Motor control

The process by which the nervous system coordinates muscles and limbs to produce purposeful, accurate movement. Motor control involves planning movements, executing them, and using sensory feedback to make real-time corrections. Impairments in motor control — caused by conditions such as cerebral palsy, stroke, multiple sclerosis, Parkinson's disease, or spinal cord injury — affect the ability to interact with standard interfaces, driving the need for adaptive input devices, ability-based design, and alternative interaction modalities that accommodate tremor, spasticity, reduced coordination, or limited range of motion.