Modern cinematography relies heavily on this. A director might use "cool" blue lighting in a hospital scene. Through double perception, the viewer sees the blue light (literal) but feels a sense of sterile isolation or sadness (symbolic). We are perceiving the physical environment and the emotional subtext at the exact same moment. The Psychological Weight
At its simplest level, vision is a biological process—photons hitting the retina and sending electrical signals to the brain. But humans rarely experience the world as a flat, objective stream of data. Instead, we operate through : the simultaneous ability to see what an object is while immediately understanding what it means or how it feels . Double Perception