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Titolo:
ON THE STATUS OF OBJECT CONCEPTS IN APHASIA
Autore:
CHERTKOW H; BUB D; DEAUDON C; WHITEHEAD V;
Indirizzi:
CTR HOSP COTE DES NEIGES,CTR RECH,4565 CHEMIN DE LA REINE MARIE MONTREAL PQ H3W 1W5 CANADA MCGILL UNIV,DEPT NEUROL & NEUROSURG MONTREAL PQ H3A 2T5 CANADA SIR MORTIMER B DAVIS JEWISH HOSP,BLOOMFIELD CTR AGING MONTREAL PQ CANADA MONTREAL NEUROL INST,NEUROLINGUIST GRP MONTREAL PQ CANADA SIR MORTIMER B DAVIS JEWISH HOSP,LADY DAVIS RES INST MONTREAL PQ CANADA
Titolo Testata:
Brain and language
fascicolo: 2, volume: 58, anno: 1997,
pagine: 203 - 232
SICI:
0093-934X(1997)58:2<203:OTSOOC>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMANTIC MEMORY; AUDITORY COMPREHENSION; IMPAIRMENT; DISORDERS; KNOWLEDGE; DEMENTIA; LANGUAGE; ACCESS; CLASSIFICATION; HYPOTHESIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Citazioni:
87
Recensione:
Indirizzi per estratti:
Citazione:
H. Chertkow et al., "ON THE STATUS OF OBJECT CONCEPTS IN APHASIA", Brain and language, 58(2), 1997, pp. 203-232

Abstract

While verbal comprehension is often impaired in aphasia due to left hemispheric damage, the status of nonverbal conceptual knowledge of objects remains controversial. We tested 16 aphasic subjects for their comprehension of concrete single words. Eight showed significant impairment on word-to-picture matching, when distracters were semantically and not just perceptually confusable. These 8 also made errors in answering verbal probe questions concerning the same items. When tested on anonverbal pictorial version of the same probe questions, however, 3 of these 8 improved their performance to the level of normal controls. The other 5 showed continuing impairment in indicating responses to pictorial probes. These 5 showed no evidence of generalized intellectualimpairment, and it is concluded that they demonstrated a comprehension deficit not limited to the verbal domain. Unlike the other aphasic patients, these latter 5 also had CT scan lesions extending into the posterior left temporal lobe (involving Brodmann's areas 22, 21, and 37). They were also more impaired in terms of general aphasia severity. It is suggested that a nonverbal (as well as verbal) semantic memory deficit occurs in a subgroup of patients with single word comprehension disturbance due to aphasia, and this may reflect general severity of language impairment as well as damage to certain localized brain regions. (C) 1997 Academic Press.

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Documento generato il 30/11/20 alle ore 19:51:15