I have read a sentence for a long time and find it strange. What happened? Look at it and say it's a dual personality. . . I was scared. . Is it true?/You don't say. If it is.

Don't look at other people's answers. . It's called gestalt collapse. It is normal. By default, neurons in the brain regard what they have seen for a long time as imaginary things. For example, treating a cloud or a stain on a wall as a human face means that "facial" neurons in the brain react and unconsciously recognize it as a human face. In addition, there are Chinese character neurons similar to facial neurons in the brain. If you look at a Chinese character for a long time, Chinese character neurons will be tired, which will affect the sensory function. At this time, people will also have doubts about familiar people, feel different, and even become strangers. This is the gestalt collapse.