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Confabulation in Alzheimer’s disease and amnesia: A qualitative account and a new taxonomy

Published online by Cambridge University Press:  15 October 2010

VALENTINA LA CORTE ,
MARA SERRA ,
EVE ATTALI ,
MARIE-FRANÇOISE BOISSÉ  and
GIANFRANCO DALLA BARBA
VALENTINA LA CORTE
Affiliation:
Centre de Recherche de l’Institut du Cerveau et de la Moelle épinière, UMR-S975, Université Pierre et Marie Curie-Paris, Paris, France Inserm, U975, Paris, France
MARA SERRA
Affiliation:
Dipartimento di Psicologia, Università degli Studi di Trieste, Trieste, Italy
EVE ATTALI
Affiliation:
Centre de Recherche de l’Institut du Cerveau et de la Moelle épinière, UMR-S975, Université Pierre et Marie Curie-Paris, Paris, France Inserm, U975, Paris, France
MARIE-FRANÇOISE BOISSÉ
Affiliation:
Service de Neurologie, AP-HP, Hôpital Henri Mondor, Créteil, France
GIANFRANCO DALLA BARBA*
Affiliation:
Centre de Recherche de l’Institut du Cerveau et de la Moelle épinière, UMR-S975, Université Pierre et Marie Curie-Paris, Paris, France Inserm, U975, Paris, France Dipartimento di Psicologia, Università degli Studi di Trieste, Trieste, Italy Service de Neurologie, AP-HP, Hôpital Henri Mondor, Créteil, France
*
*Correspondence and reprint requests to: Gianfranco Dalla Barba, INSERM U. 975, Pavillon Claude Bernard, Hôpital de la Salpêtrière, 47, bd de l’Hôpital, 75013 Paris, France. Email: [email protected]
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Abstract

Clinical and experimental observation have shown that patients who confabulate, especially but not exclusively when provoked by specific questions, retrieve personal habits, repeated events or over-learned information and mistake them for actually experienced, specific, unique events. Accordingly, the aim of this study is to characterize and quantify the relative contribution of this type of confabulation, which we refer to as Habits Confabulation (HC), to confabulations produced by 10 mild Alzheimer’s disease (AD) patients and 8 confabulating amnesics (CA) of various etiologies. On the Confabulation Battery (Dalla Barba, 1993a, Dalla Barba & Decaix, 2009), a set of questions involving the retrieval of various kinds of semantic and episodic information, patients produced a total of 424 confabulation. HC accounted for 42% and 62% of confabulations in AD patients and CA, respectively. This result indicates that, regardless the clinical diagnosis, the brain pathology or their lesion’s site, confabulation largely reflects the individuals’ tendency to consider habits, routines, and over-learned information as unique episodes. These results are discussed in the framework of the Memory Consciousness and Temporality Theory (Dalla Barba, 2002). (JINS, 2010, 16, 967–974.)

Keywords

ConfabulationMemoryConsciousnessTimeMemory disorderEpisodic memory
Type
Symposia
Information
Journal of the International Neuropsychological Society , Volume 16 , Issue 6 , November 2010 , pp. 967 - 974
Copyright
Copyright © The International Neuropsychological Society 2010

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