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Updated: Dec 28, 2025

Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
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Confabulations on Time: Relationship between Confabulations and Timing Deviations in Alzheimer's Disease
Mohamad El Haj1,2,3, Frank Larøi4,5
1Laboratoire de Psychologie des Pays de la Loire (LPPL - EA 4638), Nantes Université, Univ Angers, F-44000 Nantes, France.
Objectives:
We investigated the relationship between confabulations and the ability to process chronological characteristics of memories in Alzheimer's Disease (AD).
Methods:
We evaluated provoked confabulations, spontaneous confabulations, and time perception in 31 AD patients. We evaluated provoked confabulations with questions probing general and personal knowledge. We evaluated spontaneous confabulations with a scale rated by nursing and medical staff. Regarding time perception, we invited the participants to perform a simple ongoing activity (i.e., deciding whether words were abstract or concrete), in order to provide a verbal estimation of the elapsed time intervals.
Results:
We observed significant positive correlations between provoked/spontaneous confabulations and deviations in time estimation on the time perception task.
Conclusions:
These findings demonstrate a relationship between confabulations in AD and difficulties in processing the chronological characteristics of elapsed events.
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