Locomotion refers to the movement of an organism from one place to another. It encompasses various forms of movement, including walking, running, swimming, and flying, and is essential for survival, allowing animals to find food, escape predators, and explore their environment. 

Often perceived as a brain-driven function, locomotion was historically believed to be entirely initiated and controlled by the brain. However, advances in neuroscience have shown that it is a complex and dynamic process shaped by continuous interactions between three key components of the nervous system: the brain, the spinal cord, and sensory feedback. Understanding how these systems work together is essential to grasp how we generate and adjust movement, especially in the context where one of these components is injured.