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Published in: Neuropsychology Review 1/2021

Open Access 01-03-2021 | Stroke | Review

Post-Stroke Working Memory Dysfunction: A Meta-Analysis and Systematic Review

Authors: Selma Lugtmeijer, Nikki A. Lammers, Edward H. F. de Haan, Frank-Erik de Leeuw, Roy P. C. Kessels

Published in: Neuropsychology Review | Issue 1/2021

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Abstract

This review investigates the severity and nature of post-stroke working memory deficits with reference to the multi-component model of working memory. We conducted a systematic search in PubMed up to March 2019 with search terms for stroke and memory. Studies on adult stroke patients, that included a control group, and assessed working memory function, were selected. Effect sizes (Hedges’ g) were extracted from 50 studies (in total 3,084 stroke patients) based on the sample size, mean and standard deviation of patients and controls. Performance of stroke patients was compared to healthy controls on low-load (i.e. capacity) and high-load (executively demanding) working memory tasks, grouped by modality (verbal, non-verbal). A separate analysis compared patients in the sub-acute and the chronic stage. Longitudinal studies and effects of lesion location were systematically reviewed. Stroke patients demonstrated significant deficits in working memory with a moderate effect size for both low-load (Hedges’ g = -.58 [-.82 to -.43]) and high-load (Hedges’ g = -.59 [-.73 to -.45]) tasks. The effect sizes were comparable for verbal and non-verbal material. Systematically reviewing the literature showed that working memory deficits remain prominent in the chronic stage of stroke. Lesions in a widespread fronto-parietal network are associated with working memory deficits. Stroke patients show decrements of moderate magnitude in all subsystems of working memory. This review clearly demonstrates the global nature of the impairment in working memory post-stroke.
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Footnotes
1
Li, You, Xu, Yuan, Shen, Huang, & Liu (2019) defined minor stroke by a score of 5 or less on the National Institute of Health Stroke Scale at admission and a diagnosis of ischemic stroke confirmed by neuroimaging; Mansueti, De Frias, Bub, and Dixon (2008) based inclusion on self-reported mild stroke for which medical attention was received, in a community-based study.
 
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Metadata
Title
Post-Stroke Working Memory Dysfunction: A Meta-Analysis and Systematic Review
Authors
Selma Lugtmeijer
Nikki A. Lammers
Edward H. F. de Haan
Frank-Erik de Leeuw
Roy P. C. Kessels
Publication date
01-03-2021
Publisher
Springer US
Keyword
Stroke
Published in
Neuropsychology Review / Issue 1/2021
Print ISSN: 1040-7308
Electronic ISSN: 1573-6660
DOI
https://doi.org/10.1007/s11065-020-09462-4

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