[Answer to Dr. Kato's article (Part II)].
Takigawa
M
M
Dept. of Neuropsychiatry, Faculty of Medicine, Kagoshima University.
D000818:Animals; D003216:Conditioning, Operant; D006801:Humans; D012054:Reinforcement, Psychology; D012653:Self Stimulation; D019966:Substance-Related Disorders / Q000523:psychology*