Dissociation between two forms of conceptual priming in Alzheimer’s disease.

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Patients with Alzheimer’s disease (AD) and healthy control participants performed 2 conceptual repetition priming tasks, word-associate production and category-exemplar production. Both tasks had identical study-phases of reading target words aloud, had the most common responses as target items, and required production of a single response. Patients with AD showed normal priming on word-associate production but impaired priming on category-exemplar production. This dissociation in AD suggests that conceptual priming is not a unitary form of memory but rather is mediated by separable memory systems.

Source: Neuropsychology 1999 Oct;13(4):516-24

PMID: 10527059, UI: 99454183

(Department of Psychology, Stanford University, California 94305, USA. vaidya@psych.stanford.edu)

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