The residual calculation abilities of a patient with severe aphasia:: Evidence for a selective deficit of subtraction procedures

Marco Sandrini; Antonio Miozzo; Maria Cotelli; Stefano F Cappa

The residual calculation abilities of a patient with severe aphasia: Evidence for a selective deficit of subtraction procedures

Marco Sandrini, Antonio Miozzo, Maria Cotelli, Stefano F Cappa

School of Psychology

Research output: Contribution to journal › Article › peer-review

Abstract

We report the case study of a severe fluent aphasic patient, who showed relatively preserved numerical abilities. A detailed investigation of number processing indicated good numerical comprehension and a relative sparing of addition and subtraction abilities; on the other hand, multiplication and division were severely impaired. A further study of multi-digit operations showed that the patient's performance was characterized by a selective impairment of the borrowing procedure, in which she applied the so-called Smaller-from-Larger bug, typically observed in children learning to calculate. The present case provides further evidence for the dissociation between operations based on verbal sequences and on quantity manipulation, respectively impaired and preserved in patients with severe aphasia. Moreover, it provides evidence indicating that procedures may be dissociated from conceptual knowledge within a single arithmetical operation.

Original language	English
Pages (from-to)	85-96
Number of pages	12
Journal	Cortex
Volume	39
Issue number	1
Publication status	Published - Feb 2003

Keywords

Aphasia
Female
Humans
Language
Mathematics
Middle Aged
Neuropsychological Tests
Severity of Illness Index
Tomography, X-Ray Computed

Cite this

@article{1ce540c2b0bd431a9ab74edf1d56c0f8,

title = "The residual calculation abilities of a patient with severe aphasia:: Evidence for a selective deficit of subtraction procedures",

abstract = "We report the case study of a severe fluent aphasic patient, who showed relatively preserved numerical abilities. A detailed investigation of number processing indicated good numerical comprehension and a relative sparing of addition and subtraction abilities; on the other hand, multiplication and division were severely impaired. A further study of multi-digit operations showed that the patient's performance was characterized by a selective impairment of the borrowing procedure, in which she applied the so-called Smaller-from-Larger bug, typically observed in children learning to calculate. The present case provides further evidence for the dissociation between operations based on verbal sequences and on quantity manipulation, respectively impaired and preserved in patients with severe aphasia. Moreover, it provides evidence indicating that procedures may be dissociated from conceptual knowledge within a single arithmetical operation.",

keywords = "Aphasia, Female, Humans, Language, Mathematics, Middle Aged, Neuropsychological Tests, Severity of Illness Index, Tomography, X-Ray Computed",

author = "Marco Sandrini and Antonio Miozzo and Maria Cotelli and Cappa, {Stefano F}",

year = "2003",

month = feb,

language = "English",

volume = "39",

pages = "85--96",

journal = "Cortex",

issn = "0010-9452",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - The residual calculation abilities of a patient with severe aphasia:

T2 - Evidence for a selective deficit of subtraction procedures

AU - Sandrini, Marco

AU - Miozzo, Antonio

AU - Cotelli, Maria

AU - Cappa, Stefano F

PY - 2003/2

Y1 - 2003/2

N2 - We report the case study of a severe fluent aphasic patient, who showed relatively preserved numerical abilities. A detailed investigation of number processing indicated good numerical comprehension and a relative sparing of addition and subtraction abilities; on the other hand, multiplication and division were severely impaired. A further study of multi-digit operations showed that the patient's performance was characterized by a selective impairment of the borrowing procedure, in which she applied the so-called Smaller-from-Larger bug, typically observed in children learning to calculate. The present case provides further evidence for the dissociation between operations based on verbal sequences and on quantity manipulation, respectively impaired and preserved in patients with severe aphasia. Moreover, it provides evidence indicating that procedures may be dissociated from conceptual knowledge within a single arithmetical operation.

AB - We report the case study of a severe fluent aphasic patient, who showed relatively preserved numerical abilities. A detailed investigation of number processing indicated good numerical comprehension and a relative sparing of addition and subtraction abilities; on the other hand, multiplication and division were severely impaired. A further study of multi-digit operations showed that the patient's performance was characterized by a selective impairment of the borrowing procedure, in which she applied the so-called Smaller-from-Larger bug, typically observed in children learning to calculate. The present case provides further evidence for the dissociation between operations based on verbal sequences and on quantity manipulation, respectively impaired and preserved in patients with severe aphasia. Moreover, it provides evidence indicating that procedures may be dissociated from conceptual knowledge within a single arithmetical operation.

KW - Aphasia

KW - Female

KW - Humans

KW - Language

KW - Mathematics

KW - Middle Aged

KW - Neuropsychological Tests

KW - Severity of Illness Index

KW - Tomography, X-Ray Computed

M3 - Article

C2 - 12627755

SN - 0010-9452

VL - 39

SP - 85

EP - 96

JO - Cortex

JF - Cortex

IS - 1

ER -