you saw it but something caused a blip, possibly a flashback or thought of something else causes an interuption. the best analogy I can give is of a car CD player going over a bump in the road, it returns to the same point where the mind left off. End result, you feel like youve been here before, but it was only a few seconds ago. A loop in time for want of a better term.
1020887
Who says it does?  Maybe when people experience what we call "déja vu" it's just a memory of a future time.
623982
Deja Vu - the feeling that this this has happened before, that you have been here before, or you have experienced this before. Most people may have had this feeling at one time or the other. Usually some incident or some similarity of the present to past events triggers this feeling. Our memories are not perfect, so sometimes things do happen which seem similar to what happened in the past, and you get the feeling of deja vu. But if you think and try to remember, you may recall that it was a different experience.
63038
Deja vu...\n\nBASEBALL!
461582
Its French.\nThe term déjà vu (French: "already seen", also called paramnesia) describes the experience of feeling that one has witnessed or experienced a new situation previously. The term was created by a French psychic researcher, Emile 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 "eerieness" or "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.\n\nThe experience of déjà vu seems to be very common; in formal studies 70% or more of the population report having experienced it at least once. References to the experience of déjà vu are also found in literature of the past, indicating it is not a new phenomenon. However, in laboratory settings, it is extremely difficult to invoke the déjà vu experience, making it a subject with few empirical studies.
847661
deja vu, is french, accepted into the american english language...literally translates (already seen).... usually means when you felt that you lived the situation once already. (or seen it coming)
946890
I had the one similar "sighting" but it was a shadow, a shadow of a man that disappeared right before my eyes.  I was not asleep nor dreaming .  I have all my senses intact.  I was 9 years old then.  And i can never forget that incident.  Up to now I too can't explain what happened.  Perhaps children have more 6th sense than adults.  As the boy in one of a blockbuster movie said: "  I can see ghosts."