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Titolo:
SEMANTIC CATEGORY DISSOCIATIONS IN NAMING - IS THERE A GENDER EFFECT IN ALZHEIMERS-DISEASE
Autore:
LAIACONA M; BARBAROTTO R; CAPITANI E;
Indirizzi:
FDN CLIN LAVORO,SERV NEUROPSICOL,IST RICOVERO & CURA CARATTERE SCI,CTR MED RIABILITAZ VERUNO I-28010 VERONA NO ITALY S MAUGERI FDN,IRCCS,REHABIL INST VERUNO,DIV NEUROL,NEUROPSYCHOL UNIT NOVARA ITALY IST DISABILI PSICH MILAN ITALY UNIV MILAN,SAN PAOLO HOSP,CLIN NERVOUS DIS MILAN ITALY
Titolo Testata:
Neuropsychologia
fascicolo: 5, volume: 36, anno: 1998,
pagine: 407 - 419
SICI:
0028-3932(1998)36:5<407:SCDIN->2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
HERPES-SIMPLEX ENCEPHALITIS; MEMORY IMPAIRMENT; NONLIVING THINGS; KNOWLEDGE; DEMENTIA; FAMILIARITY; DIAGNOSIS; DISORDER; DEFICIT;
Keywords:
ALZHEIMERS DISEASE; NAMING; SEMANTIC CATEGORIES; GENDER EFFECT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
M. Laiacona et al., "SEMANTIC CATEGORY DISSOCIATIONS IN NAMING - IS THERE A GENDER EFFECT IN ALZHEIMERS-DISEASE", Neuropsychologia, 36(5), 1998, pp. 407-419

Abstract

Several studies on picture naming in Alzheimer's disease have reported inconsistent findings regarding semantic category dissociation. To clarify this point, 26 patients suffering from dementia of the Alzheimer's type (DAT) were given a naming task, based on 60 black and white drawings, which allowed us to take into account several variables that might influence performance, notably word frequency, stimulus familiarity and prototypicality, name and image agreement and visual complexity. On a raw analysis, DAT patients as a group gave a lower performancewith stimuli of Living Categories (LC) than with stimuli of Non-Living Categories (NLC), but when all the confounding factors were taken into account the category effect disappeared. Nevertheless, with a multiple single case approach: some patients presented a true dissociation:11 were significantly better with Non-Living stimuli, and 3 with Living stimuli. In order to find what factors were involved in determiningthis distribution, we took the distribution of asymmetry indices of each patient, and plotted the individual category effect against the level of the general performance. In our sample, the distribution of asymmetry indices was skewed, and included a definite cluster of male subjects who were better at performing with Non-Living stimuli. Multivariate analysis suggested that the greater discrepancy shown by male patients was due to a protection acting on Non-Living stimuli rather than to a selective hampering of Living stimuli. The greater personal experience of males with Non-Living things could explain the relative preservation of these In male DAT subjects. (C) 1998 Elsevier Science Ltd. All rights reserved.

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Documento generato il 25/09/20 alle ore 15:38:01