Right Hemisphere After Removal of the Frontoparietal Operculum. E, Lateral view of the right insula after removal of the fronto-orbital, frontoparietal, and temporal operculum. 1e3, Superior, inferior, and anterior limiting sulci removed, limiting the insular surface. The 3 short gyri converge at the 4, apex insulae. 5, The 2 long gyri converge at the insular pole, located inferomedial to the insular apex; 6, the M2 insular segment begins at the limen insulae; 7, temporomedial orbital lobe. F, Right insula after removing the fronto-orbital, frontoparietal, and temporal opercula as well as the posterolateral orbital lobule. 1, Anterior short insular gyrus; 2, middle short insular gyrus; 3, posterior short insular gyrus; 4, anterior long insular gyrus; 5, posterior long insular gyrus; *, central sulcus of the insula; 6, apex of the insula; 7, insular pole; 8, transverse gyrus of Eberstaller; 9, inferior limiting sulcus of the insula; 10, anterior limiting sulcus of the insula; 11, superior limiting sulcus of the insula; 12, posteromedial orbital lobule. G, Right insula after removing the fronto-orbital, frontoparietal, and temporal opercula as well as the posterolateral orbital lobule. 1, Anterior short insular gyrus; 2, middle short insular gyrus; 3, posterior short insular gyrus; 4, anterior long insular gyrus; 5, posterior long insular gyrus; *, central sulcus of the insula; 6, apex of the insula; 7, insular pole; 8, transverse gyrus of Eberstaller; 9, inferior limiting sulcus of the insula; 10, anterior limiting sulcus of the insula; 11, superior limiting sulcus of the insula; 12, posteromedial orbital lobule. (Images courtesy of E de Oliveira)