It does not exist objectively, it exists subjectively. This is explained by why the illusion occurs.
Xiaoyu is a 17-year-old boy who is at home because of schizophrenia. Even though he was on leave at home, he did not dare to put down the book in his hand, because he knew that if he put down the book, his home would become a terrible magic cave.
Because the easy fatigue book slipped from Xiao Yu's hand, Xiao Yu looked up in horror and saw his father, turning into a monster with green faces and fangs, slowly approaching himself, yelling at him loudly: You still can't learn, do you want me to eat you?
After the frightened rain hurriedly picked up the book, there was no father's roar. Xiao Yu did not dare to look up at her father again.
Mom came over and asked him to go to dinner, and Xiaoyu walked to the table with a book. Saw Mom make a table of delicious food. When he heard his father come over, his heart began to fill with fear again and he did not dare to look at him.
"Eat, your brain will become a machine for rapid memory, this is the most magical food!" The voice is so soft, it must be Mom. Xiao Yu looked up at her mother, but found that although her mother was still the appearance of her mother, her brain had become a transparent brain, which had a delicate instrument as cumbersome as a computer, running at high speed.
Seeing the light rain here also has a very much desire to eat food, when I looked down to eat, I found that the table was full of plates of screws...
This is the description of the illusion that the schizophrenic patient Xiaoyu, after a year of hospitalization and stabilization, describes the illusion he had seen before.
Everyone must know that Xiaoyu's father cannot be a monster with green faces and fangs, and his mother's brain cannot be transparent. These are the illusions that Xiaoyu saw after he fell ill, but why did Xiaoyu see these illusions?
This kind of schizophrenia with visual hallucinations and auditory hallucinations is called delusional schizophrenia and is the most common type of schizophrenia. The onset is relatively slow, mostly in the middle of the adult age. At first, it appears to be suspicious and sensitive, and gradually develops into delusion. Delusions often have hallucinations and a combination of perceptual disorders.
This kind of perceptual comprehensive disorder is the deformation of the object seen, and the parents seen by Xiaoyu are the deformed parents seen in the mental trance. In fact, the appearance of illusions is not the most common, the most common is auditory hallucinations. The content of auditory hallucinations is related to delusions, such as the fall of a book by Xiaoyu, and the content of hallucinations is related to learning.
According to brain imaging studies, schizophrenia may be caused by impaired pathway development between the prefrontal lobe-thalamus-cerebellum, and its symptoms can be collectively referred to as "cognitive dysplasia", and patients are always unable to distinguish what they think in their minds from what is actually happening.
Mistakenly taking the imagination in the mind as reality, turning the words in the mind into hearing others talking.
Physical and psychological injuries suffered throughout the developmental stage can cause stunted growth, but the main problems occur early in life.