To fully understand this phenomenon, we must first understand the reasons for the emergence of perceptual integrity: according to the theory of perceptual growth model, a perceptual unit composed of two or more representations from different sensory systems is a deeper, three-dimensional, more closely related and very complex network structure. The core structure of perception unit is formed by connecting each represented point through neural pathway. Therefore, whenever the excited energy reaches the perceptual unit, it will spread from the light spot to the core structure of the whole perceptual unit, showing the integrity, understanding and constancy of perception.

Second, we should understand "active plastic surgery". According to the theory of perceptual growth model, "no matter what objective stimulus information enters our knowledge structure, even if its stimulus situation is inaccurate, it will be shaped by our perceptual units or groups of perceptual units, which will be reflected in a clear form." This is my revised "correlation theorem", and I think it should be called "active shaping" more appropriately.

The phenomenon of "active plastic surgery" covers all aspects of psychological phenomena, and the phenomenon you mentioned is one of them. When the excited energy enters this familiar brain area (some incoherent words) in your brain, it will automatically spread and pass to all the perceptual units of familiar words and sentences that others are used to, so you will automatically identify his commonly used sentences.

Due to the limitation of space, I'm afraid the explanation is not clear enough. If you are interested, please visit Baidu → Library → Enter the title "A New Interpretation of Perceptual Growth Model of Psychological Phenomenon" → Perception unit knowledge starts from page 246, and active plastic surgery knowledge is on page 3 10.