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Published in: Alzheimer's Research & Therapy 1/2015

Open Access 01-12-2015 | Research

Verbal and non-verbal memory and hippocampal volumes in a memory clinic population

Authors: Aaron Bonner-Jackson, Shamseldeen Mahmoud, Justin Miller, Sarah J Banks

Published in: Alzheimer's Research & Therapy | Issue 1/2015

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Abstract

Introduction

Better characterization of the relationship between episodic memory and hippocampal volumes is crucial in early detection of neurodegenerative disease. We examined these relationships in a memory clinic population.

Methods

Participants (n = 226) underwent structural magnetic resonance imaging and tests of verbal (Hopkins Verbal Learning Test-Revised, HVLT-R) and non-verbal (Brief Visuospatial Memory Test-Revised, BVMT-R) memory. Correlational analyses were performed, and analyses on clinical subgroups (i.e., amnestic Mild Cognitive Impairment, non-amnestic Mild Cognitive Impairment, probable Alzheimer’s disease, intact memory) were conducted.

Results

Positive associations were identified between bilateral hippocampal volumes and both memory measures, and BVMT-R learning slope was more strongly positively associated with hippocampal volumes than HVLT-R learning slope. Amnestic Mild Cognitive Impairment (aMCI) participants showed specific positive associations between BVMT-R performance and hippocampal volumes bilaterally. Additionally, analyses of the aMCI group showed trend-level evidence of material-specific lateralization, such that retention of verbal information was positively associated with left hippocampal volume, whereas learning curve and retention of non-verbal information was positively associated with right hippocampal volume.

Conclusions

Findings support the link between episodic memory and hippocampal volumes in a memory clinic population. Non-verbal memory measures also may have higher diagnostic value, particularly in individuals at elevated risk for Alzheimer’s disease.
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Metadata
Title
Verbal and non-verbal memory and hippocampal volumes in a memory clinic population
Authors
Aaron Bonner-Jackson
Shamseldeen Mahmoud
Justin Miller
Sarah J Banks
Publication date
01-12-2015
Publisher
BioMed Central
Published in
Alzheimer's Research & Therapy / Issue 1/2015
Electronic ISSN: 1758-9193
DOI
https://doi.org/10.1186/s13195-015-0147-9

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