Have you ever experienced a moment and felt a strange sense that it had happened before? Even though you know the situation is entirely new, it feels familiar. This feeling is known as déjà vu, a French term which translates to “already seen”.
Déjà vu the most fascinating, yet mysterious human experiences. For a moment, the brain creates a powerful illusion of familiarity, making the present feel like a dream or a memory. This phenomenon is still heavily debated among psychologists and neuroscientists because there is no medical condition associated with Déjà vu.
Approximately 60-70% of people will experience déjà vu at least once in their lifetime, making it surprisingly a common phenomenon.
Young people experience déjà vu the most, especially by age 15-25 years old. Interestingly, after 25, déjà vu decreases in adults.
Since memory often declines with age, this could indicate that déjà vu is not a memory problem after all, but rather a sign of the brain accurately detecting a false feeling of familiarity.
Déjà vu could occur when a current situation closely resembles a past experience, without triggering all the parts of the brain associated with that memory. The brain may fail to consciously recall the original memory, yet it still recognizes the experience as familiar, making the feeling seem vague rather than tied to a specific event.
Déjà Vu is often experienced by individuals with epilepsy.
During a seizure, a person may temporarily lose control of their thoughts, movements, or awareness
Some scientists propose that déjà vu is caused by a momentary surge of activity in the temporal lobe that stops before developing into a full seizure.
Although scientists have yet to uncover the exact cause of déjà vu, it is a completely normal and generally harmless part of human cognition. Even though the feeling may be strange or unsettling, there is no need to be alarmed. Most people will experience déjà vu at least once in their lifetime.
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