Chapter 2 Flashcards
Psychotherapeutic Revolution
Success of drug Chlorpromazine sparked interest in building field of research that focused on behavioural pharmacology
Tolerance
Decreased effectiveness of a drug over time
Acute tolerance
Tolerance that develops after a single administration of a drug
Pharmacokinetic Tolerance
Increased rate or ability of body to metabolize a drug
Pharmacodynamic Tolerance
Adjustment the body makes to compensate for effects of a drug
Behavioural Tolerance
Developed over time through experience with the drug
Withdrawal
Body’s reaction to the loss of a drug
Dependence
Presence of withdrawal symptoms when the drug is withheld and when a person NEEDS to take a drug
Opponent Process Theory
Abused drugs stimulate a process that creates a euphoric state followed by a compensatory dysphoric state
Sensitization
Increase in behavioural effects following repeated administration of a drug, inverse of tolerance
Structural imaging techniques
MRI - creates images of the body/brain using a large magnet and radio waves
PET and fMRI
Measure metabolic activity that is correlated with neuronal activity
PET
Measures the concentration of a radioactive tracer inserted to bloodstream
fMRI
Measures relative amount of oxygenated to deoxygenated blood
Pros and Cons of MRI, PET, and fMRI
MRI -
Pro: high contrast and spatial resolution
Con: expensive and can be awkward
PET -
Pro: reveals distribution and concentration of drugs and assesses receptor binding competition
Con: low spatial resolution and some chance of health risk
fMRI -
Pro: good spatial like MRI and better temporal resolution than PET
Con: very expensive