[Dynamics of formation of water and food instrumental conditioned reflexes in freely moving dogs].

The dynamics of food and water conditioning was studied in freely moving dogs choosing the reinforcement. The dog's behaviour at any given moment was determined by the correlations of the excitability of the structures of the corresponding vital unconditioned reflexes. A directed change in the excitability of the structures of the unconditioned (alimentary and water) reflexes by raising or lowering the animal's excitability (hunger, satiation, thirst) resulted in a change of the animal's behaviour and its motivation. Goal directed movements of the animals are based on activation of backward conditioned connections.