PMID: 8951829Dec 1, 1996Paper

The influence of semantic encoding on recognition memory in Alzheimer's disease

Neuropsychologia
G Dalla Barba, M C Goldblum

Abstract

Within the framework of the distinction between episodic and semantic memory, it has been argued that these two memory systems are organised in a hierarchical way. The hierarchical hypothesis assumes that episodic memory is a specific subsystem of semantic memory and therefore implies that episodic memory cannot exist without semantic memory. If this hypothesis is correct, it should be expected that patients with impaired semantic memory also have impaired episodic memory. In the present study, two experiments investigated the influence of semantic encoding on recognition memory performance in a population of 20 patients with Alzheimer's disease and 18 normal controls. Both experiments assessed recognition memory for semantically-related items. In Experiment 2, but not in Experiment 1, subjects were explicitly instructed to make a semantic association between the items. Alzheimer's disease patients were impaired, compared to the normal controls, on the recognition memory performance of both experiments. The ability to make a semantic association between two items was significantly and positively correlated with the subjects' performance on the recognition tasks. A further analysis showed that patients who were impaired on the s...Continue Reading

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Citations

Jun 14, 2005·Neuropsychologia·R B DudasJ R Hodges
Apr 5, 2012·Cold Spring Harbor Perspectives in Medicine·Sandra WeintraubDavid P Salmon
Oct 26, 2005·Dementia and Geriatric Cognitive Disorders·Wolfgang MackMonika Knopf
May 26, 2001·Clinics in Geriatric Medicine·D P Salmon, K L Lange
May 12, 2009·Brain and Cognition·Liliana Rico DuartePierre-Jean Ousset

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