title: Quantity Cognition: Numbers, Numerosity, Zero and Mathematics.
abstract: Physical quantities differ from abstract numbers and mathematics, but recent results are revealing the neural representation of both: a new study demonstrates how an absence of quantity is transformed into a representation of zero as a number.
authors.affiliation: Faculty of Psychology and Education Sciences, University of Coimbra, Rua do Colégio Novo, 3001-802, Coimbra, Portugal. Electronic address: b.m.harvey@uu.nl.
authors.forename: Ben M
authors.initials: BM
authors.lastname: Harvey
mesh_terms: D003071:Cognition; D006801:Humans; D008433:Mathematics