Degtiarenko A M, Baev K V, Zavadskaia T V
Neirofiziologiia. 1990;22(3):300-9.
Rearrangement of the scratching generator activity evoked by phasic electrical stimulation of different descending systems has been investigated on decerebrated immobilized cats. This rearrangement heavily depends on the stimulation phase. Maximal increase of the scratching cycle duration by electrical stimulation of Deiters' nucleus, red nucleus and pyramidal tract takes place in the first half of an aiming phase. The electrical stimulation of structures mentioned above does not practically change duration of the scratching cycle in the second half of the aiming phase and at the beginning of the scratching phase. A maximal increase of the scratching cycle duration by electrical stimulation of reticular gigantocellular nucleus occurs in the second half of the aiming phase. The electrical activation of descending pathways during the aiming phase increases intensity of this phase and decreases intensity of the scratching phase. The electrical activation of descending pathways during the scratching phase increases its intensity and does not change practically the intensity of the aiming phase. Possible principles of the suprasegmental correction of the scratching generator activity are discussed.
在去大脑的固定猫身上，研究了不同下行系统的相位电刺激所诱发的搔抓发生器活动的重新排列。这种重新排列在很大程度上取决于刺激相位。通过刺激Deiters核、红核和锥体束，搔抓周期持续时间的最大增加发生在瞄准阶段的前半部分。上述结构的电刺激在瞄准阶段的后半部分和搔抓阶段开始时实际上不会改变搔抓周期的持续时间。通过刺激网状巨细胞核，搔抓周期持续时间的最大增加发生在瞄准阶段的后半部分。瞄准阶段下行通路的电激活增加了该阶段的强度，并降低了搔抓阶段的强度。搔抓阶段下行通路的电激活增加了其强度，并且实际上没有改变瞄准阶段的强度。文中讨论了搔抓发生器活动的节段上校正的可能原理。
