what causes dejavu?

Answer 1

I'm sick of that banner ad.

Answer 2

I don't know. I wonder if the mind, being so imaginative, has many different dreams, most of which we don't remember. When we experience something that we may have experienced in a dream, we could get a feeling of deja vu.

I have experienced deja vu when having a conversation with someone. It hit me about 5 sentences into the conversation. I could have told you what the conversation was going to be for the next 15 minutes, verbatim before it happened. Strange, but true.

Not a believer in ESP, but if I was, then I would say that you would be more apt to read someone's mind the closer your brain patterns matched another person. Since, the best match for your brain patterns is yourself, then you should be able to read your own mind, the trick is how you get past the temporal issue of reading your future thoughts... But it is ESP which fits under the miracle exemption clause, just like the super heroes in comic books.

Answer 3

The 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. While it has been extremely difficult to invoke the déjà vu experience in laboratory settings, therefore making it a subject of few empirical studies, recently researchers have found ways to recreate this sensation using hypnosis.

In recent years, déjà vu has been subjected to serious psychological and neurophysiological research. The most likely candidate for explanation is that déjà vu is not an act of "precognition" or "prophecy" but is actually an anomaly of memory; it is the impression that an experience is "being recalled" which is false.[citation needed] This is substantiated to an extent by the fact that in most cases the sense of "recollection" at the time is strong, but any circumstances of the "previous" experience (when, where and how the earlier experience occurred) are quite uncertain. Likewise, as time passes, subjects can exhibit a strong recollection of having the "unsettling" experience of déjà vu itself, but little to no recollection of the specifics of the event(s) or circumstances they were "remembering" when they had the déjà vu experience, and in particular, this may result from an overlap between the neurological systems responsible for short-term memory (events which are perceived as being in the present) and those responsible for long-term memory (events which are perceived as being in the past). However there is a lot of anecdotal evidence that déjà vu is at least sometimes associated with genuine precognition, which the memory anomaly theory does not account for.

Answer 4

just a theory. the nerve signals from one eye are faster than from the other. the image forms quicker. then within ms the signals arrive from the nerves at the other eye. the brain reacts as if he has already seen that image before. but the timing between the 2 is so short that it doesn't actually know the time. this gives the person a diffuse feeling of "that happened before"

Answer 5

Hi. Didn't I answer this already?









Just kidding. The feeling you get when some event takes place which you cannot recall, but which seems as though the event happened before. Usually a mind related event, not magic.

Answer 6

Its thougt to be neurons misfiring twice instead of once, relaying information in the mind twice rather that once when you first experience something.

Answer 7

Denzel Washington, of course.