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Titolo:
Language and calculation within the parietal lobe: a combined cognitive, anatomical and fMRI study
Autore:
Cohen, L; Dehaene, S; Chochon, F; Lehericy, S; Naccache, L;
Indirizzi:
Hop La Pitie Salpetriere, Clin Paul Castaigne, Serv Neurol 1, F-75651 Paris 13, France Hop La Pitie Salpetriere Paris France 13 rol 1, F-75651 Paris 13, France CEA, DSV, Serv Hosp Frederic Joliot, INSERM U334, Orsay, France CEA Orsay France Serv Hosp Frederic Joliot, INSERM U334, Orsay, France Hop La Pitie Salpetriere, Serv Neuroradiol, F-75651 Paris, France Hop La Pitie Salpetriere Paris France F-75651 iol, F-75651 Paris, France
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 10, volume: 38, anno: 2000,
pagine: 1426 - 1440
SICI:
0028-3932(2000)38:10<1426:LACWTP>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ARITHMETIC FACTS; HUMAN INFANTS; PURE ALEXIA; ORGANIZATION; SUBTRACTION; BRAIN; LESION; LOCALIZATION; DISSOCIATION; ACTIVATIONS;
Keywords:
aphasia; acalculia; Gerstmann's syndrome; dyslexia; imaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Cohen, L Hop La Pitie Salpetriere, Clin Paul Castaigne, Serv Neurol 1, 47-83 Bd Hop, F-75651 Paris 13, France Hop La Pitie Salpetriere 47-83 Bd Hop Paris France 13 13, France
Citazione:
L. Cohen et al., "Language and calculation within the parietal lobe: a combined cognitive, anatomical and fMRI study", NEUROPSYCHO, 38(10), 2000, pp. 1426-1440

Abstract

We report the case of a patient (ATH) who suffered from aphasia, deep dyslexia, and acalculia, following a lesion in her left perisylvian area. She showed a severe impairment in all tasks involving numbers in a verbal format, such as reading aloud, writing to dictation, or responding verbally to questions of numerical knowledge. In contrast, her ability to manipulate nonverbal representations of numbers, i.e., Arabic numerals and quantities, wascomparatively well preserved, as evidenced for instance in number comparison or number bisection tasks. This dissociated impairment of verbal and non-verbal numerical abilities entailed a differential impairment of the four arithmetic operations. ATH performed much better with subtraction and addition, that can be solved on the basis of quantity manipulation, than with multiplication and division problems, that are commonly solved by retrieving stored verbal sequences. The brain lesion affected the classical language areas, but spared a subset of the left inferior parietal lobule that was active during calculation tasks, as demonstrated with functional MRI. Finally,the relative preservation of subtraction versus multiplication may be related to the fact that subtraction activated the intact right parietal lobe, while multiplication activated predominantly left-sided areas. (C) 2000 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 00:50:00