Reward Representation and Learning Flashcards
What is necessary for learning to increase reward and decrease punishing experiences?
Represent the reward value of stimuli, establish predictions of future reward and punishment, and use the predictions to guide behavior
In regards to the before and after strawberry ice cream snack of an fMRI study, describe the pattern that suggests that the activity reflects the reward value of the participant.
Before snack, the smells of apple pie/ice cream evoked equally greater activity than the smell of car wax, but afterwards the difference between strawberry ice cream and car wax was disproportionately reduced.
In regards to the before and after strawberry ice cream snack of an fMRI study, describe the pattern that suggests that the activity reflects the reward value of the participant.
Before snack, the smells of apple pie/ice cream evoked equally greater activity than the smell of car wax, but afterwards the difference between strawberry ice cream and car wax was disproportionately reduced.
A proposed role of neural systems that generate prediction error is…?
To improve reward predictions by gathering plasticity of neural representations
Neuroimaging studies suggest that activity in the ventral striatum resembles what?
Prediction error
Activity in the striatum is greater when the subject has to actively respond than when the task is passive, even when the same reward is expected. This observation supports what idea?
That stimulus is salient, not reward prediction error, and is indexed by ventral striatal activity during reward prediction.
What prediction error accounts of midbrain dopamine response predicts the response to a monetary reward that was less than a person expected?
Dopaminergic neurons would decrease their firing rates
What prediction error accounts of midbrain dopamine response predicts the response to a monetary reward that was less than a person expected?
Dopaminergic neurons would decrease their firing rates
Activity in the dorsal striatum responds to what?
Violations of expected reward in an instrumental reward learning task
More dorsal striatal areas may play a larger role in prediction of _____ than of ______.
Response-reward associations, stimulus-reward associations
How does the orbitofrontal cortex play a role in decision making?
It maintains flexible representations of reward associations needed to make choices
How does the orbitofrontal cortex play a role in decision making?
It maintains flexible representations of reward associations needed to make choices
The limitation in the research investigating reward processing and decision making is…?
Almost no studies have investigated interactions between different neural structures in reward processing
