par Fias, Wim;van Dijck, Jean-Philippe;Gevers, Wim 
Référence Space, Time and Number in the Brain: Searching for the Foundations of Mathematical Thought, Elsevier, page (133-148)
Publication Publié, 2011-05
Référence Space, Time and Number in the Brain: Searching for the Foundations of Mathematical Thought, Elsevier, page (133-148)
Publication Publié, 2011-05
Partie d'ouvrage collectif
| Résumé : | This chapter reviews recent evidence on number bisection bias in neglect and on the Spatial Numerical Association of Response Codes (SNARC) effect challenging the homeomorphic relationship between numerical and spatial processing. The parallelism between number interval bisection and physical line bisection in neglect offers a high degree of face validity to the mental number line hypothesis. Just like patients ignore the left side of physical space and, therefore, produce a rightward bias in line bisection, the patients are assumed to ignore the left side of the number line which then leads to a bisection towards the right side of the number line where the large numbers are located. First, the spatial response code that is associated to numbers does not seem to be of a visuospatial nature but is rather situated at the level of conceptual categories. Second, serial position in working memory is the primary determinant of associations with response codes, not numerical magnitude. |
