To understand any study of the human cerebral cortex, it is critical to have a good sense of human cortical neuroanatomy. The classical way to learn neuroanantomy is to memorize the patterns and names of sulci and gyri shown in static photos of slices or volumes. We have developed a simple pycortex viewer that provides a more dynamic, interactive atlas of the sulci and gyri of the human cerebral cortex. The cortical surface can also be inflated and flattened so that the relationship between locations in the original 3D volume and on the flattened cortical surface can be visualized easily. You can find the viewer on our brain viewer page or you can get it directly from here.