Dartmouth researchers have managed to register on fMRI brain scans the degree to which different people understand a subject, based on brain activity when viewing images. A study of twenty-eight students, split between engineering students and those with no engineering knowledge, was able to differentiate areas of the brain that activate when viewing a structure and considering the forces applied to it. Both types of student registered the image in the visual cortex, but engineering students recognition of different types of structure and the forces involved created activity in regions…