Fig 3:

Significant effect (p<0.05) of learning ability on normalized volumes of area 11 (an orbitofrontal region), area 25 (a ventromedial PFC region), area 47 (an orbitofrontal/ventrolateral region), area 32 (medial PFC), area 24a (anterior cingulate cortex) and area 8v (a dorsolateral region) (n=24; 12 learners, 12 non-learners). Learners had significantly larger volumes of areas 11, 25, 47 and 32 than non-learners, while non-learners had a significantly larger volumes of areas 24a and 8v than learners.