The term granular cortex is a cytoarchitecturally defined term denoting the type of neocortex that is distinguished by the typical organization of granule cells into an external granular layer (II) and an internal granular layer (IV) ( Carpenter-1983 ). It is distinguished from dysgranular cortex, which has fewer granule cells in a single layer or as distinct clusters, and agranular cortex, which has no granule cells ( Mesulam-1982 ).