Deja Vu is one of the most intriguing yet mysterious phenomena. We may have experienced an event in our lives that feels like reliving your past. Or the situation seems too familiar. But we don’t remember it happening in our past.
You may be visiting a place for the first time but your mind keeps telling you that you have been there before. This unshakable feeling of familiarity is Deja Vu. It makes you wonder that something is amiss.
“Deja Vu” term is French in origin and it literally means “already seen”. A french researcher and philosopher coined this term in 1876. It’s a feeling that the event happening now has already happened in past. Although it never occurred before.
Surprisingly, Deja Vu is not limited to major events only. It can occur even when a person is doing ordinary chores. For example, you are doing groceries and suddenly there is a flashback where you see yourself exactly in the same place doing the same action.
Scientists presented multiple theories to explain Deja Vu. But none of these theories could be accepted as the final verdict. Some of the theories are:
1: Memory Mismatch:
According to some scientists, “Deja Vu” in reality is “Memory Mismatch”. Our brain may associates the past with the present. When you are in a particular situation, it might be possible for your brain to bring a similar place or situation from the past and connect it with the current circumstances. This will lead you to believe that you have done this before even if it’s a new experience for you.
This memory mismatch occurs due to malfunction in neural pathways of the brain. There is some sort of hindrance in our brain signals which will lead to changed perceptions causing Deja Vu.
Some people believe that it happens when new information goes directly to long-term memory bank instead of short-term memory storage. It leads us to believe that this event had already occurred.
Another theory is that memory mismatch occurs due to the malfunctioning of a specific brain part known as “cortex”. Cortex triggers the brain and Deja Vu happens.
2: False Memories:
Some scientists believe that Deja Vu occurs due to “False Memories”. The memories feel real but are false ones created by our brains. It’s similar to the situation when a person cannot differentiate between dream and reality. It is a form of dissociation from reality.
False memory is also considered as a symptom of various psychological conditions such as Alzheimer’s Disease, Epilepsy, Obsessive-Compulsive Disorder (OCD), Dementia, etc.
False Memory Syndrome is also observed in people who have gone through trauma specifically in childhood. They are unable to remember the exact details. And tries to fill the gap by themselves which leads to false memories.
According to this theory, our brain stores memories in three-dimensional form. These memories consist of multiple elements. If you came across one element, such as a specific smell or sound, then it reminds you of another previous memory where the same element was present.
For example, you are experiencing Deja Vu upon seeing a rose in a flower shop. It’s happening because you may have the same rose in the backyard of your childhood home. Your brain connected both memories making you relive the moment.
Sometimes you may not recognize the memory. This happens when the stimulus is a part of the subconscious and is hidden from the conscious part of the brain.
Reincarnation is the process of rebirth. There is an ongoing debate that whether a person is reborn in this world or not. Some religions believe in this concept but most scientists consider it a myth.
According to this theory, Deja Vu is a memory of the previous life of an individual. The person might have faced this situation in his past life and now is facing it again in this life.
This theory was one of the earliest theories but is not widely accepted due to the lack of scientific proofs.
5: Alternate Universes:
This theory suggests that Deja Vu is connected to alternate universes. According to this theory, multiple parallel realities exist other than our world. These universes are invisible to us. But our counterparts are living their lives in these universes.
All the alternate universes have different frequencies. But these frequencies could match momentarily when the same action happens simultaneously. For example, you experience Deja Vu while driving a car then it means that your counterpart is driving the car in the same way in an alternate universe.
This theory is difficult to believe as no scientific explanation is present about the existence of alternate realities.
Another theory is Deja Vu is reliving a dream. The situation you are facing was once seen in a dream. For example, you are riding a bike on an open road and it all seems too familiar. Maybe you saw a dream where you were doing exactly the same thing. It suggests that Deja Vu merely is a recollection of our dreams.
Some people believe that Deja Vu associates with precognitive dreams. It means that the dream already told you about an event that will happen in the future. Hence, it felt like reliving the moment. But there is not much evidence to support this claim.
The idea of precognitive dreams is difficult to believe. But the association of Deja Vu with dreams cannot be denied.
7: Time Glitch:
According to the Glitch theory, Deja Vu happens due to a momentary breakdown in time. According to Einstein, there is no such thing as time. Human beings created it for their own ease.
Glitch theory believes that time is just an illusion and Deja Vu is a time break. If time doesn’t exist then we are living past, present and future at the same time. When Deja Vu occurs, we are living all states simultaneously. At that moment, we are free from the shackles of time.
Some people believe that UFOs can also be seen in a Deja Vu moment as a person is experiencing a higher level of consciousness at that time. Changes in Earth’s foundation also happens during such moments. This theory is exciting but far-fetched and difficult to prove.
8: Brain Damage:
Deja Vu occurs due to brain damage. It is a common symptom of various brain disorders. Both healthy and unhealthy individuals can experience Deja Vu. But it’s problematic when it happens more often. A person suffering from brain damage may have difficulty in differentiating Deja Vu and reality. Such people should seek immediate medical attention.