[Characteristics of the systemic organization of the cortical neurons in various forms of the manifestation of the conditioned reflex to time].

Conditioned food-procuring reflex to time (2 minutes interval) was elaborated in cats. By the method of cross-correlative analysis the combined neurones activity in microareas and between microareas of the motor cortex was compared at various forms of conditioned reflex manifestation. Three types of reactions were considered: A--decrease of respiratory movements amplitude towards the end of the studied interval between reinforcement; B--increase of the amplitude; C--food-procuring paw movement a few seconds before the reinforcement. All three forms of the conditioned reflex to time differed from each other by the level of increase of functional connections number by the moment of the reinforcing stimulus action, and also to a greater extent by the frequency of occurrence of intervals in which the sum of neuronal connections in all simultaneously recorded microareas was greater in the "active" phase than in the "inactive" one. These parameters did not always correlate with the change of impulses frequency of separate neurones which occurred considerably more seldom. All the observed changes were manifest significantly more often when the animals performed the instrumental food-procuring movement than during changes of only the respiratory movements amplitude.