however , in these regions the areas of lowest threshold in the mesencephalon generally corresponded to the ventrolateral pag and adjacent nucleus cuneiformis and part of the lateral reticular formation ( lrf ) and in the caudal brainstem they corresponded to nrm and the adjacent nuclei reticularis magnocellularis ( rmc ) and gigantocellularis ( rgc ) .
C0025462
mesencephalon
C0006121
brainstem