In spinal cord injuries, the axons that run along the corticospinal tract are severed so that the lower motor neurons, below the site of injury, are disconnected from the brain.

• 脊髓损伤后，沿皮质脊髓的轴突严重受损，从而导致位于损伤部位的下运动神经元与大脑失去有效功能链接。