In my 2-Minute Neuroscience videos I explain neuroscience topics in 2 minutes or less. In this video, I discuss neuroimaging, covering four of the most common types of neuroimaging: computerized axial tomography (CAT), magnetic resonance imaging (MRI), positron emission tomography (PET), and functional magnetic resonance imaging (fMRI). CAT and MRI are methods of imaging the structure of the brain while PET and fMRI are methods of imaging the activity or function of the brain.