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Why do you get deja vu?
August 13, 2011 8:05PM
Studies have shown that déjà vu is primarily visually oriented. Basically, you see something and suddenly get that déjà vu feeling. The visually triggered Déjà vu is by far the most common occurrence
No one knows for sure, but some people think that something occured to you in the past that was somewhat similar to what recently happened, or something reminded you of something that happened in the past. There's also the possibility that you've traveled back in time and have very faint memory of what happened, and there's the part that it's merely a feeling.
It is a cognizance of experiencing a memory as it happens in the present momment, a memory that seems to mirror in close relation, something that is happening in the present.
"deja vu" is the feeling of having seen something before and it happens because your mind has seen something else that is so similar that it has a hard time telling the difference between what you are seeing now and what you saw before.
Some studies suggest déjà vu is caused when one eye records what it sees and then straight after the other eye sees it but at a different time.
Several theories imply that déjà vu is caused by the brain itself. One is that déjà vu is triggered by a neurochemical action in the brain that is not connected to any actual experience in the past. It makes sense that that feeling may be caused by a brain state that has nothing to do with memory, because at the same time of feeling familiarity, we know that the event could not have happened before.
> In 1895 Frederic W. H. Myers, an English psychiatric researcher, suggested that one hemisphere of the brain received information a split second earlier than the other half. Myers theorized that the subconscious mind registered information sooner than the conscious mind, causing the sensation of déjà vu.
> Another explanation is based on the fact that there are portions of the brain that are specialized for the past, the present, and the future. If observation from the present is mixed up with or confused with parts of the brain that process memories from the past, those perceptions will feel like they are memories, and the person will feel that they are re-living a moment stored in long-term memory: déjà vu.