Test 3 notes

Test 3 notes - Test3note 17:19...

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Test 3 note 17:19 Variations in Consciousness Psychoactive drugs: chemical substances that alter mental, emotional or  behavioral functioning’s o After taking drugs for a while, you need more  to feel the effect; brain  compensates for drug o Tolerance: progressive decrease in person’ responsiveness to drug due to  continued use; can easily cause overdose o Withdrawal: discomfort and distress from stopping an addictive drug Symptoms typically opposite of pleasurable sensations caused by drug Physical dependence: physiological need for a drug, experiences withdrawal  symptoms  Psychological dependence: a psychological need to use a drug, no  withdrawal Drug addiction: compulsive drug craving and use; don’t necessarily need  withdrawal or tolerance to be addicted o Very difficult to completely be free of drug’s effects once addicted Types of Psychoactive Drugs o Hallucinogens: drugs that distort perceptions and cause hallucinations Examples: LSD (lysergic acid diethylamide), mescaline, psilocybin  (mushrooms) Dramatic effect on senses Sensations intensified Hallucinations Time distortion Synesthesia: blending/crossing of sensory perceptions Effect mood/thoughts Often highly emotional
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Can cause mystical/dream like state Can have ‘bad trip’; focus on bad things in life/depends on setting Very low chance of dependency, no withdrawal effects, but tolerance  develops quickly Cross tolerance also occurs Very high doses or very frequent use can damage brain, cause  permanent psychosis (like schizophrenia)  o Cannabis: hemp plant from which marijuana, hashish and THC are  derived Marijuana: leaves, flowers, stems and seeds Most widely used illegal drug in US Causes relaxation, euphoria, time distortion, appetite increases,  enhances sensory experiences, mildly hallucinogenic Medical advantages: pain relief, appetite stimulation, controls nausea Common misconceptions: Marijuana causes amotivational syndrome Marijuana is a ‘gateway drug’ (if smoke pot, will move on to worse  drugs) Marijuana has no harmful effects (false):  Lung damage from smoke High doses can cause paranoia and panic Reaction times slowed  Judgment/thinking impaired Memory problems (not permanent) People do not become dependent on marijuana (false) Heavy users develop tolerance, experience very mild withdrawal
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Psychological dependency can occur Estimate 5-10% develop dependency o Stimulants: drugs that increase neural activity, speed up body functions Ex: caffeine, nicotine, amphetamines, cocaine Cause euphoria that is elated, full of energy
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Test 3 notes - Test3note 17:19...

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