Figure 8.

Manifestation of choice in stimulus-locked LRP. In the congruent and incongruent conditions, the LRPs of correct (solid blue and red) and incorrect (dashed blue and red) responses show no significant difference until ∼150 ms after stimulus onset. This suggests that the prestimulus preparatory activity associated with payoff processing does not predict choice. However, the point of divergence between correct and incorrect responses coincides with the emergence of the first transient increase in payoff activity (Fig. 6) at ∼150 ms after stimulus onset.