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PSYCHOACTIVE DRUGS

Chapter 3. PSYCHOACTIVE DRUGS. HALLUCINATIONS. Def. : false perceptions with no external stimulation Created by Sensory deprivation  brain creates own stimulation if not enough in the environment (imaginary friends, seclusion, solitary confinement)

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PSYCHOACTIVE DRUGS

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  1. Chapter 3 PSYCHOACTIVE DRUGS

  2. HALLUCINATIONS • Def.: false perceptions with no external stimulation • Created by Sensory deprivation brain creates own stimulation if not enough in the environment (imaginary friends, seclusion, solitary confinement) • Or too much stimulation causes it (schizophrenia)

  3. HALLUCINATIONS & DRUGS • LSD, alcohol, opium, caffeine, etc can create psychoactive hallucinations • Impairs judgment & emotion-based brain mechanisms • Most widely abused: cocaine, heroin, & amphetamines (stimulants)

  4. PSYCHOACTIVE DRUG CATEGORIES (1) • HALLUCINOGENS/ PSYCHEDELICS: ex, PCP (“angel dust”) user feels disembodied & insensitive to pain; Shrooms; LSD

  5. PSYCHOACTIVE DRUG CATEGORIES (2) • OPIATES: highly addictive drugs; suppress sensation & response to stimulation • Morphine & codeine: pain-relieving properties like body’s own endorphins • Heroin is made from morphine & 1st developed by Bayer Co.  rush of euphoria & addiction starts from 1st use!!

  6. PSYCHOACTIVE DRUG CATEGORIES (3) • DEPRESSANTS: slow down mental & physical activity by inhibiting CNS • Barbiturates, anti-anxiety meds, & alcohol  all actually reduce REM-sleep, so still tired despite full nights rest! • Overdoses cause loss of all sensations, coma, or death • Alcohol one of 1st psychoactive drugs used by humans  now 1 in 10 Americans suffer from alcoholism

  7. PSYCHOACTIVE DRUG CATEGORIES (4) • STIMULANTS: speed up mental & physical rates of activity & increases CNS activity  Used for ADHD & narcolepsy • Cocaine users want higher pleasure sensations & greater energy and awareness; heavy users experience hallucinations

  8. Natural Stimulants

  9. BUT ARE THEY DRUGS? • Two other stimulants: caffeine & nicotine…do you think they aredrugs??

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