The designers at New Zealand's Unit Seven created this New Brainland Map that visualizes and, er, maps out various neural regions. They used a reference photo of a human brain to model the 3D terrain. Computer wallpapers of the image are free and large color prints on silk paper are available for US$15-US$70 depending on the size. From the project page:
This digital elevation model was then used to create contour line data, relief shading and to plan where the roads and features should be placed for map compilation. Real New Zealand public domain data was then added for the surrounding islands.