title: Spinal and supraspinal factors in voluntary movement.
mesh_terms: D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D001132:Arm; D004576:Electromyography; D006801:Humans; D009044:Motor Cortex / Q000502:physiology*; D009046:Motor Neurons / Q000502:physiology; D009068:Movement; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology; D009475:Neurons, Afferent / Q000502:physiology; D005082:Physical Exertion; D012018:Reflex; D013116:Spinal Cord / Q000502:physiology*