Figure 4.

Brain areas encoding monetary value and value-based choices between equal-value options. A, Monetary values (i.e., WTP scores) were parametrically associated with the BOLD signal in a priori defined regions of interest in the vmPFC and vStr. B, The dACC and the MFG showed greater BOLD signals during hard decisions compared with easy decisions. Color bar indicates z-statistic of parameter estimates. Bar graphs represent averaged parameter estimates. Error bars indicate SEM. *p < 0.05; **p < 0.01; ***p < 0.001.