title: Brain damage: neglect disrupts the mental number line.
abstract: A popular metaphor for the representation of numbers in the brain is the 'mental number line', in which numbers are represented in a continuous, quantity-based analogical format. Here we show that patients with hemispatial neglect misplace the midpoint of a numerical interval when asked to bisect it (for example, stating that five is halfway between two and six), with an error pattern that closely resembles the bisection of physical lines. This new form of representational neglect constitutes strong evidence that the mental number line is more than simply a metaphor, and that its spatial nature renders it functionally isomorphic to physical lines.
authors: Dipartimento di Psicologia Generale, Università di Padova, via Venezia 8, 35131 Padova, Italy. marco.zorzi@unipd.it
authors: Marco
authors: M
authors: Zorzi
authors: Konstantinos
authors: K
authors: Priftis
authors: Carlo
authors: C
authors: Umiltà
mesh_terms: D001921:Brain / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D007092:Imagination / Q000502:physiology*; D008433:Mathematics; D010468:Perceptual Disorders / Q000473:pathology / Q000503:physiopathology*