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Drugs Most of the drugs that people abuse have their effect on the limbic system of the brain. The limbic system is located deep within the brain near the top of the brain stem. The limbic system produces the feelings of pleasure, pain, anger, and fear which characterize our emotions. All drugs of addiction work on our emotions. If a certain drug makes us feel very good, we tend to want to take that drug again and again. It is because of this temporary good feeling that we become psychologically addicted to a drug. Within the limbic system, drugs work on the brain by way of neurotransmitters. Neurotransmitters are the chemicals which allow our nerve cells to communicate with each other. Some of the neurotransmitters affected by drugs are serotonin, norepinephrine and dopamine. The class of drugs called stimulant drugs will usually make more a neurotransmitter(s) available to the brain. The class...

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