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A good friend of yours hopes that hypnosis will improve his memory and help him study longer and more effectively. He worries, however, that he might not be easily hypnotized. Your mother hopes that hypnosis will help relieve her arthritis pain but fears that under hypnosis she might do something embarrassing. Discuss the extent to which the hopes and fears of your friend and your mother are realistic. Where appropriate, use research evidence to support your conclusions.

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Drugs

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Influences on Drug Use Biological heredity Identical twins Adoption studies Boys at age 6 excitable, fearless, impulsive (genetic traits) are more likely to take drugs NPY brain chemical more sensitive to alcohol Gene identified to predispose people to alcohol dependence Psychological Lacking sense of purpose Stress Depression Social-cultural Urban enviro Cultural attitude toward drugs Peer influences

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Drugs blood-brain barrier capillaries that protect our drug. psychoactive drugs - drugs that are small enough to pass through.

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Psychoactive Drugs Psychoactive Drugs - Chemicals that alter moods and perceptions through actions on neural synapses Altered state (altered moods and perceptions)associated with changes in brain activity Examples: alcohol, marijuana, cocaine (depressants, hallucinogens, stimulants)

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Dependence and Addiction Addiction compulsive craving for a drug despite adverse consequences What about each of our three major types of drugs make someone want to keep taking them? Sense of well-being, feeling of euphoria, blissful pleasure, relief from anxiety, increased self-confidence, alertness Withdrawal symptoms can contribute to addiction Tolerance need to take larger and larger doses to experience the same effects Neuroadaptation - change in brain chemistry that offsets the effects of a psychoactive drug Withdrawal discomfort and distress that follow the discontinued use of certain drugs (aches, nausea, distress) Physical dependence physiological need for a drug indicated by withdrawal symptoms Psychological dependence psychological need to use a drug

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Drugs are either. Agonists mimics neurotransmitters Opiates (heroine, morphine) mimic endorphins Antagonists block neurotransmitters LSD blocks serotonin Reuptake inhibitors Cocaine blocks reuptake of dopamine, Ecstasy blocks reuptake of serotonin

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Depressants Depressants - Slow down body processes and calms neural activity. Breathing slows, pupils constrict, anxiety replaced by pleasure Alcohol Barbiturates/ tranquilizers Opiates (morphine, heroine)

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Alcohol Depressant Disinhibition (lowers inhibition) Feelings of self confidence Aggressive Reduces self-awareness and self-control Euphoria Slowed neural processing Memory disruption disrupts processing of recent experiences Suppresses REM sleep (no memory consolidation) Impairs grown of synaptic connections and contributes to nerve death Expectancy Effects

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Opiates Opiates - - Agonist for endorphins. Morphine, heroin, methadone and codeine. Pupils constrict, breathing slows, lethargy, blissful pleasure replaces pain and anxiety Highly addictive Brain stops producing own opiates (endorphins) brain will lack painkilling neurotransmitters after withdrawal

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Stimulants Stimulants - Excite neural activity and speed up body processes. Increased heart and breathing rates, pupils dilate, appetite diminishes, energy increases More powerful ones (like cocaine) give people feelings of invincibility. Amphetamines Methamphetamines Caffeine Nicotine Cocaine Ecstasy

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Hallucinogens Psychedelics Causes changes in perceptions of reality LSD, peyote, psilocybin mushrooms and marijuana. Reverse tolerance or synergistic effect

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An altered state of consciousness in which people experience fantastic images and often feel separated from their bodies is most closely associated with the use of 1.Heroin 2.Cocaine 3.Barbiturates 4.Marijuana 5.LSD Table

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Barbiturates are considered 1.Stimulants 2.Hallucinogens 3.Depressants 4.Opiates 5.Both a depressant and hallucinogen Table

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What do methamphetamine, caffeine and cocaine have in common? 1.They slow body functions and calm neural activity 2.They depress neural functioning and reduce pain 3.The distort perceptions and evoke sensations without sensory input 4.They excite neural activity and arouse body function 5.They relax the body, lead to disinhibition and produce euphoria Table