Last minute Flashcards
What regulates all processes in the reward circuit?
Striatum
Where is relative reward located?
Orbitofrontal cortex
What neurotransmitter regulates circuitry in the reward network?
Dopamine.
What does meth do?
Increases dopamine level AND inhibits reuptake.
What does coke do?
Inhibits reuptake only
How do we test dopamine neurons?
In animals only because cannot do it in humans.
Dopamine neurons respond to…
Reward AND reward predicting stimuli (expectation).
If touches the reward, increase. If touches wire, decrease.
Located in ventral tegmental area.
What happens if there is a delay before the reward is received?
It be as if there was no reward. Length of delay needed depends on the nature of the stimuli.
People respond ___ when the reward is ____.
Faster when higher.
The magnitude of reward response increase is increased by…
Repetition.
What factors increase priming efficiency?
Both likelihood of high reward and the actual reward obtained.
What happens when you switch the value of the reward?
People adapt but do not report that anything has changed. Their responses track the new reward value.
When does the reward influence the number of trials correct?
When the task is easier.
Where do we see higher reward associated activity?
Only the higher visual areas.
Did people need to know that they were being infuenced to have a bias in the neglect search game?
No, there were even more biased if they did but it didn’t matter.
