Sensation and perception are closely related processes where sensation involves sensory input about the physical world and perception involves the brain's organization and interpretation of these sens...Sensation and perception are closely related processes where sensation involves sensory input about the physical world and perception involves the brain's organization and interpretation of these sensations. Perception can vary among individuals due to differences in learning, memory, emotions, and expectations. This module explores the distinction between these processes, discusses how sensory information is processed by the nervous system, and introduces Gestalt theory.