Chapter 4 - Drugs and Behavior Chapter 4 DRUGS: OVERVIEW...

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Drugs and Behavior Chapter 4
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DRUGS: OVERVIEW Reasons for use? Social expectations; giving in to peer pressure Dealing with or escaping stress, anxiety, and tension; avoiding pain Achieving altered state of consciousness
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Drug Terminology
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Definition of terms Addiction a behavioral pattern of drug abuse that is marked by an overwhelming and compulsive desire to obtain and use the drug Addicts versus non-addicts- false dichotomy?
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Drug use is viewed as a continuum, progressing from casual use to addiction the drug assumes increasing control of the individual’s behavior as the pattern of drug use approaches addiction
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Definition of terms Tolerance When the original dose of the drug no longer produces the desired effect- one must take increasingly larger doses of the drug to achieve the same behavioral effect
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Definition of terms Dependency refers to a change in the nervous system so that a person now needs to take the drug to prevent the occurrence of painful physical withdrawal symptoms
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Definition of terms Withdrawal painful physical and psychological symptoms that occur after a drug-dependent person stops using the drug chills; fever; diarrhea; muscle cramps; nausea; irritability
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How do Drugs Work?
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Drugs Affect Neurotransmitters Mimicking- some drugs produce their effects by mimicking the way neurotransmitters work Reuptake - some drugs block the reuptaking of neurotransmitters- increasing both physiological and psychological arousal
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Reward Circuit of the Brain Reward Center - Dopamine
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ALCOHOL
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ALCOHOL History and use First brewery appeared in Egypt in about 3700 B.C. Level of alcohol is measured in percentage in the blood: blood alcohol content or BAC National legal definition of being drunk is 0.08 (after possibly 3-4 drinks in one hour)
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Alcohol is classified as a depressant
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This note was uploaded on 01/28/2012 for the course PSYCH 210 taught by Professor Akiyama during the Fall '08 term at Diablo Valley College.

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Chapter 4 - Drugs and Behavior Chapter 4 DRUGS: OVERVIEW...

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