ORBi: Willems Sylvie - Implicit/explicit memory dissociation in Alzheimer's disease: the consequence of inappropriate processing?

Reference : Implicit/explicit memory dissociation in Alzheimer's disease: the consequence of inappro...


	Document type :	Scientific journals : Article
	Discipline(s) :	Social & behavioral sciences, psychology : Neurosciences & behavior
	To cite this reference:	http://hdl.handle.net/2268/6334

Title :	Implicit/explicit memory dissociation in Alzheimer's disease: the consequence of inappropriate processing?
Language :	English
Author, co-author :	Willems, Sylvie [Université de Liège - ULg > Département des sciences cognitives > Psychopathologie cognitive >]
	Salmon, Eric [Université de Liège - ULg > Centre de Recherches du Cyclotron - Département des sciences cliniques > Neuroimagerie des troubles de la mémoire et révalid. cogn. > >]
	Van der Linden, Martial [Université de Liège - ULg > Département des sciences cognitives > Psychopathologie cognitive >]
Publication date :	2008
Journal title :	Neuropsychology
Publisher :	American Psychological Association
Volume :	22
Issue/season :	6
Pages :	710-7
Audience :	International
ISSN :	0894-4105
City :	Washington
Country :	DC
Keywords :	[en] recognition ; priming ; Alzheimer
Abstract :	[en] Dual-process theories of recognition posit that perceptual fluency contributes to both familiarity-based explicit recognition and perceptual priming. However, the priming-without-recognition dissociation, as observed through the intact mere exposure effect and impaired recognition in patients with Alzheimer's disease (AD), might indicate that familiarity and perceptual priming are functionally distinct. This study investigated whether the AD patients' processing strategies at testing may explain this priming-without-recognition dissociation. First, we replicated the priming-without-recognition effect in 16 patients who exhibited intact exposure effects despite null recognition. Second, we showed that, under identical conditions, inducing a holistic processing strategy during recognition testing increased AD patients' recognition--performance was similar for AD patients and healthy control participants. Furthermore, prompting analytic processing during both priming and recognition tasks decreased AD patients' performance in both tasks. These findings suggest that the extent to which AD patients use perceptual fluency in priming and recognition tasks is contingent on their processing approach. The choice of processing strategy may depend on how difficult patients perceive the task to be.
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Permalink :	http://hdl.handle.net/2268/6334
	also: http://hdl.handle.net/2268/33382 ; http://hdl.handle.net/2268/60399
DOI :	10.1037/a0012986

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