Beloozerova I N, Sirota M G
Neirofiziologiia. 1986;18(4):546-9.
During locomotion on flat surface and while walking with stepping over obstacles the activity of 68 motor cortex neurons in cat (there were 12 pyramidal tract neurons (PTN) 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 to swing of the limbs over obstacles were as follows: an increase of average activity of 34 neurons by 75 +/- 15% and a decrease of the activity of 20 neurons by 30 +/- 4%; growth of modulation depth of 40 neurons (9 PTN) by 35 +/- 5% on the average for non-PTN and by 67 +/- 32% on the average for PTN; temporary distribution of the activity of 81 neurons in the step cycle while walking with stepping over obstacles was that of walking on the flat surface.
在猫在平坦表面上移动以及跨越障碍物行走时，68个运动皮层神经元（其中有12个锥体束神经元，PTN）的活动以步幅节奏受到调制，即在步幅的一个阶段增加而在另一个阶段减少。因肢体需要在障碍物上摆动而使运动任务复杂化的结果如下：34个神经元的平均活动增加了75±15%，20个神经元的活动减少了30±4%；40个神经元（9个PTN）的调制深度平均非PTN增加了35±5%，PTN平均增加了67±32%；在跨越障碍物行走时，81个神经元在步周期中的活动时间分布与在平坦表面行走时相同。
