Map of the areas involved in confidence in the human (left; basal ganglia in grey) and monkey brain (right). 1: antero-medial prefrontal cortex (Del Cul et al., 2009), 2, 4: anterior prefrontal cortex and temporal lobe (Fleming et al., 2010), 3: Brodmann area 46 (Lau and Passingham, 2006), 5: ventral striatum (Hebart et al., 2014), 6: pulvinar (Komura et al., 2013), 7: SEF (Middlebrooks and Sommer, 2012), 8: LIP (Kiani and Shadlen, 2009). 9: OFC. Areas in red are those that are solely involved in confidence. Areas in blue are those involved in both confidence and decision-making.