Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis.

BACKGROUND: Many people with Parkinson's disease (PD) experience cognitive decline. It is not known whether cognitive training or noninvasive brain stimulation are effective at alleviating cognitive deficits in PD. OBJECTIVE: To examine cognitive training and non-invasive brain stimulation inte...

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Main Authors: Lawrence, B., Gasson, Natalie, Bucks, R., Troeung, L., Loftus, A.
Format: Journal Article
Published: 2017
Online Access:http://hdl.handle.net/20.500.11937/55716
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author Lawrence, B.
Gasson, Natalie
Bucks, R.
Troeung, L.
Loftus, A.
author_facet Lawrence, B.
Gasson, Natalie
Bucks, R.
Troeung, L.
Loftus, A.
author_sort Lawrence, B.
building Curtin Institutional Repository
collection Online Access
description BACKGROUND: Many people with Parkinson's disease (PD) experience cognitive decline. It is not known whether cognitive training or noninvasive brain stimulation are effective at alleviating cognitive deficits in PD. OBJECTIVE: To examine cognitive training and non-invasive brain stimulation interventions for cognition in PD. METHODS: An extensive search was conducted of published and unpublished studies in online databases. Studies were selected if they were controlled trials examining standard (not individualized) or tailored (individualized) cognitive training, repetitive transcranial magnetic stimulation (rTMS), or transcranial direct current stimulation (tDCS) in PD, with outcomes measured by standardized neuropsychological tests. RESULTS: Fourteen controlled trials met inclusion criteria. For executive function, the pooled effect size (Hedges' g) for cognitive training (standard and tailored combined) was small ( g = 0.42) but statistically significant (95% CI 0.15-0.68). The pooled effect for standard cognitive training (alone) was medium ( g = 0.51) and significant (95% CI 0.16-0.85). For attention/working memory, small pooled effect sizes were found when combining standard and tailored cognitive training ( g = 0.23; 95% CI 0.02-0.44) and for standard cognitive training alone ( g = 0.29; 95% CI 0.04-0.53), both significant. For memory, small but significant pooled effect sizes were also found when combining standard and tailored cognitive training and for standard cognitive training alone. CONCLUSIONS: The results suggest that standard and tailored cognitive training may improve executive function, attention/working memory, and memory in PD. Future studies must adopt randomized controlled trial designs to explore the therapeutic potential of these interventions.
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spelling curtin-20.500.11937-557162017-09-13T16:10:19Z Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis. Lawrence, B. Gasson, Natalie Bucks, R. Troeung, L. Loftus, A. BACKGROUND: Many people with Parkinson's disease (PD) experience cognitive decline. It is not known whether cognitive training or noninvasive brain stimulation are effective at alleviating cognitive deficits in PD. OBJECTIVE: To examine cognitive training and non-invasive brain stimulation interventions for cognition in PD. METHODS: An extensive search was conducted of published and unpublished studies in online databases. Studies were selected if they were controlled trials examining standard (not individualized) or tailored (individualized) cognitive training, repetitive transcranial magnetic stimulation (rTMS), or transcranial direct current stimulation (tDCS) in PD, with outcomes measured by standardized neuropsychological tests. RESULTS: Fourteen controlled trials met inclusion criteria. For executive function, the pooled effect size (Hedges' g) for cognitive training (standard and tailored combined) was small ( g = 0.42) but statistically significant (95% CI 0.15-0.68). The pooled effect for standard cognitive training (alone) was medium ( g = 0.51) and significant (95% CI 0.16-0.85). For attention/working memory, small pooled effect sizes were found when combining standard and tailored cognitive training ( g = 0.23; 95% CI 0.02-0.44) and for standard cognitive training alone ( g = 0.29; 95% CI 0.04-0.53), both significant. For memory, small but significant pooled effect sizes were also found when combining standard and tailored cognitive training and for standard cognitive training alone. CONCLUSIONS: The results suggest that standard and tailored cognitive training may improve executive function, attention/working memory, and memory in PD. Future studies must adopt randomized controlled trial designs to explore the therapeutic potential of these interventions. 2017 Journal Article http://hdl.handle.net/20.500.11937/55716 10.1177/1545968317712468 restricted
spellingShingle Lawrence, B.
Gasson, Natalie
Bucks, R.
Troeung, L.
Loftus, A.
Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis.
title Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis.
title_full Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis.
title_fullStr Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis.
title_full_unstemmed Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis.
title_short Cognitive Training and Noninvasive Brain Stimulation for Cognition in Parkinson's Disease: A Meta-analysis.
title_sort cognitive training and noninvasive brain stimulation for cognition in parkinson's disease: a meta-analysis.
url http://hdl.handle.net/20.500.11937/55716