In this tribute to Reggie Edgerton, I briefly review the spinal mechanisms that coordinate locomotion and the interaction between the different sensory mechanisms that help coordinate the locomotor movements and the central locomotor network. The step cycle has four distinct parts, the support phase, the lift off, the flexion phase and the most complex, the touch down, when the limb makes a smooth contact with ground again. Each of these phases is affected by different sensory mechanisms, which interact with the central network (CPG) generating the basic movements with its four components. Conversely, the CPG also gates the sensory reflex pathways, so that they are active only in a given phase of the step cycle, or even produces opposite effects in different parts of the step cycle. These different examples from mammals are most likely important also to consider for human locomotion, and in particular in patients with spinal cord injury, partial or complete.

中文翻译：

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运动的执行 - 脊柱问题

在向 Reggie Edgerton 致敬时，我简要回顾了协调运动的脊柱机制以及有助于协调运动和中枢运动网络的不同感觉机制之间的相互作用。踏步周期有四个不同的部分，支撑阶段、抬离阶段、屈曲阶段和最复杂的着地阶段，此时肢体再次与地面平滑接触。这些阶段中的每一个都受到不同感觉机制的影响，这些机制与中央网络 (CPG) 相互作用，产生具有四个组成部分的基本运动。相反，CPG 还控制感觉反射通路，因此它们仅在步周期的给定阶段处于活动状态，甚至在步周期的不同部分产生相反的效果。