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What is Deja Vu?

  • Writer: Ayazhan Zhaksybayeva
    Ayazhan Zhaksybayeva
  • Jan 29
  • 2 min read

Have you ever walked into a room and felt that you have been there before, even though you know you have not ? 


Study shows that 97% of people in the world experience Deja vu at least once in their life, and 67% of people experience it regularly. 


Types of Deja Vu:


Study shows that there are different types of Deja Vu : 

  • Deja Vecu 

  • Deja senti 

  • Deja visite 

  • Deja entendu 


1. Deja Vecu is the most common type of deja vu and called Deja Vecu because the feeling is that you already have. The person feels they are in a time loop or remembering a past life, often believing they know the unfolding events, conversations, or actions before they happen. Deja Vecu is also the most intense and detailed one. People who have dementia and severe stress tend to experience deja vecu. 


2. Deja senti is the feeling that you already felt. It is different from Deja Vecu. It is a phenomenon of false familiarity focusing on internal, emotional, or sensory states rather than visual scenes. Smell or sound can trigger the feeling. It is the less intensive Deja vu type. 


3. Deja visit is the feeling that you have visited this place and a cognitive familiarity. Intense feeling of familiarity with a new, unexplored geographical location or landscape. When you feel like you know your way around while not fully aware of the surroundings. Science says that it is caused mostly due to memory fragments from movies or when you subconsciously processed visual similarities. 


4. Deja entendu is the feeling that you heard the sound but cannot remember when or where you have heard it. It often occurs with music, specifically when a new song resembles a familiar tune. It somewhat resembles Deja senti. 


Why does Deja vu really occur ? 


The brain's rhinal cortex responsible for detecting familiarity may trigger a feeling of recognition without the hippocampus finding a corresponding, actual memory, creating a false sense of familiarity or a tiny delay in the processing of information in between parts of the brain. Researchers say that it is the brain doing a “ Brain fact checking “ to see if the cortex is working correctly. 


People who have problems with stress, dementia or lobe epilepsy have more frequent deja vu.


Who experiences Deja Vu ? 


  • Young adults aged 15-25 have more common Deja Vu and it decreases with age.

  • People who have high cognitive awareness and memory skills. 

  • People who experience lobe epilepsy experience it as “ Seizure Aura “. 


Deja Vu is a normal and a mystery in the human brain and mind. It shows us how memory, perception and consciousness interact. With medical education improving in the future we may be able to give a full explanation on how and why Deja Vu really occurs. 


Bibliography:



 
 
 

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