These appear to be under the control of output from the cerebral cortex. Gyrification is the process of forming the characteristic folds of the cerebral cortex. BA10 is a subdivision of the cytoarchitecturally defined frontal region of cerebral cortex. It is a subdivision of the cytoarchitecturally defined precentral region of cerebral cortex. CB is expressed at high densities in the basal ganglia, cerebellum, hippocampus, and cerebral cortex. The IL projects diffusely to all parts of the cerebral cortex. The motor areas are located in both hemispheres of the cerebral cortex. They are the larger pyramidal cells in the cerebral cortex. Archangelo Piccolomini of Rome was the first to distinguish between the cerebrum and cerebral cortex. This process led to the publication of his book, The Cerebral Cortex of Man. Speech and language are mainly attributed to the parts of the cerebral cortex. The caudate works with the putamen to receive the input from cerebral cortex. IAA produces microcephaly in rats during the early stage of cerebral cortex development. Cobblestone lissencephaly shows a reduction and abnormalities in the grey matter of the cerebral cortex. The cerebellum and cerebral cortex are generally spared.