Module 9 Flashcards
(32 cards)
origins of drug abuse
sometimes used during religious rituals, or to control pain and increase energy during war
substance use disorder
drug use continues despite significant life disruption; brain changes may persist after quitting substance; ranges from mild (2-3) to severe (6+ indicators)
how drugs work
enters the bloodstream via ingestion, inhalation, absorption, or injection; affects synapse; can be agonist or antagonists
liver
produces enzymes that metabolize drugs
psychoactive drugs
chemicals that change perceptions and mood
depressants
calm neural activity; slow body functions and behavior; opposite of stimulants
alcohol
depressant; agonist (causes GABA); equal-opportunity drug; low doses produce similar effects as stimulants; slows neural processing, memory disruption, reduced self-awareness and self-control
alcohol poisoning
often causes by moderate drinking followed by heavy drinking (reduces urge to vomit)
expectancy effects
simply believing one is consuming a drug (alcohol) can cause to act as if they were on it; people jump at the chance to attribute behavior and thoughts to outside sources
barbiturates
depressant; tranquilizers; can impair memory and judgement; sometimes prescribed to decrease anxiety
opioids/opiates/narcotics
can be considered depressant/stimulant too; elevate mood; pain relief; artificial endorphins; affects ventral tegmental area and nucleus accumbens (dopamine-producing neurons/neurla reward circuitry)
examples of opioids
codeine, morphine, heroin
stimulants
increase neural activity, body functions, and behavior; used recreationally (illegally) to improve academic/atheltic performance
caffiene
stimulant; most common drug; increases alertness
nicotine
stimulant; delivered through e-cigs w/o cancer-causing tar; each cig = -12 min of life; correlates with higher of depression, chronic disabilities and divorce; ex-smokers sometimes return during stress
cocaine
stimulant; snorted, injected, or smoked (crack); decreases dopamine, serotonin, and norepinephrine supply; back and forth between euphoria and aggitation
amphetamines
stimulant; stimulate neural activity, mood, and energy
methamphetamine (meth)
stimulant; chemically similar to amphetamine, triggeres dopamine release; highly addictive (most dangerous)
ectasy/MDMA/Molly
stimulant and mild hallucinogen; triggers dopamine and stored serotonin release; “hug drug” - causes increased mood and sociableness; “club drug”
hallucinogens/psychedelics
alter perception; can lead to hallucinations; “out-of-body” experience; 10-15% of people on these drugs have a near-death experience
near-death experience
altered state of consciousness; reported by some cardiac arrest survivors; similar hallucinogen symptoms
LSD (acid)
hallucinogen; causes stream of pictures and euphoria (kaleidoscope); “visual trip;” risk of panic/detachment
marijuana
mild hallucinogen; consists of THC; produces high; less withdrawals bc stays in body longer; can be used medically for anxiety; may decrease male sex hormones; increases brain cell loss (hippocampus)
heroin
depressant/opioid; rush of euphoria, relief from pain; highly addictive and dangerous