Aparato Locomotor



Implicit and explicit memory deficit in Alzheimer and Vascular Dementias

Manzanero A. L.

Departamento de Psicología Básica I Facultad de Psicología. Universidad Complutense de Madrid.

The aim of this article is to elaborate a diagnostic test to discriminate the different degrees of mnesic impairment in patients with Alzheimer disease and other dementia.

A first approach to the assessment of Alzheimer patient's performance, in comparison with vascular dementia patients' and control subjects, was carried out. It consisted in a group of implicit memory tests (conceptual priming and perceptual priming) and explicit ones (free recall, cued recall, recognition and semantic memory). All of them had a visual design and needed no previous alphabetization. It was administrated to three groups of subjects: Alzheimer patients, Vascular Dementia patients and control subjects, equal in age and intellectual level.

The analysis of the obtained data shows significant effects depending on the type of disease in the tests of free recall, cued recall, recognition and semantic memory. On the contrary, the tests of implicit memory, perceptual priming and conceptual priming do not show differences, due to intra-group variability.

These preliminary data allow us cherish hopes towards the goodness of the test for the differential diagnosis between various types of dementia and the control group, although not yet among the former. To proceed with the development of the test, a more specific medical diagnosis will be necessary, as well as the adaptation of some of its formal procedures in order to facilitate the administration.


Antonio L. Manzanero Departamento de Psicología Básica I, Facultad de Psicología, Universidad Complutense de Madrid. Campus de Somosaguas. 28223. Madrid.

MAPFRE MEDICINA, 2007; 18 Supl. I: 34-38

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