Brain scans using fMRI (functional magnetic resonance imaging) don’t always get a lot of respect. They have been accused of being used to produce research that is colorful but not particularly insightful. One study used fMRI to find activity in the brains of dead salmon (Are Brain Scan Findings Fishy?). Some have even suggested that much of what fMRI scans show is meaningless “chaff,” since the scans don’t measure actual neuronal activity but rather changes in blood flow and oxygen levels in the brain. Now, new research published in Nature has shown that there is indeed a correlation between neuronal activity and what the fMRI can measure: […]