Figure 4.

Fit for GV, DV, and PE to activity in the ventral striatum. The β values in this figure come from a secondary fMRI analysis model where PE was entered as the first parametric regressor for response giving it the maximum explanatory power. The y-axis shows the mean β for GV, DV, and PE. The error bars represent the 95% confidence interval of the mean. The different value computations (GV, DV, PE) are shown on the x-axis. Dark gray bars highlight value computations for which the fit to activity is greater than zero. The effects of GV, DV, and PE were compared using paired t tests and those results are represented by the p values on the graph.