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Titolo:
THE NEUROCOGNITIVE BASIS OF WORD-FINDING DIFFICULTY IN ALZHEIMERS-DISEASE
Autore:
CROWE SF; DINGJAN P; HELME RD;
Indirizzi:
LA TROBE UNIV,SCH PSYCHOL BUNDOORA VIC 3083 AUSTRALIA NATL AGEING RES INST MELBOURNE VIC AUSTRALIA
Titolo Testata:
Australian psychologist
fascicolo: 2, volume: 32, anno: 1997,
pagine: 114 - 119
SICI:
0005-0067(1997)32:2<114:TNBOWD>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
ADULT READING TEST; SEMANTIC MEMORY; NAMING DISORDER; SENILE DEMENTIA; DEFICIT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
S.F. Crowe et al., "THE NEUROCOGNITIVE BASIS OF WORD-FINDING DIFFICULTY IN ALZHEIMERS-DISEASE", Australian psychologist, 32(2), 1997, pp. 114-119

Abstract

Past research has indicated that deficits in the areas of visual perception, semantic memory, and word availability may each underlie the word-finding difficulty observed in dementia of the Alzheimer type. This study attempted to evaluate the independent contribution of deficitsin each of these cognitive domains to naming ability in a single sample of patients. In comparison to a group of age- and sex-matched normal controls, performance by the mid to moderate Alzheimer patients indicated deficits in all three functional areas. Using multiple linear regression, with dementia severity, knowledge of word meaning, and visuoperceptual processing as predictors, 59.6% of naming variance was accounted for. However, after controlling for the nonspecific effects of dementia on naming, knowledge of word meaning remained as the only specific deficit which continued to predict naming accuracy. Measures of visual perception and word availability were independent of naming ability. The results were interpreted as indicating that in the mild to moderate stages of disease progression, dysnomia is a sensitive index ofthe generalised effects of dementia with a specific component due to impairment in semantic memory, which is independent of visuo-perceptual and word-availability processes.

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Documento generato il 26/01/20 alle ore 01:03:11