Beloozerova I N, Sirota M G
Neirofiziologiia. 1986;18(4):543-5.
During locomotion on a flat surface and walking on crosspieces of a horizontal ladder the activity of 56 motor cortex neurons in the cat (5 identified cortico-spinal and 6 cortico-rubral neurons among them) was modulated in the rhythm of steps, i.e. it increased in one phase of a step and decreased in the other. The results of complication of locomotion task by the necessity of putting paws right on the support (fulcrum) while walking on the horizontal ladder were as follows: an increase of average activity of 19 neurons by 60 +/- 8% and a decrease of average activity of 19 neurons by 29 +/- 4%; growth of the modulation depth of 41 neurons (5 cortico-spinal and 6 cortico-rubral neurons) on the average by 68 +/- 19% for CS, 34 +/- 18% for CR and 36 +/- 5% for nonidentified neurons; temporary distribution of activity of 88% neurons in the step cycle while walking on the crosspieces of a horizontal ladder was that of walking on the flat surface.
在猫在平面上移动以及在水平梯子的横杆上行走时，56个运动皮层神经元（其中5个为已鉴定的皮质脊髓神经元，6个为皮质红核神经元）的活动以步幅节奏进行调制，即在步幅的一个阶段增加而在另一个阶段减少。在水平梯子上行走时因需要将爪子准确放在支撑物（支点）上而使运动任务复杂化的结果如下：19个神经元的平均活动增加了60±8%，19个神经元的平均活动减少了29±4%；41个神经元（5个皮质脊髓神经元、6个皮质红核神经元）的调制深度平均增加，皮质脊髓神经元增加了68±19%，皮质红核神经元增加了34±18%，未鉴定神经元增加了36±5%；在水平梯子横杆上行走时，88%的神经元在步幅周期中的活动时间分布与在平面上行走时相同。
