The analyses of vmPFC activity revealed trends towards increases for
complex numbers and color modifications over number list whereas
quantification did not elicit higher activity than the list. These results
provide moderate support for an implication of the vmPFC in basic combination
(Bemis and Pylkkänen, 2011; Pylkkänen et al., 2014) and suggest
that numerical input can also drive combinatorial activity in the
vmPFC.