Perception came from Latin word perception, it is the organization, identification, and interpretation of sensory information in order to t describe the environment. All the perception is related to nervous system, which stimulates from physical and chemical sense organs.
In general perception all depends on the nervous system, but still, some actions are happening out of awareness. Perception is the way you accept things. There is some illustration, which shows that some people might see one thing compare to others who can see totally different things. Sometimes it makes people think totally in another way. Perception is just illusion or just dreams