Related Experiment Video
Updated: Feb 8, 2026
11:01
Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
Published on: August 30, 2011
14.1K
[Capgras delusion and Alzheimer disease]
Laure Woehrle1, Joseph André Ghika2,3, Martial Coutaz1
1Service de gériatrie, Centre Hospitalier du Valais Romand, Hôpital de Sierre, Rue St-Charles 14, 3960 Sierre.
Revue Medicale Suisse
|June 27, 2018
Summary
Capgras delusion involves misidentifying loved ones as imposters, often linked to dementia and facial recognition deficits (prosopagnosia). Rarely, individuals may experience auto-Capgras delusion, believing they are seeing their own twin.
Area of Science:
- Neurology
- Psychiatry
- Cognitive Neuroscience
Context:
- Capgras delusion is a rare misidentification syndrome.
- It is often associated with neurodegenerative conditions like dementia.
- This syndrome involves a disconnect between facial recognition and emotional processing.
Purpose:
- To describe two cases of Capgras delusion.
- To explore the association between Capgras delusion, cognitive deficits (prosopagnosia), and dementia.
- To review the literature on prevalence, neuroimaging findings, and prognosis of Capgras delusion.
Summary:
- The study presents two cases of Capgras delusion, a misidentification syndrome.
- The first case highlights affective and behavioral reactions to perceived imposter doubles.
- The second case illustrates the rarer auto-Capgras delusion, where individuals misrecognize themselves.
Impact:
- This research sheds light on the complex presentation of Capgras delusion in dementia.
- It underscores the profound impact of this syndrome on patients and their families.
- Understanding Capgras delusion aids in diagnosing and managing cognitive and psychiatric disorders.
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