Amyotrophic lateral sclerosis(ALS)) is one of the motor neural diseases, which selectively affects motor neurons in the anterior horn of spinal-cord, and the motor nuclei of brainstem and the pyramidal cells in the motor cortex of brain.

• 肌萎缩侧索硬化症(Amyotrophic lateral sclerosis)属运动神经元病的一种,该病选择性损害脊髓前角运动神经细胞、脑干颅神经运动神经核细胞、以及大脑运动皮质锥体细胞。