Figure 3.

(A) The δ component (low discount rate) was more strongly associated with neural activity in the VPut (ventral putamen) in older compared to younger adults. R = right. A = 7. Anatomical underlay is an average of all subjects’ spatially normalized structural scans. (B) Significant δ-related neural activity in the VPut in older but not younger adults. *p < 0.05, n.s., not significant; error bars are SEM; YA, younger adults; OA, older adults. (C) For younger adults the VPut is active only when the earliest option is available immediately, but not when it is delayed. However, for older adults activation in the VPut increases for both immediate and delayed options. Error bars are SEM.