Human Perception: An Intimate Look Into The Most Intriguing Aspect of Modern Psychology. It determines what we see, what we do, what we feel. It controls our emotions, our thoughts, and our conscience. What is this remarkable element of the human mind? It is called perception. Perception as defined in the Merrian- Webster Dictionary as the following- 1 a : awareness of the elements of environment through physical sensation b: Physical sensation interpreted in the light of experience 2 a : quick, acute, and intuitive cognition : APPRECIATION b : capa