Fig. 4.

Variation in mass (a) and total number of neurons (b and c) of cerebellum and remaining areas as a function of these values in the cerebral cortex (a and b) and in the other structures (c). Power function exponents are indicated. P < 0.0001 (a) and P = 0.0005 (b and c). Notice that, although cerebellar mass increases at a smaller rate than cerebral cortical mass, the total number of cerebellar neurons grows more rapidly than that in the cerebral cortex.