How to locate the DMPFC and where to stimulate

When we locate the dorsomedial prefrontal cortex, we begin by measuring the distance from nasion to inion and it turns out to be 38(cm). 0.3 or 30% of 38 takes us to 11.5(cm), so that right there would be the spot at which we would stimulate DMPFC, either a little bit to the right, a little bit to the left, or positioned exactly in the center and angling in one direction or the other.