Medial view of the right parahippocampal region. The parahippocampal gyrus is the inferomedial gyrus of the temporal lobe containing the uncus (uncinate gyrus). The band of Giacomini represents the inferior surface of the uncus, and the ambiens gyrus is an anatomic prominence of the medial temporal lobe at the rostral part of the parahippocampal gyrus. The semilunar gyrus, another anatomic prominence, covers the cortical nucleus of the amygdala. The optic tract is visible dorsal to the choroidal fissure. On the inferior surface of the temporal lobe, the collateral sulcus separates the medial occipitotemporal gyrus (also known as the fusiform gyrus) from the parahippocampal gyrus. (Image courtesy of AL Rhoton, Jr.)