MEDICINE Special Feature 1 – Brain, Body, and Mind Visualizing brain activity with fMRI With psychiatric disorders rising by the year, there is an urgent need for measures to address them as a social issue, as they also have a substantial economic impact. Unlike blood glucose levels, blood pressure, and other useful biological markers, there are no objective measurements of such disorders, so no effective and revolutionary cures have yet been established. However, it would be fair to say that therapies have entered a new stage with the widespread use of MRI and the emergence of a more advanced technique called fMRI (Functional MRI), which enables brain circuits and their activity to be visualized in real time.