P. Macaruso et al., THE FUNCTIONAL ARCHITECTURE OF THE COGNITIVE NUMERICAL-PROCESSING SYSTEM - EVIDENCE FROM A PATIENT WITH MULTIPLE IMPAIRMENTS, Cognitive neuropsychology, 10(4), 1993, pp. 341-376
RH, a brain-damaged patient with multiple impairments in numerical pro
cessing, was tested extensively on a set of transcoding tasks in which
numerals were converted from one form to another (e.g. 94 --> ninety-
four). The pattern of error rates across tasks, and the patterns of er
ror types within tasks, support the assumption that numerical processi
ng is mediated by multiple independent numeral comprehension and numer
al production processes that communicate via central semantic represen
tations of numbers (McCloskey, Caramazza, & Basili, 1985).