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Titolo:
DIMENSIONALITY AND CLUSTERING IN THE SEMANTIC NETWORK OF PATIENTS WITH ALZHEIMERS-DISEASE
Autore:
CHAN AS; BUTTERS N; SALMON DP; MCGUIRE KA;
Indirizzi:
VET AFFAIRS MED CTR,PSYCHOL SERV 116B,3350 LA JOLLA VILLAGE DR SAN DIEGO CA 92161 SAN DIEGO STATE UNIV,DEPT PSYCHOL SAN DIEGO CA 92182 UNIV CALIF SAN DIEGO,SCH MED,DEPT PSYCHIAT LA JOLLA CA 92093 UNIV CALIF SAN DIEGO,SCH MED,DEPT NEUROSCI LA JOLLA CA 92093 UNIV MINNESOTA,DEPT PSYCHOL MINNEAPOLIS MN 55455
Titolo Testata:
Psychology and aging
fascicolo: 3, volume: 8, anno: 1993,
pagine: 411 - 419
SICI:
0882-7974(1993)8:3<411:DACITS>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUNTINGTONS-DISEASE; WORD-ASSOCIATION; MEMORY; DEMENTIA; KNOWLEDGE; RANKING; TASKS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social Sciences Citation Index
Social Sciences Citation Index
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
A.S. Chan et al., "DIMENSIONALITY AND CLUSTERING IN THE SEMANTIC NETWORK OF PATIENTS WITH ALZHEIMERS-DISEASE", Psychology and aging, 8(3), 1993, pp. 411-419

Abstract

The organization of semantic memory in patients with Alzheimer's disease (AD) was investigated with a triadic comparison task. A multidimensional scaling statistic was used to analyze proximity data and to generate 3-dimensional cognitive maps that were then compared by a discriminant function analysis. The results suggest that the structure of semantic memory in AD patients differs from that of elderly normal controls (NC) in 2 ways. First, AD patients are less consistent in using the attributes (predation, domesticity, and size) of concepts. Second, AD patients focus primarily on concrete perceptual information (size), whereas NC Ss stress abstract conceptual knowledge (domesticity). These results are consistent with the notion that AD is characterized by abreakdown in the structure of semantic knowledge.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/01/20 alle ore 01:05:03