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Summary of the effects of D1 and D2 blockade and stimulation on probabilistic reversal learning, probabilistic discounting, and reward magnitude discrimination.
| Antagonist | Agonist | |||
|---|---|---|---|---|
| D1 | D2 | D1 | D2 | |
| Probabilistic reversal | ||||
| Reversals | ↓ | ↑ | Ø | ↓ |
| Errors | ↑ | ↓ | Ø | Ø |
| Win–stay/Lose–shift | ↑LS | ↓LS | Ø | ↑LS |
| Probabilistic discounting | ||||
| Risky choice | ↓ | ↑ | Ø | ↓ |
| Win–stay/Lose–shift | ↑WS/LS | Ø | Ø | ↑WS↓LS |
↓ decrease, ↑ increase, Ø no change, WS win–stay, LS lose–shift.
