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Clinical Neuroscience 2
Drug abuse and stress
75
Psychology
Undergraduate 3
05/04/2009

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Cards

Term
Substance
Definition
natural or synthesized product that has psychoactive effects
Term
Attitudes towards substances
Definition
Large variation in attitude towards alcohol use between cultures and over time; USA has complicated attitudes towards drinking; large underage drinking punishment but media and social situations condone drinking
Term
Age and location most likely to use drugs
Definition
18-25; in metropolitan areas
Term
Substance intoxication
Definition
maladaptive behavioral/psychological symptoms due to drug’s effect on CNS
Term
Substance withdrawal
Definition
clinical significant distress after stopping or reducing drug use
Term
Substance abuse
Definition
when recurrent substance abuse leads to significant harmful consequences
Term
Substance dependence
Definition
when substance use leads to physiological dependence or significant impairment/distress; symptoms include tolerance and withdrawal
Term
Brain areas/neurotransmitters upon which drugs usually act
Definition
VTA and NAcc; dopamine, serotonin, enkephalins, GABA affected
Term
Depressants
Definition
Benzodiazepines and barbiturates, opiates, inhalants, alcohol
Term
Benzodiazepines and Barbiturates
Definition
prescribed sedatives; GABA agonistis (low dose is relaxing, high dose causes loss of coordination, judgment/concentration problems); used for anti-anxiety, anti-seizure, sleeping aid
Term
Opioids
Definition
morphine, herion, codeine, vicodin, oxycontin, methadone (weans people off opiates)
Term
Opioid intoxication symptoms
Definition
euphoria, then bad mood, nausea, muscle aches, discharge, pupil dilation, goose bumps, sweating, diarrhea, insomnia
Term
Opioid withdrawal symptoms
Definition
fatigue/drowsiness, anxiety/depression, nausea/vomiting
Term
Number of opiate receptors and pain tolerance
Definition
Varies among people; people with more receptors have a higher pain tolerance
Term
Caffeine
Definition
Stimulates CNS, increases dopamine, norepinephrine, serotonin, adrenaline levels; blocks adenosine receptors which induce sleepiness
Term
Caffeine intoxication symptoms
Definition
restlessness, nervousness, flushed face, upset stomach, urination
Term
Caffeine withdrawal symptoms
Definition
fatigue/drowsiness, headache, irritability
Term
Nicotine
Definition
Cholinergic, monoamine, opioid agonist; arousal, alertness, SNS activation increased; prevalence: 30%
Term
Nicotine withdrawal
Definition
depression, insomnia irritability, frustration, anxiety, decreased heart rate, increased appetite/weight gain; cessation is extremely difficult
Term
Nicotine brain activity modulation
Definition
dopamine release in NAcc; inhibits GABAergic inhibition of glutamatergic/dopaminergic neurons
Term
Amphetamines/cocaine
Definition
Cause release of dopamine/norepinephrine and block reuptake, persistent dopaminergic downregulation; prevalence:4%
Term
Amphetamine/cocaine intoxication symptoms
Definition
increased attention, decreased fatigue, euphoria, self-confidence, alertness, agitation, paranoia
Term
Methamphetamine
Definition
stimulant, man-made, long lasting high, remains in the body for extended period of time, increases dopamine release/blocks reuptake limited medical use; limbic system and hippocampus greatly effected
Term
Cocaine
Definition
stimulant and local anesthetic, plant-derived, smoking produces brief high, stays in body for short periods of time, blocks dopamine reuptake, can be used in surgical procedures
Term
Cocaine intoxication symptoms
Definition
behavioral changes, irritability, anxiety, pupil dilation, blood pressure changes, nausea/vomiting, slowed breathing, seizures
Term
Cocaine snorting vs. smoking
Definition
Snorting -> longer, less intense high; smoking -> shorter, more intense high
Term
Cocaine treatment
Definition
Interventions + cognitive behavioral treatment
Term
Hallucinogens/PCP
Definition
group of substances including LSD and MDMA (ecstasy); PCP is a powder snorted or smoked; not hallucinogen but has similar effects
Term
Hallucinogens/PCP intoxication symptom
Definition
behavioral/perceptual changes, pupil dilation, rapid heartbeat, sweating, blurred vision, panic, tremors
Term
Hallucinogens/PCP withdrawal
Definition
Flashbacks, dehydration
Term
MDMA
Definition
Causes serotonin release, blocks uptake; potentiates dopamine and norepinephrine
Term
MDMA intoxication symptoms
Definition
acts within an hour, increased energy, empathy, relaxation/less social anxiety, enhanced senses, hyperthermia (can cause muscle breakdown/kidney failure)
Term
MDMA long term effects
Definition
depression and aggression for several days after intoxication, short term memory deficits, memory may be effected
Term
Genetics and substance use
Definition
Personality characteristics linked with substance abuse include impulsivity, sensation seeking, aggression, lack of concern for consequences; Comorbid disorders caused by genetics may also lead to substance abuse (depression, bipolar, SZ, APD
Term
NAcc and reward
Definition
High dopaminergic and opioid receptor density; Natural rewards and drugs increase NAcc activity
Term
NAcc structure
Definition
shell – receives dopaminergic projections from VTA, excitatory projections from amygdala, hippocampus, medial PFC; core – responsible for motor responses related to projections from shell
Term
Tolerance and withdrawal
Definition
Tampering with neurotransmitter levels through drug use causes less receptors and neural damage; less receptors/neurotransmitters cause craving/withdrawal; Craving/seeking behavior maintained by glutamate
Term
Behavioral/cognitive theories and substance use
Definition
substance-related behaviors learned from parents and other important people in cultures; substances can substitute for failure to attain goals
Term
Sociocultural theories and substance use
Definition
environment may support substance use; some substances are more acceptable for one gender than for another; abuse patterns differ between men and women
Term
Detoxification treatment
Definition
controlled withdrawal from substance
Term
Antidepressants/sedatives and substance abuse therapy
Definition
help with withdrawal, may reduce relapse
Term
Antagonist medications and substance abuse treatment
Definition
block affects of drugs
Term
Opioid antagonists
Definition
reduce alcohol effects and those of morphine/heroine
Term
Disulfiram and substance abuse treatment
Definition
induces nausea when alcohol is consumed
Term
Methadone and substance abuse treatment
Definition
synthetic opioid; blocks heroine receptors; can also be addictive; relatively good outcome
Term
Behavioral/cognitive treatments for substance abuse
Definition
o Aversive conditioning, covert sensitization therapy (imagine bad consequences); cue exposure (extinction of conditioning); cognitive/social therapy; prevention
Term
Cannabis intoxication symptoms
Definition
time distortion, hunger, motor impairment, drowsiness, hallucinations, paranoia
Term
Cannabis neurological effects
Definition
Ca++ channels close, neurotransmitter release less likely to be released
Term
CB1 receptors
Definition
Most present in hippocampus/cerebellum; other higher order brain regions
Term
Cannabis and learning
Definition
LTP inhibited by glutamate reduction to the point that NMDA receptors are not activated
Term
Cannabis withdrawal symptoms
Definition
less hunger, more dreams, more irritable
Term
Cannabis and SZ
Definition
THC causes SZ-like qualities;smoke more pot, more likely to have SZ; CB1 receptor polymorphisms may be related to SZ; cerebellar impairment in SZ and THC users
Term
Happy things
Definition
self-esteem, personal control, optimism, extraversion, intimacy, religious conviction, health, work satisfaction, genes
Term
Money and happiness
Definition
Money doesn’t buy happiness unless you are so poor that you do not have basic necessities that can be obtained with money
Term
Relationships and happiness
Definition
Men happier when married than single men are; older couples happier than younger couples; couples with children who have left home are happier than those without children
Term
Stress response effects
Definition
one specific to stressor (heat->sweating); one non-specific, the same for every stressor
Term
Alarm
Definition
Initial SNS, hormonal response in general adaptation response; uses energy only for senses and important bodily functions; HR, BP, breathing, alertness increase, sleep inhibited
Term
Alarm stage hormonal pathways
Definition
Pituitary -> adrenal cortex -> cortisol; SNS -> adrenal medulla -> epinephrine (adrenaline)
Term
Resistance
Definition
decrease glucose/increase lipids -> hunger; increased cortisol, decreased protein synthesis, increased anxiety/depression vulnerability; immunosuppression
Term
Exhaustion
Definition
less resources, fatigue, increased BP, risk for heart disease, strokes, reproductive disorders, hippocampal neurons destroyed
Term
Stress and learning
Definition
Mild stress may enhance learning; prolonged, serious stress leads to less dendrites and less neurogenesis in hippocampus
Term
Stress and amygdala
Definition
may cause amygdala hypertrophy which makes people more sensitive to emotion during stress
Term
Stress response and sleep deprivation
Definition
Stress response enhanced when sleep deprived; Increased BP, increased cortisol, increased ghrelin/decreased leptin, decreased neurogenesis in hippocampus, can affect cognition, spatial memory, increases fighting, distractability
Term
Coping with stress
Definition
easier if sociable, happy family, exercise, control life, positive outlook, nurturing mother
Term
PTSD
Definition
severe, often persistent disorder subsequent to a traumatic event; re-experience of traumatic event, enhanced arousal, avoidance of trauma-related stimuli
Term
PTSD diagnosis
Definition
Exposure to traumatic event (person experienced actual/threatened death/serious injury), person responded with intense fear; Event re-experienced; recurrent memories, nightmares, intense distress; psychological reactivity to cues resembling event; Avoidance of stimuli associated with trauma/numbing of responsiveness; Symptoms for more than one month and cause psychosocial/occupational distress/impairment
Term
PTSD epidemiology
Definition
10% prevalence in women; 5% in men; Rates higher in developing countries, esp. those at war; Very common in war vets; 32% of WWII vets had PTSD 50 years after the war; Increased likelihood for PTSD if forced to participate, no protective training, seeing others in distress, Hispanic, more exposures to trauma
Term
Types of torture
Definition
Sexual torture and physical torture (illegal); psychological manipulations, humiliating treatments, forced stress positions, sensory discomfort, deprivation
Term
Torture and PTSD
Definition
Those not physically tortured are just as likely to have PTSD as those who were physically tortured; distress level/amount of control during torture are better PTSD predictors
Term
PTSD comorbidity
Definition
Alcohol/substance disorders, partner aggression, divorce, depression
Term
PTSD risk factors
Definition
Severity of trauma, female, physiological hyperactivity, history of trauma, lack of social support; genetics play very small role
Term
PTSD and the brain
Definition
PTSD patients tend to have smaller hippocampal volumes; this is more of a genetic effect according to twin studies; patients have lower thalamus, anterior singulate cortex and PFC activity when thinking about trauma; less limbic inhibition
Term
PTSD psychotherapy
Definition
Exposure therapies – response extinction, reduce avoidance; Anxiety management – relaxation, breathing, self-talk, education; Avoiding self-blame
Term
PTSD pharmacological treatment
Definition
SSRIs have modest effects; Antipsychotic effects may help, especially for hallucinations, paranoia, dissociation, anger
Term
Stimulants
Definition
Caffeine, nicotine, amphetamines, cocaine
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