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Updated: May 3, 2026

Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
Published on: August 30, 2011
Visuo-perceptive priming in Alzheimer's disease: evidence for a multi-componential implicit memory system
Maddalena Boccia1, Maria Caterina Silveri2, Cecilia Guariglia1
1Dipartimento di Psicologia, Universitá La Sapienza, Rome, Italy Unitá di Neuropsicologia, IRCCS Fondazione Santa Lucia, Roma, Italy.
Visuo-perceptual priming is impaired in Alzheimer's disease (AD), contrary to expectations. This study found that individuals with AD showed deficient priming effects in a fragmented picture identification task, suggesting specific deficits in implicit memory.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurology
Background:
- Alzheimer's disease (AD) is characterized by explicit memory deficits.
- Implicit memory processes are often spared in AD.
- Recent research suggests dissociations among different implicit memory types.
Purpose of the Study:
- To investigate whether visuo-perceptual priming is spared in Alzheimer's disease (AD).
- To examine the impact of AD on implicit memory, specifically visuo-perceptual priming.
Main Methods:
- A visuo-perceptual priming task involving the identification of fragmented pictures was administered.
- Two groups participated: Alzheimer's disease patients and healthy age-matched controls.
Main Results:
- Alzheimer's disease patients exhibited a deficient priming effect.
- The priming deficit was observed in the Identification of Fragmented Pictures task.
Conclusions:
- Visuo-perceptual priming, as measured by this task, is not spared in Alzheimer's disease.
- Findings support hypotheses of functional segregation within priming processes in neurodegenerative disorders.
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