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How to explain the sense of sight that you once knew? Maybe it ’s just the brain that “pumped the wind”

How to explain the sense of sight that you once knew? Maybe it ’s just the brain that “pumped the wind”

Mysterious Brain


Is there a moment when you feel the scene in front of you seems to have happened. You met a stranger, but suddenly thought "this sister I have seen." Or after reading this, you shot the case and said: "I dreamed of this paragraph!" "This situation, this scene seems to "I have experienced it once in the past" is an illusion that often appears in daily life. In psychology, we call this phenomenon ,a sense of both sight.

Is it memory failure or memory error?

Scientists have tried to reproduce the phenomenon of sight in the laboratory. In a 2006 study, a memory team at the University of Leeds, UK, first created a memory for subjects under hypnosis, such as playing a game or seeing a specific color word, and then the researchers respectively It is recommended that subjects in different groups forget or remember this memory. Later, when the group of subjects remembered saw the game or the words again, they all had a sense of sight.

Some scientists have tried to use virtual reality technology to create a sense of sight. A study transformed a scene in the Sims game into another look with the same layout, such as replacing all the shrubs in a virtual garden scene with garbage dumps, so the garden became a layout The same junkyard. Passing this scene, the players tested said they had a sense of sight.

Based on these experiments, scientists began to think that both visual perception is actually a memory phenomenon: we entered a scene very similar to memory, but could not find the corresponding exact memory. The brain recognizes the similarities between the current scene and the memory, leaving us with an inexplicable sense of familiarity.


Scientists are not satisfied with the above explanation. They have proposed many theories to try to give specific reasons for memory failure. Some of these theories believe that the sense of sight is like a short circuit in the brain that leads to long-term and short-term memory, so new information does not stay in the short-term memory repository first, but directly leads to long-term memory. There are also some theories that this is due to the fact that in the absence of relevant memory support, the areas of the brain responsible for sending familiar sensory signals-the peri-nasal cortex and entorhinal cortex are activated by mistake.

Another theory holds that both visual perception and "wrong memory" are related. This memory seems to be true, but it is actually false. This can lead to a feeling that you cannot distinguish whether something happened in reality or in a dream. However, subsequent studies quickly refuted this theory.

For example, one study used functional magnetic resonance imaging (fMRI) to scan the brains of subjects who were experiencing both visual perception. If both visual perception is related to incorrect memory, then areas of the brain related to memory, such as the hippocampus, should be activated. However, the scan found that it was the brain area that was involved in decision-making instead. Researchers believe this is because the brain is trying to resolve conflicts: it is rummaging through memories of the past to see if what we have experienced has actually happened.

Is there a neurological disorder in the temporal lobe of the brain?

The extreme case of both visual perception is temporal lobe epilepsy, which is a chronic disorder of the nervous system that randomly occurs in the temporal lobe of the brain, often manifested as focal conscious epilepsy. When this happens, people will continue to maintain their basic consciousness, but they will produce abnormal feelings similar to the sense of sight. Some scientists believe that both visual perception is a mild version of this neurological disorder.

There are also theories that this strange feeling actually gives a glimpse into the future. Some people who have a sense of sight show that they seem to have a sense of predicting the future. But this theory has no scientific basis. According to research, there is no difference between the success rate predicted by these people and blind guessing.

Should we worry about both visual perception? As long as it has nothing to do with epilepsy, the researchers believe that this feeling is not harmful. In fact, some scientists believe that both visual perception may be beneficial. If it does occur because the brain is rearranging memories that have been misplaced, this weird feeling may indicate that our memories are working well. This theory also explains why young people aged 15-25 are more likely to develop a sense of sight. British scientists are studying a young man who has a long history of visual perception. He frequently feels that he is re-experiencing the past experience, and the visual perception produced each time often lasts for a minute. He felt like he was trapped in the movie "The Illusion of Death".

All in all, if you only occasionally have a short-term sense of sight, and will not affect daily life, then there is nothing to worry about. You can match the episode "Deja vu" with "Initial D" and enjoy this strange illusion.

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