The role of dopamine in dynamic effort-reward integration.

Here, we found a highly significant effect of reward [ F 1,19 = 8.86, p = 0.008], indicating that subjects were more likely to sustain effort in the late reward period when a high, as compared with a low, reward was at stake (placebo: t 19 = 3.68, p = 0.002; levodopa: t 19 = 2.87, p = 0.010; haloperidol: t 19 = 1.87, p = 0.076).

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