The results showed positive correlation between ln(k) and: (a) NAcc-vmPFC connectivity, (b) NAcc-left anterior PFC connectivity (pointed by the arrow) and (c) NAcc-right middle temporal gyrus connectivity. In other words, an increase in ln(k) (greater impulsivity) was correlated with stronger connectivity between the NAcc and vmPFC and left anterior PFC, and reduced negative connectivity with the right middle temporal gyrus. Table S.3 (Supplementary Material) displays a list of all coordinates.Results for the correlation between area under the discounting curve (AUC) and NAcc functional connectivity are displayed in Figure S.2