Decline of frontal lobe functions in subjects with age-associated memory impairment.

Abstract:

OBJECTIVE:To assess frontal lobe functions of subjects with age-associated memory impairment (AAMI) and to examine whether performance on neuropsychological tests is correlated with the volume of the frontal lobes in magnetic resonance imaging. DESIGN:Cross-sectional two-group comparison. SETTING:The Memory Research Clinic of Kuopio University and the Magnetic Resonance Imaging Center of Kuopio University Hospital. PARTICIPANTS:Ninety subjects (mean age, 70.5 years), 43 with AAMI diagnosed according to National Institute of Mental Health criteria and 47 age-matched healthy controls. MEASUREMENTS:Four neuropsychological tests were used to assess frontal lobe function: Verbal Fluency Test (VFT), Modified Wisconsin Card Sorting Test (WCST), Trail Making Test (TMT), and Stroop Test (ST). A 1.5-T magnetic resonance imager was used for volume measurements. RESULTS:The AAMI subjects scored significantly worse on the WCST, ST, and TMT compared with controls (ANCOVA, adjusted for age and education, p < 0.05). The frontal lobe volumes did not differ between AAMI subjects and controls. CONCLUSIONS:AAMI subjects appear to be impaired not only in tests assessing memory but also in tests of executive functions. This finding agrees with previous reports suggesting a central role for frontal dysfunction in memory loss of elderly people.

journal_name

Neurology

journal_title

Neurology

authors

Hänninen T,Hallikainen M,Koivisto K,Partanen K,Laakso MP,Riekkinen PJ Sr,Soininen H

doi

10.1212/wnl.48.1.148

subject

Has Abstract

pub_date

1997-01-01 00:00:00

pages

148-53

issue

1

eissn

0028-3878

issn

1526-632X

journal_volume

48

pub_type

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