Déjà vu

Déjà vu

Déjà vu is French for ‘already seen’. It is a feeling that the situation(or surrounding) is familiar subjectively, but unfamiliar objectively.

Almost two-thirds of individuals have experienced Déjà vu at least once in their lifetime, including blind people.

Déjà vu is a fleeting, intangible experience, making it hard to measure, and is also highly subjective.

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Déjà Vu: The Science Behind the Eerie Feeling of Familiarity

thoughtco.com

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Déjà vu can be explained in terms of our memory:

  • Single Event Familiarity: When one element is familiar but other elements are not.
Example: When you see a person you vaguely recognize(like your barber) out in the street.
  • Gestalt Familiarity: When the layout and surroundings seem familiar.

Example: A layout of a room is similar to a room you have seen before but some details are not matching.

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Déjà vu is French for ‘already seen’. It is a feeling that the situation(or surrounding) is familiar subjectively, but unfamiliar objectively.

Almost two-thirds of individuals have experienced Déjà vu at least once in their lifetime, including blind people.

Déjà vu is a fleeting, intangible experience, making it hard to measure, and is also highly subjective.

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Déjà vu can be explained in terms of our neurological activity:

  • Spontaneous Brain Activity: When a part of your brain is engaged with memory, thoughts can overlap, and one can experience a false sense of familiarity. The complex memory structures result in cross-connections.
  • Neural transmission speed: Déjà vu can be felt when the various parts of one’s brain that transmit information get disrupted, or if the information arrives at different times, like a traffic jam in the brain’s highways.

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Déjà vu: The Glitch In The Matrix

Most people have experienced a sensation where while being in a situation, event, or place, we feel as if we have already experienced the same. This sensation is called déjà vu, meaning ‘already seen’ in french.

Some say these are false memories or a past-life remembrance. Others state that it is a short circuit in our brain or some activity in the ‘rhinal cortex’ of the brain.

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Can Science Explain Deja Vu?

scientificamerican.com

Food Memory

Eating specific foods which were consumed in our early years can evoke powerful and emotional memories, lying dormant in our subconscious for decades. This is possible even if the food was first relished at an early age, which we cannot recall any memory of.

Example: Eating a certain flavour of strawberries as a child can trigger the memory or recognition of the particular taste when eaten after decades as an adult.

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Why food memories are so powerful

bbc.com

Déjà Vu

Déjà vu, French for ‘already seen’, is a feeling of having experienced something already. A feeling of being familiar with the current scenario as if it has happened to us in the same way before. According to a study, about 60 percent of the population has experienced déjà vu.

What makes déjà vu unique is that there is a conflict between the sensation and the actual awareness, a disorienting feeling that one has been tricked.

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What causes déjà vu? The quirky neuroscience behind the memory illusion

sciencefocus.com