Neurophysiology of human neck and lower limb motoneurons

人类通过各种运动活动与环境互动，如说话、走路、保持平衡和进行意志运动。这些日常活动需要精确控制运动神经元控制多个肌肉来执行所需的动作。虽然看起来很简单，但平衡、姿势和自主运动是在来自下行控制信号（如大脑）和外周受体（如皮肤或肌肉受体）的信息的复杂整合之后产生的。除了这种复杂的信息整合之外，类似的人类动作可以在不同信号的不同参与下进行。一个明显的例子是自动呼吸或平衡的可能性，或者有意识地控制这些行为。

Humans interact with their environment through a variety of motor activities such as talking, walking, balancing and performing volitional movements. These daily activities require the precise control of motoneurons controlling multiple muscles to perform the desired action. Although apparently simple, balance, posture and voluntary movements are produced following complex integration of information coming from descending control signals (such as brain) and signals from peripheral receptors (such as skin or muscle receptors). In addition to this complex integration of information, similar human movements can be performed with a different involvement of different signals. An obvious example of this is the possibility to breathe or balance automatically or take conscious control over these actions.