Abstract

This section of this volume deals with the study of numerical impairment occurring either after brain damage or during development without any known brain damage. The chapters in this section will report the research aiming at characterizing those difficulties. The study of atypical number processing and calculation in acalculia has contributed importantly to the understanding of how our brain is structured to process number and to calculate. The study of dyscalculia has shed light on the numerical bases for arithmetic learning. This research has also helped us in determining how other cognitive functions such as working memory, visuospatial processing, or phonological awareness have an impact on numerical cognition. These relations between different cognitive domains could partly explain the co-morbidities that are often observed in developmental disorders. Finally, this section also reviews the few attempts that have been made to enhance those numerical capacities.