A scene already seen the phenomenon of deja vu
Imagine that, right now, while you read this, I understood the feeling clear, clean, precise, having lived this moment. Usually, this kind of situation, one wonders if you have previously dreamed of the scene is analyzed to see if the situation is similar to something in another time, but then they end up realizing that all the details of the scene can be traced back a single moment that you have the feeling of having lived and as the scene fades, we remain perplexed and we wonder about it, knowing that our perception does not correspond to any actual memory. This situation is due to the phenomenon known since ancient times and defined for the first time only in 1876 with the term "deja vu" (already seen) for many years the world of neuroscience, psychology and psychiatry has sought to investigate and explain this phenomenon and have been regularly produced various theories and explanations of "deja vu" that has still to be of interest to ancient and present-day philosophers, writers and poets. The deja-vu is a mystery in many of which we experience in life, but this experience does not occur only in the form of "already seen", (so that it appears to be present in the blind), but also as an "already experienced" you touch an object, you will hear a sound or phrase, you can enjoy a taste or an odor is perceived and the impression is that this has already happened. Alan Brown, a psychologist at Southern Methodist University (Dallas) and author of The Déjà vu Experience (Psycologie Press) reports that the phenomenon does not occur in children because it takes a certain development in the brain, it begins to appear in adolescents and in adults, especially when they are tired and stressed. A survey on the phenomenon of déjà vu, made in Italy by the "From Dusk Till Dawn" reveals that 92% of people claim to have had an experience like that, but not everyone was pleased. For 67% of the sample are the physical locations to stimulate the onset of deja vu. Along roads, enter premises, cross streets of foreign cities, causing the sensation of having already lived the experience. Far more rare are the meeting with a person and the feeling of an emotion. 58% of the trigger is determined by a feeling or set of circumstances. It is not always enough smell, a picture or listening to a song. 68% of people think the deja vu is a paranormal phenomenon, linked to memories of past lives. For the remainder of respondents, however, only a trick of memory. Experience of déjà vu is accompanied by a strong sense of familiarity and a sense of strangeness and mystery. 43% of respondents said they felt a sensation of pleasure, while 41% have remained troubled. One of the first scientific explanation of this fascinating phenomenon, dating back to 1844, when the English physician Arthur Ladbroke Wigan advanced the hypothesis that the brain, because of its symmetrical, like other organs doubles, such as the lungs or kidneys, may sometimes received the same stimuli in the form of out of phase due to lack of synchronization of the cerebral hemispheres, one of which unconsciously perceive the scene before the other, so that the second would consider it as memory of perception in action. Since then, there are many assumptions made, up to the present day, a new study led by Nobel Laureate in Medicine (in 1987) Susumu Tonegawa (Massachusetts Institute of Technology in Boston and published in the journal Science), the results seem suggest that the basis of deja-vu there is a mnemonic mechanism specifically designed to make us distinguish places and situations are similar but not identical with each other in an area of \u200b\u200bthe brain, specifically in a region of the hippocampus creates a sort of "photographic print 'of each site visited, useful to recognize differences between similar sites on the fly and immediately know where we are. If this mechanism is to distinguish places similar to 'enter into confusion, it is assumed, there is a feeling of having been in a really new to us. The neural mechanism identified involves the dentate gyrus, a subregion of the hippocampus in memory officer, and acting "quickly recognizing and amplifying the differences, however small, that make each place unique."
The search results appear to be very interesting not only because it can help to explain the phenomenon of "deja vu", but mostly because they seem to offer new and interesting ideas on episodic memory and could be used to develop targeted therapies for people with problems learning or behavioral disorders as well that for those elderly people who experience confusion, disorientation and dementia.
For the rest, it must be said that the phenomenon of deja vu is not sufficient to explain the more frequent repetition of policy scenarios is not satisfactory, this, unfortunately, is a phenomenon that affects our country and not our head!
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