Figure 2.

Behavior across task conditions. A–C, Lipping behavior (mean ± SEM). A, In cued trials, the proportion of lipping responses to cues increased with reward size, with no difference between active and passive trials. B, At the feedback in cued trials, lipping responses were significantly more frequent in active than in passive trials, with little effect of reward size. C, In self-initiated trials, lipping increased for larger rewards. D, E, Bar-release behavior (mean ± SEM). D, In cued trials, error rates were inversely related to reward size. E, In self-initiated trials, the latency to release the bar from the end of the preceding trial (release interval) decreased for larger rewards.