The Reward Experiment
- “Why aren’t we always prepared?”
- Is it a matter of motivation?
- Reward bocks: flat(ter) preparation curves?
- Reward blocks: more memory effects
- [Cognition Hazard Rates](Cognition Hazard Rates.md)
- Reward blocks: less memory effects
- [Cognitive fMTP](Cognitive fMTP.md)
- Fanning
- smaller if reward
- less effects of previous trial
Findings
- The effects of reward and brightness on preparation
- Additive effects : neither affects the slope
- even when motivated, preparation depends on FP
- Stimulus visibility does not interact with preparation
- Maybe not a visual attention process
- Reward has more effects when targets are highly visible
- Interaction : Reward * Brightness
- Effects on accuracy
- Reward blocks→ higher accuracy
- High visibility → higher accuracy
- More errors with longer foreperiod….
- …But only when rewarded/motivated
- …And mainly when visibility low
- Effects on memory from past trials
- Past trial effects
- This effect (the fanning) is essentially constant across target visibility and reward
- If anything: a little bit larger when there is no reward.
- Effects on memory
- Up to n-5
- When there is reward, there is slightly ‘faster forgetting’
- Faster forgetting when rewarded slightly
