[Activity of Retrosplenial Neurons during the First Days and after a Week Following the Learning of the Operant Food-Acquisition Task].

Activity of single neurons in the retrosplenial cortex of rats during realization of the operant food-acquisition behavior was recorded. In the first group of rats the recordings were made in the first six days after learning of the task and in the second group--following a week of a rest after learning. There were no significant differences in proportion of neurons specialized in relation to the learned behavior; however in the first group 40% of these cells had specific activations only in 80-90%, but not in all (100%) realizations of their specific behavioral acts, while in the second group there were much less relative numbers (4%) of such cells. All neurons with not-100% activations on the early stages after the learning were specialized in relation to acts of approaching and pressing the pedal that rats acquired on the last session of learning. It could be supposed that during the first stages of consolidation of the operant skill some variable set of retrosplenial cortex neurons specialized to new behavioral acts can be involved.