Updated: Aug 5, 2021
7 February 2021,
We have all experienced that feeling of ''déjà vu'' that sensation of '' I have seen you before'' or ‘’ I feel like I’ve seen/ lived this before”. And of course, there are many explanations to that, some say that we have seen the line of our lives in the womb, some say that we have encountered that person sometime in our past life yet, mainstream scientific approaches reject the explanation of déjà vu as "precognition" or "prophecy’’.
Scientifically speaking, some scientists have attempted to bring on déjà vu using virtual reality. One study found that participants reported experiencing déjà vu when moving through the virtual reality Sims video game when one scene was purposefully created to spatially map to another.These experiments have led scientists to suspect that déjà vu is an actual memory phenomenon. We encounter a situation that is similar to an actual memory but we can’t fully recall that memory. So our brain recognizes the similarities between our current situation and one in the past. We're left with a feeling of familiarity that we can’t really place.
One study used functional Magnetic Resonance Imaging (fMRI) to scan the brains of 21 participants as they experienced a kind of lab-induced déjà vu. the areas of the brain involved in memory, like the hippocampus, weren’t really triggered as we would suspect if the feeling was linked to a false memory. Yet , the researchers found the active areas of the brain were those involved in decision making. They interpret this result to mean that déjà vu could instead be a result of our brains managing some form of conflict resolution.
déjà vu can be caused by many things such as:
A split perception is simply a theory that says when you first see something, without having full attention to it, such as when you’re driving and catch on the corner of your eye, a certain figure, Your brain can begin forming a memory of what you see even with the limited amount of information you get from a brief, incomplete glance. So, you might actually take in more than you realize.
-Minor brain circuit malfunctions:
A minor brain circuit malfunction is somewhat a brain glitch: the theory suggests that your brain ‘’glitches’’, a sort of mix-up when the part of your brain that tracks present events and the part of your brain that recalls memories are both active.
Many scientists believe that the déjà vu is mainly related to how you recall your past memories, as it can happen in response to an event that resembles something you’ve experienced but don’t remember. Maybe it happened in childhood, or you can’t recall it for some other reason.
Now, how about you? Have you experienced this feeling before?