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Titolo:
Going, going, gone ... ? Implicit and explicit tests of conceptual knowledge in a longitudinal study of semantic dementia
Autore:
Tyler, LK; Moss, HE;
Indirizzi:
Univ London Birkbeck Coll, Dept Psychol, Ctr Speech & Language, London WC1E Univ London Birkbeck Coll London England WC1E 8HX Language, London WC1E Univ Cambridge, Cambridge CB2 1TN, England Univ Cambridge Cambridge England CB2 1TN dge, Cambridge CB2 1TN, England
Titolo Testata:
NEUROPSYCHOLOGIA
fascicolo: 12, volume: 36, anno: 1998,
pagine: 1313 - 1323
SICI:
0028-3932(199812)36:12<1313:GGG.?I>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMANTIC MEMORY; UNCONSCIOUS PERCEPTION; ALZHEIMERS-DISEASE; DEMENTIA; IMPAIRMENT; APHASIA; CATEGORIES; NEOCORTEX; KNOWLEDGE; ACCESS;
Keywords:
semantic memory; priming; disorders;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Tyler, LK Univ London Birkbeck Coll, Dept Psychol, Ctr Speech & Language, London WC1E Univ London Birkbeck Coll London England WC1E 8HX London WC1E
Citazione:
L.K. Tyler e H.E. Moss, "Going, going, gone ... ? Implicit and explicit tests of conceptual knowledge in a longitudinal study of semantic dementia", NEUROPSYCHO, 36(12), 1998, pp. 1313-1323

Abstract

Patients suffering from semantic dementia provide important constraints ontheories of the structure and organisation of semantic memory. In this article we report one such patient, AM, whose progressive deterioration of semantics enables us to address the much-debated issue of whether conceptual structure is hierarchically organised. The hierarchical account predicts that brain damage should impair lower levels of the hierarchy (property information) before affecting higher level (category) information (Warrington andShallice, Q. J. Exp. Psychol. 1975, 27, 635-657). We evaluate this prediction by repeated testing of AM in two studies-a semantic priming task and a verification task-over an 18 month period, contrasting the progressive deterioration of properties (functional and perceptual) and category relations (category co-ordinates and category labels). Properties were preserved longer than category information, arguing against a hierarchical account of semantic memory. In addition, functional properties were most robust to brain damage, supporting our claim that functional information prays a special role in semantic representations (Durrant-Peatfield el al., Proc. 19th Ann. Conf: of the Cognitive Science Society. Erlbaum, Mahwah, NJ, 1997, pp. 193-198. Tyler el al.; Cognitive Neuropsychol. 1997, 14, 511-545). (C) 1998 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 02:21:24