Superior view of the cingulum and corpus callosum. Visible from a superior view are the corpus callosum, the thickest band of commissural fibers connecting the cerebral hemispheres. The cingulum is also visible here, a white matter association tract of the limbic system connecting the frontal lobe to the hippocampus and entorhinal cortex within the temporal lobe. The cingulum lies within the cingulate gyrus, just superior to the corpus callosum. (Image courtesy of AL Rhoton, Jr.)