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Cognitive Domain
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Consciousness Chapter
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Drugs Module 26
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Introduction Module 26: Drugs
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Psychoactive Drug Chemical substance that alters perceptions, mood, or behavior Three common psychoactive drugs: –Caffeine –Alcohol –Nicotine Induce an altered state of consciousness
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Dependence State of physiological, psychological or both types of need to take more of a drug after continued use. Withdrawal follows if the drug is discontinued
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Dependence Play “Brain Mechanisms of Pleasure and Addiction” (6:51) Segment #6 from The Mind: Psychology Teaching Modules (2 nd edition). http://www.learner.org/vod/vod_windo w.html?pid=1613
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Withdrawal Discomfort and distress that follow when a person who is dependent on a drug discontinues the use of that drug Withdrawal symptoms are usually the reverse of the drug’s effects.
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Tolerance Reduced responsiveness to a drug, prompting the user to larger dosages to achieve the same pleasurable effects previously obtained by lower doses
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Tolerance
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Alcohol: A Depressant Module 26: Drugs
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Depressants Drugs that reduce neural activity and slow body functioning Includes alcohol and sedatives
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Alcohol (ethyl alcohol) Found in beer, wine, and liquor The second most used psychoactive drug (caffeine first) Slows thinking, and impairs physical activity
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Blood Alcohol Content (BAC) A measure of how much alcohol is in a person’s bloodstream BAC of.8 considered legal intoxication in most states
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Euphoric Affects of Alcohol Alcohol impairs the parts of the brain responsible for controlling inhibitions and making judgments
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Alcohol, Memory, and Sleep Studies have shown that alcohol impairs memory by suppressing the processing of events into long term memory. Alcohol impairs REM sleep, further disrupting memory storage.
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Alcoholism
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Alcoholism and Heredity Play “Alcohol Addiction: Hereditary Factors” (11:40) Segment #29 from The Mind: Psychology Teaching Modules (2 nd edition). http://www.learner.org/vod/vod_windo w.html?pid=1636
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Stimulants Module 26: Drugs
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Stimulants Drugs that excite neural activity and speed up body functions Include: caffeine, nicotine, amphetamines, and cocaine
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Caffeine Stimulant found in coffee, chocolate, tea, and some soft drinks Provides user with a sense of increased energy, mental alertness, and forced wakefulness Blocks neurological receptor sites that, if activated, sedate the central nervous system
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Nicotine Stimulant found in tobacco Effects similar to those of caffeine Very addictive and does not stay in the body very long
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Cocaine Stimulant derived from leaves of the coca plant Crack – cocaine crystals Blocks the reuptake of certain neurotransmitters Dependency is quick and severe; places extreme strain on cardiovascular system
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Amphetamines Drugs that stimulate neural activity, speeding up body functions Include increased energy and mood changes Includes: speed, uppers, and methamphetamines Mimic adrenaline Can cause irreversible changes in mood
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Hallucinogens Module 26: Drugs
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Hallucinogens Psychedelic drugs that distort perceptions and evoke sensory images in the absence of sensory input Include: LSD and ecstasy Sometimes called “psychedelics” meaning mind-manifesting
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Lysergic Acid Diethylamide (LSD) Powerful hallucinogenic drug Also known as “acid” The effects vary from person to person Users can be dangerous to themselves and others.
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Ecstasy Hallucinogenic drug that produces lower inhibitions, pleasant feelings, and greater acceptance of others Also called MDMA Even moderate users may experience permanent brain damage.
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Marijuana Module 26: Drugs
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Marijuana Leaves, stems, resin, and flowers form the hemp plant that, when smoked, lower inhibitions and produce feelings of relaxation and mild euphoria THC (delta-9-tetrahydrocannabinol) is the active ingredient Disrupts memory; lung damage from smoke
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Prevention Module 26: Drugs
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A Guide to Selected Psychoactive Drugs
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High School Drug Use
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Treatment Play “Treating Drug Addiction: A Behavioral Approach” (19:40) Segment #30 from The Mind: Psychology Teaching Modules (2 nd edition). http://www.learner.org/vod/vod_windo w.html?pid=1637
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Mouse Party http://learn.genetics.utah.edu/content/ad diction/drugs/mouse.html
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The End
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