Figure 2.

Reward motivation influences hippocampus expectancy violation processing. (A) A cluster in the left hippocampus showed significantly greater sensitivity to expectancy violations under states of high-versus low-reward motivation (P < 0.05, corrected for comparisons within the entire bilateral medial temporal lobe, 5278 voxels, 42 224 mm³). (B) Mean parameter estimates from the medial temporal lobe cluster are plotted to illustrate the direction of the interaction between reward motivation and expectancy violation processing.