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Updated: Mar 6, 2026
11:01
Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
Published on: August 30, 2011
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Episodic Memory Dysfunction in Behavioral Variant Frontotemporal Dementia: A Clinical And FDG-PET Study
Marta Fernández-Matarrubia1, Jordi A Matías-Guiu1, María Nieves Cabrera-Martín2
1Department of Neurology, Hospital Clínico Universitario San Carlos, San Carlos Institute for Health Research (IdISSC), Universidad Complutense, Madrid, Spain.
Journal of Alzheimer'S Disease : JAD
|March 18, 2017
Summary
Behavioral variant frontotemporal dementia (bvFTD) can cause significant episodic memory loss, similar to Alzheimer's disease. This memory impairment involves specific brain regions, potentially impacting diagnostic criteria.
Area of Science:
- Neuroscience
- Neurology
- Cognitive Science
Background:
- Episodic memory disturbance is often an exclusion criterion for behavioral variant frontotemporal dementia (bvFTD).
- Emerging evidence suggests that bvFTD patients can exhibit significant memory impairments.
Purpose of the Study:
- To compare episodic memory function in bvFTD patients versus Alzheimer's disease (AD) patients.
- To investigate the relationship between episodic memory performance and brain metabolism in bvFTD using FDG-PET imaging.
Main Methods:
- Included 26 bvFTD patients, 29 AD patients, and 24 healthy controls.
- Assessed episodic memory using the Free and Cued Selective Reminding Test (FCSRT).
- Utilized 18F-fluorodeoxyglucose Positron Emission Tomography (FDG-PET) for brain metabolism analysis.
Main Results:
- Half of bvFTD patients displayed memory deficits comparable to AD patients (amnestic-FTD); the other half showed normal memory (non-amnestic-FTD).
- Amnestic-FTD patients exhibited reduced metabolism in the parahippocampal and inferior temporal gyri compared to non-amnestic-FTD.
- Episodic memory scores (FCSRT) correlated inversely with metabolism in the parahippocampal gyrus (bvFTD and AD) and inferior temporal regions (bvFTD).
Conclusions:
- bvFTD can present with genuine amnesia affecting memory storage and consolidation.
- The memory deficits in bvFTD involve brain structures similar to AD, including the Papez circuit and inferior temporal regions.
- Findings may inform future revisions of diagnostic criteria for bvFTD.
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