2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/161894It is assumed that the digital-like spatio-time brain activity might be caused by non-topological transformations of patterns in the cortex which is a linear, analog and active system. Such an effect can be modeled by topologically modulated spatio-time electromagnetic signals which theory is proposed in this paper. The logical operations are performed by passive components, and a theory of them is considered. Two gates of this sort are simulated. A short review on semiconductor hardware for this type of spatial digital processing and computing is given.6 pages,6 figures, submitted to 12th WSEAS Int. Conf. CSCC'2008, GreeceComputational PhysicsGeneral Physicstext