fMRI is a wildly popularly neuroimaging technique used in research and medicine, and it recently passed its 20th birthday. Very simply, fMRI measures the flow of blood by controlling the magnetic field which can affect the iron carried by your blood; from there you can tell what blood is iron rich and what is iron depleted and rom there you can determine the flow of blood. The general idea is that brain areas that are “active” require more blood, so blood will flow there and show up “BOLD.” If you are a physicist, please excuse my shaky explanation.
Read on for Mind Hacks’s history on fMRI: (more…)




