Questions and Answers
Which of the following best describes tolerance in relation to drug administration?
A decrease in the effectiveness of a drug that is administered repeatedly
What is the main function of the brain's reward system?
To motivate individuals to engage in activities essential for survival
What is the motivation for early addiction to drugs?
Reward and positive reinforcement
What is positive reinforcement?
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What is withdrawal?
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What is sensitization?
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Study Notes
Drug Addiction Concepts
- Tolerance: A state in which the body adapts to the presence of a drug, requiring higher doses to achieve the same effect.
Brain's Reward System
- Main function: To motivate behaviors that stimulate pleasure and satisfaction, such as eating, sex, and social interactions.
Early Addiction
- Motivation: The initial rewarding effects of drugs, such as feelings of pleasure or euphoria, which can lead to repeated use and eventually addiction.
Positive Reinforcement
- Definition: A process in which a behavior is followed by a pleasing consequence, increasing the likelihood of the behavior occurring again in the future.
Withdrawal and Sensitization
- Withdrawal: A physiological response to the sudden removal of a drug, characterized by unpleasant symptoms, such as anxiety, nausea, and tremors.
- Sensitization: An increased response to a drug after repeated use, often resulting in increased cravings and a higher likelihood of addiction.
