Lateral dissection of the peri-insular region.  In this view, the insular cortex, extreme capsule and claustrum have been removed to expose the external capsule.  The external capsule contains corticocortical association fibers that interconnect the frontoparietal operculum with other parietal cortical areas.  Deep to the external capsule lies the putamen.  Most of the putamen has been removed in this dissection in order to expose the more medially-placed globus pallidus.  Medial to the globus pallidus can be seen the vertically-oriented fibers of the internal capsule.  The internal capsule is continuous dorsally with the corona radiata. (Image courtesy of AL Rhoton, Jr.)