Left Cerebral Hemisphere With Dural and Arachnoidal Layers Removed. I, 1, Inferior limiting sulcus; 2, superior limiting sulcus; 3, anterior limiting sulcus; 4, short insular gyri; 5, long insular gyri; 6, transverse gyrus of Eberstaller; 7, M1 segment of MCA; 8, posterior insular point. (Image courtesy of E de Oliveira)