Chapter #3 (p. 45/46, 53-55) Flashcards
____ is a term that usually refers to the aftermath of the acute effects of a drug, such as when you go out drinking at night and then feel sick the next day
hangover
when can you get withdrawal symptoms?
the opponent process theory tells us that we can expect withdrawal after each administration
symptoms of an alcohol hangover can be toxic as well as due to withdrawal, name two of each:
toxic: dehydration and stomach irritation
withdrawal: sensitivity to noise and light
An example of a hangover that is mostly a compensatory response occurs after taking cocaine. What happens?
after the euphoric effects of a dose wear off, users often experience a letdown or period of depression
How is acute tolerance explained by the opponent process theory?
When you take a drug, its effects will be greatest before the B processes build up. As the B processes get stronger, the strength of the A processes will diminish
what happens when you continue to take a drug for weeks or months and always maintain a certain level of the drug in the body?
the compensatory response builds up and withdrawal never occurs - so when you stop taking the drug, compensatory response is expressed as withdrawal
what do withdrawal symptoms often exaggerate?
effects opposite those of the drug, indicating they are compensatory responses
when the B process gets stronger and kicks in sooner so that the A process almost disappears entirely and the B process is more intense and last longer has important implications for the development of what?
addiction
how does slow elimination help with withdrawal effects?
the body might be able to readjust at the pace of the drugs elimination
T/F: there is a strong correlation between tolerance and withdrawal symptoms
F - it is not unusual for a person to show considerable tolerance to the effects of a drug but to have no withdrawal symptoms
It appears that the placebo effect may be responsible for up to ___% of the effect of antidepressant drugs and ___% of the effect of pain relievers
70; 50
The ____ mechanism is a top-down-pain-relieving pathway from the cortex to a pain control center in the lower brain that is capable of blocking pain
expectation
What areas of the brain are known to be involved in placebo-induced analgesia?
dorsolateral prefrontal cortex and the anterior cingulate cortex - both areas known to be involved in planning an evaluation of expected events
What factor seems to be the most effective in enhancing the placebo effect?
strength of the expectation of a particular drug
Besides expectation in receiving a drug, what other factors can enhance the placebo effect?
desire for effective treatment or motivation to avoid pain or other symptoms