Conceptual Priming in Perceptual Identification for Patients With Alzheimer's Disease and a Patient With Right Occipital Lobectomy

Debra A. Fleischman*, John D E Gabrieli, Sheryl Reminger, Julie Rinaldi, Frank Morrell, Robert Wilson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

Two experiments examined explicit recognition memory and perceptual and conceptual contributions to implicit perceptual-identification repetition priming for patients with Alzheimer's disease (AD) and Patient M.S. with right-occipital lobectomy. Participants read words (perceptual encoding) and generated words (conceptual encoding) from a definition and letter cue (e.g., "a vehicle for moving the injured-a"). AD patients demonstrated impaired explicit and intact implicit memory for both perceptually and conceptually encoded words. M.S. demonstrated the opposite pattern: intact explicit and impaired implicit memory in both encoding conditions. The double dissociation between AD and M.S. on implicit and explicit memory tasks is discussed in terms of a putative visual memory mechanism in the right-occipital cortex that interacts with lexical mechanisms to yield perceptual-identification priming after perceptual and conceptual encoding.

Original languageEnglish (US)
Pages (from-to)187-197
Number of pages11
JournalNeuropsychology
Volume9
Issue number2
DOIs
StatePublished - Jan 1 1995

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology

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