In computational experiments with a simplified cortical array we investigated the factors that give rise to the functional organization of the cerebral cortex during brain development. We show that a dynamical spatial modulation of plasticity in the substrate (i.e., a "wave of plasticity") induces higher functional development in the later-developing parts of the cortical array. This result suggests an account of the role that changes in developmental timing may have in the development of different cortical structures. Copyri