Midterm 1 Flashcards
classical conditioning of craving
UCS -> CS
UCS + NS -> UCR
CS -> CR
operant conditioning and drug use
postive reinforcement: creates positive emotion
negative reinforcement: helps get rid of negative emotion
operant conditioning and drug use
positive punishment: feeling sick
negative punishment: cost money
social learning theory
stress, expect alcohol to reduce stress, drink alcohol
bio psychosocial model
factors that influence drug use change over time
epidemiology
study of incidence, prevalence, trends, correlates of drug use and associated conditions
epidemopology methods
- surveys
- sales data
- administrative data
- waste water analysis
physical dependence
tolerance or withdrawal
T: need more of drug to get same effect
W: unpleasant symptoms after prolonged period of use
psychological dependence
compulsive use, inability to control use, craving to use, relapsing
drug misuse/problem use
drug use leads to harm and problems
DSM-5 substance use disorder
problematic pattern of substance use leading to clinically significant impairment or distress
components of peripheral nervous system
somatic nervous system: sensory neurons + movement
autonomic nervous system: parasympathetic + sympathetic
central nervous system: brain + spinal cord
ANS
Sympathetic: fight or flight, increased heart rate, breathing, norepinephrine is primary neurotransmitter, stimulant drugs active SNS
Parasympathetic: slowed heart rate, acetylcholine is primary neurotransmitter, nicotine activates PNS
CNS
limbic system: emotion, memory, reward/learning
reward system
operant conditioning: drug stimulates dopamine release in reward centres, make you feel good
drug expectancy learning: important for forming memories about reward
classical conditioning: conditioned stimuli activate dopamine release in dopamine pathways
neurotransmission
- bind directly to post-synaptic receptors
- inhibit transporters and thus repute of neurotransmitters
- inhibit action of enzymes that break down neurotransmitters in synapse
dopamine
reward, motivation, pleasure, compulsion,
agonist vs antagonist
agonist: increase NT activity (heroin) mimic action of NT
antagonist: decrease NT activity (naloxone) bind to and block receptor
serotonin
mood regulation, memory processing, sleep, cognition
norepinephrine
arousal, attentiveness, food intake, wakefulness