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Updated: May 23, 2026

Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
Published on: August 26, 2011
[Reduplicative paramnesia: neuroanatomical perspective on a psychiatric phenomenon]
A stroke in the right thalamus caused a 76-year-old man to experience reduplicative paramnesia, a rare delusional misidentification disorder where he failed to recognize his own home.
Area of Science:
- Neuroscience
- Neurology
- Psychiatry
Background:
- Reduplicative paramnesia is a rare delusional misidentification disorder.
- This condition is often associated with underlying neurological diseases.
- It presents as a neuropsychiatric phenomenon with complex underlying mechanisms.
Purpose of the Study:
- To present an extraordinary case of reduplicative paramnesia.
- To identify the neuroanatomical cause of this specific case.
- To discuss the clinical features and mechanisms of reduplicative paramnesia.
Main Methods:
- Case report of a 76-year-old male patient.
- Clinical assessment of delusional misidentification.
- Neuroimaging to identify the affected brain region (stroke in the right thalamus).
Main Results:
- The patient exhibited reduplicative paramnesia, failing to recognize his own house.
- The cause was identified as a stroke affecting the anterior nuclei of the right thalamus.
- This case highlights the link between thalamic lesions and delusional misidentification.
Conclusions:
- Stroke in the right thalamus can lead to reduplicative paramnesia.
- Reduplicative paramnesia is a significant neuropsychiatric symptom.
- Understanding the neuroanatomy is crucial for diagnosing and managing such disorders.
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