03-06-08 Psych 115 Lec 18 - Psych 115 Lecture 18 Drug...

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03-06-08 Psych 115 Lecture 18 Drug Addiction Characteristics: The organism will repeatedly administered the drug There will a tendency to increase the dose of the drug over a repeated administration period, The organism will displace physical withdrawal symptoms, when the drugs is no longer administer At the termination of the withdrawal period, organism return to normal, but if the organism resume drug intake, they are still considered as drug addict. Organism mostly used is monkey. They’re implanted into their jugular veins, with a tube. Direct access of drugs to the circulatory system, administered to the monkey. Morphine Derived from opium. Monkey is made dependent to morphine, 4 times a day, in 30 successive days, in a large amount. End period, the monkey is dependent to morphine. To show that, a tool is used to manipulate, use operant learning, positive reinforcement, reward with drug when it accomplishes a task. The monkey quickly learns to press the lever.
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