[Factors determining extinction resistance of intracranial self-stimulation---frequency of reinforcement and time factors after the last reinforcement].
D000818:Animals; D001921:Brain / Q000502:physiology*; D003216:Conditioning, Operant; D004558:Electric Stimulation; D005108:Extinction, Psychological; D007031:Hypothalamus / Q000502:physiology; D007858:Learning; D051381:Rats; D012054:Reinforcement, Psychology; D012653:Self Stimulation; D013997:Time Factors