Abstract
Technical changes in the field of transport, communication and information technology, together with long-term structural shifts will, in the new century, allow a degree of spatial reorganization of European economic activity. The validity of conventional (spatial) models of peripherality is increasingly questionable. They should be supplemented by more appropriate 'aspatial' concepts. Although many elements of these are already well understood, coherent models and operational indicators are required. These could provide a sound theoretical basis on which to further the European Spatial Development Perspective's polycentric development objective. They could also provide new opportunities for peripheral regions, and relief from 'overheating' at the core.