It’s often said that the human brain is the most intricate structure in the known universe. That may or may not be true—whale and dolphin brains are pretty amazing, too. But thanks to major advances in imaging and neuromodulation technologies, we do know much more about the brain’s workings, and its failings, than we did just a few years ago.
Using tools like functional MRI and transcranial magnetic stimulation, for example, neuroscientists are able to …