Priftis, K. 1, 2 , Umiltà, C. 1 & Zorzi, M. 1
1 Department of General Psychology, University of Padova, Italy
2 IRCCS, San Camillo Hospital, Lido-Venice, Italy
We aim to provide a critical overview of the evidence that links spatial representation
with the representation of number magnitude. This aim is achieved by reviewing critically the literature concerning the mental number
interval bisection and related tasks in patients with left hemispatial neglect and in healthy participants (pseudoneglect). Finally, we shall consider some alternative, non-spatial explanations of the reviewed effects. We conclude that evidence from neglect and pseudoneglect might constitute the strongest evidence in favour of a left-to-right oriented mental number line for representing number magnitude in the human brain.