Have you ever had a strange feeling when you came across someone and just found out you've seen them before? Even think that you know what might happen in the future. This strange sensation is known as deja vu.
Deja vu has literally been seen, quoting Wikipedia, is a phenomenon of a strong sensation that an event or experience that is currently experienced has been experienced in the past.
Years ago, as reported by Medical News Today, a freshman at college sat down to watch an animated series with his friends at night. By the time the first episode begins, he has a strong and extraordinary feeling that he has seen all before.
However, this new student knows for sure that this is his first experience, and he has never heard the show in front of friends who showed him.
What he experienced at the time was something that was at least anecdotal, many people experiencing some things in their lifetime such as déjà vu or mysterious feelings, that something new is unexpectedly known.
Some researchers have been interested in this phenomenon, such as Anne Cleary, of Colorado State University in Fort Collins, with former graduate student Alexander Claxton,
He has paid special attention to the brain mechanics of this experience over the past few years, and recently he has extended his project to answering the question: are the feelings of hunch that are often associated with déjà vu have a real basis?
The phenomenon of frustration withdrawal
In their new study, Cleary and Cox induce deja vu experience in study participants to test for signs and to see if the feelings are consistent with the actual situation.
In other words, researchers want to see if people with déjà vu experience can really predict what will happen in the future, or whether the sensation is just a trick of the mind.
To encourage déjà vu, Cleary used a strategy that she successfully tested in a previous study.
In 2012, he argues that the "already seen" feeling is a phenomenon related to memory, similar to the sensation of words - just as when we have the word on the tip of our tongue. However, we may not be able to remember it, despite the fact that we know it.
Cleary found that when we experience déjà vu, it could be because the context reminds us of something we have seen or experienced in real life but which we can not remember correctly.
Thus, we may feel that we have been to the same place before, it reminds us of a place that has been seen from the train window, but what we do not realize we have seen before.
"We can not consciously remember the previous scene, but our brains recognize the similarities. The information comes as a disturbing feeling that we have faced before, but we can not know when or why, "Cleary explained.
Deja vu and memories such as "on the tip of the tongue" are known as metamemory phenomena: when we know that we remember, or that we have to remember something.
"My working hypothesis is that deja vu is a familiar manifestation of something. You have intimacy in situations when you feel you should not have them, and that's why it's so obvious, "Anne Cleary explained.
Deja vu and hunch
In their latest study, Cleary and Cox asked participants who experienced deja vu to explore a 3-dimensional virtual landscape.
The strategy is simple: landscapes are mapped the same way but look very different, sometimes the participants see the junkyard scene, while at other times they see the protected park.
In any case, the movement through the scene stops before realizing it. Therefore, all participants felt they had seen a particular scene because they had been, but in a completely different form.
Then, the researchers tested whether participants with deja vu who thought could predict the future were actually able to do it right, or whether they were being cheated by their brains.
Such mind tricks, Cleary explains, will be explained by certain memory theories, which argue that we keep memories so we can learn to predict the future. This enables us to ensure that we can survive and live the future.
The researchers saw that about half of the participants who reported deja vu also said that they had the sensation of omens. But the possibility to choose the right turn. Deja vu is no more powerful than the possibility of choosing the wrong direction.
In short, perhaps we think we can predict what will happen in the future in the experience of deja vu, that impression remains invisible in reality.
Right now, Cleary leads an advanced experiment that focuses on the feeling that you only know what should happen in the future.
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