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Everyday memory: Self-perception and structural brain correlates in a healthy elderly population

Published online by Cambridge University Press:  15 October 2010

ASTRID BJØRNEBEKK ,
LARS T. WESTLYE ,
KRISTINE B. WALHOVD  and
ANDERS M. FJELL
ASTRID BJØRNEBEKK*
Affiliation:
Department of Psychology, University of Oslo, Norway
LARS T. WESTLYE
Affiliation:
Department of Psychology, University of Oslo, Norway
KRISTINE B. WALHOVD
Affiliation:
Department of Psychology, University of Oslo, Norway Department of Neuropsychology, Ullevål University Hospital, Oslo, Norway
ANDERS M. FJELL
Affiliation:
Department of Psychology, University of Oslo, Norway Department of Neuropsychology, Ullevål University Hospital, Oslo, Norway
*
*Correspondence and reprint requests to: Astrid Bjørnebekk, Department of Psychology, University of Oslo, PoB 1094 Blindern, 0317 Oslo, Norway. E-mail: astrid.bjornebekk@psykologi.uio.no
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Abstract

Mapping the cerebral structural correlates of age-related cognitive decline is a growing area of research. The aim of the present study was to investigate the relationship between healthy elderly’s perceived memory functioning in daily life, neuropsychological test performance on a standardized test on verbal memory, and cortical thickness and subcortical volumes in brain regions implicated in memory networks, including the medial temporal lobe (MTL). Eighty-three healthy and cognitively well-functioning volunteers aged 60–85 years underwent MRI scans, Everyday Memory Questionnaire (EMQ), and neuropsychological assessment. Both self-perceived memory in daily life related to attention and executive functions and an objective measure of verbal recall (CVLT) were, independently, associated with thickness of the left MTL. The two cognitive variables were uncorrelated, and including both measures in the model nearly doubled the amount of explained variance on MTL thickness. This suggests that measures of perceived everyday memory might substantially inform and supplement studies investigating the relationships between neuropsychological test performance and brain morphology. The results are consistent with a bigger-is-better relationship in the MTL and suggest that EMQ and neuropsychological test performance have detectable and comparable structural correlates in a region critically involved in memory functions in the well-functioning elderly. (JINS, 2010, 16, 1115–1126.)

Keywords

MRIMorphometryMemoryTemporal lobesCortical thicknessAging
Type
Research Articles
Information
Journal of the International Neuropsychological Society , Volume 16 , Issue 6 , November 2010 , pp. 1115 - 1126
Copyright
Copyright © The International Neuropsychological Society 2010

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