Last night we friends went to a restaurant which was new to me. We ordered chicken fried rice and some barbeque items. When waiter brought those things, suddenly I felt that this thing happened before too. We visited this restaurant before and ordered the same items. But that was not actually happened before. Then why I felt that ? This is not the first time. I felt that before too. This feeling is called "Deja Vu".

What is Deja Vu?

Having a feeling of "already seen" for some place or situation is called Deja Vu. Deja Vu is a french word who's English meaning is "Already Seen". 60-70% people of the world experience Deja Vu for at least once in their life time.

Some people think that this is a mental illness. This is not a mental illness but a mental state which is so powerful that it makes you believe that this place or situation is already seen by you. Different people have different theories about Deja Vu.

Deja Vu in Hinduism

In hinduism people believe to have more than one life. They believe to have 7 lives. They called it "Punar Janam". So they believe that Deja Vu is nothing but a memory from our previous life.

Deja Vu in Spiritualism

Some people who believe in Spiritualism say that when we were spirits before birth we know that what will happen to us in the world. He knew our future from birth to death. When we were ready to born, angels of oblivion removed our ability to see the future. After we are born we are not able to see our future any more. Sometimes we just remember that thing. That's why we feel Deja Vu. There is a movie called "Mr. Nobody" which explained this theory in better way.

Deja Vu for Some Scientists

Some scientists believe that Deja Vu is a connection between you here and you in other universe. Basically the apply the concept of multiverse. They believe that when you experience Deja Vu then actually you have seen that place or situation already but in other universe.

Deja Vu for Dreams

Some people think that when you experience Deja Vu then actually you have seen that place or situation already but in dreams. This theory is the mose realistic from all above but not true. According to this theory when you think about something before sleep then its 60% chance that you will see the same thing in dreams too.

For example when you think to visit s place before sleep then its 60% chance that you will see that place in dream and when you visit that place in real life then you experience Deja Vu.

Psychology Behind Deja Vu

The real reason of Deja Vu was given by Psychology. Which says that Deja Vu occurs due to memory miss match. To understand what is memory miss match first we should understand how our memory works. Actually we have two parts of our memory.

• Short Term Memory

• Long Term Memory

Short Term Memory:- The part of memory in which information is stored for short term and then transfers to long term memory. STM has a very limited capacity to store information.

Long Term Memory:- Unlike STM, Long Term Memory has unlimited capacity which stores the information of our entire life. We can recall any memory from LTM by just focusing and remembering a particular memory.

In normal situation, information transfers from sensory memory to short term memory band then to long term memory.

In Deja Vu Situation: Deja Vu occurs due to memory miss match. Memory miss match is a disconnection between STM and LTM. In Deja Vu information from sensory memory goes directly to Long Term Memory bypassing STM.

As all information in LTM went through STM but in Deja Vu information goes directly from sensory to long term that's why STM make us believe that this thing should be happened before too that's why this information is store in LTM.

This is the real reason of Deja Vu. Although we wouldn't seen anything before but it's STM which makes us believe that it is already seen.

And that's the end of today's blog. Hope you liked it. If you really like it then:

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