Perception is the process of attaining knowledge through interpretation of sensation. When we pay attention to any object or person, a message is conveyed to brain through spinal cord. The nerve impulses of sensation taking place in the eye, ear etc. are conveyed to the brain. The brain processes this information and understand the meaning of stimuli.
Thus, the process of perception includes: (1) Sensation towards an object. (2) Excitation of sensory organs and activity in the brain. Interpretation of object.