Cognitive support at episodic encoding and retrieval: Similar patterns of utilization in community-based samples of Alzheimer's disease and vascular dementia patients
O. Almkvist et al., Cognitive support at episodic encoding and retrieval: Similar patterns of utilization in community-based samples of Alzheimer's disease and vascular dementia patients, J CL EXP N, 21(6), 1999, pp. 816-830
Citations number
78
Categorie Soggetti
Psycology,Neurology
Journal title
JOURNAL OF CLINICAL AND EXPERIMENTAL NEUROPSYCHOLOGY
The hypothesis that Alzheimer's disease (AD) and vascular dementia (VaD) di
ffer in the pattern of episodic memory was examined in this study. Demented
patients with AD and VaD and normal old adults were assessed on episodic m
emory tasks, including free recall and recognition of slowly and rapidly pr
esented unrelated words and free and cued recall of organizable words. Resu
lts showed a general deficit in both demented groups across all memory vari
ables, although the AD and VaD patients were indistinguishable across all m
easures. The normal old showed proficient utilization of more study time, o
rganizability, and category cues. By contrast, the AD and VaD patients were
able to benefit from cognitive support only when guidance was provided at
both encoding and retrieval. In addition, in the normal old, recall of unre
lated words was characterized by a relatively equal contribution from prima
ry and secondary memory, whereas the demented patients relied predominantly
on primary memory. The results suggests a similarity between AD and VaD pa
tients with regard to the nature of the episodic memory impairment, despite
etiologic differences between the diseases.