Technical solution of the problem of investigation of instrumental conditioned reflexes with intragastric reinforcement.
D000818:Animals; D001522:Behavior, Animal; D003214:Conditioning, Classical; D003216:Conditioning, Operant; D004750:Enteral Nutrition; D004864:Equipment and Supplies; D005247:Feeding Behavior; D051381:Rats; D012054:Reinforcement, Psychology