Perfil'ev S N, Cherenkova L V
Department of the Physiology of Higher Nervous Activity, Saint-Petersburg State University.
Neurosci Behav Physiol. 1993 Sep-Oct;23(5):409-18. doi: 10.1007/BF01183001.
The change in the neuronal activity of the sensorimotor area of the cerebral cortex of the cat was investigated in awake animals as a function of the level of differentiation of the components of a simultaneous heteromodal complex stimulus. Two groups of neurons in the sensorimotor cortex were distinguished on the basis of the character of this relationship and a number of other parameters. It was shown that the parameters of the reactions of all neurons recorded to the positive conditional stimulus following the consolidation of the conditioned motoric reaction are established first. Such parameters of the responses as degree of manifestation, intensity, duration, and the length of the latent period changed in the process of development. The reactions of neurons of both groups to inhibitory signals were stabilized only after the consolidation of the differentiation skill. In the process only the pattern of the discharge changed in the neurons of the first group, while in the neurons of the second group, the degree of manifestation of the response, its sign, duration, and length of the latent period could vary. Fluctuations in the level of differentiation following the development of the inhibitory conditioned reactions had an effect only on the responses of the neurons of the second group to the components of the complex.
在清醒动物中，研究了猫大脑皮质感觉运动区神经元活动的变化，该变化是同时性异模式复合刺激各成分分化水平的函数。根据这种关系的特征和其他一些参数，区分了感觉运动皮质中的两组神经元。结果表明，在条件性运动反应巩固后，记录到的所有神经元对阳性条件刺激的反应参数首先确立。反应的表现程度、强度、持续时间和潜伏期等参数在发育过程中发生变化。两组神经元对抑制性信号的反应仅在分化技能巩固后才稳定下来。在此过程中，第一组神经元仅放电模式发生变化，而第二组神经元的反应表现程度、反应符号、持续时间和潜伏期可能会有所不同。抑制性条件反应形成后分化水平的波动仅对第二组神经元对复合刺激成分的反应产生影响。
