Code for: Systematic review and network meta-analysis of anodal tDCS effects on verbal episodic memory: Modelling heterogeneity of stimulation locations
Author(s) / Creator(s)
Bartl, Gergely
Other kind(s) of contributor
University of Roehampton
Abstract / Description
Code for: Bartl, G. J., Blackshaw, E., Crossman, M., Allen, P., & Sandrini, M. (2020). Systematic review and network meta-analysis of anodal tDCS effects on verbal episodic memory: Modeling heterogeneity of stimulation locations. Zeitschrift für Psychologie, 228(1), 3–13. https://doi.org/10.1027/2151-2604/a000396
R code (metaregression_rscript) for metaregresion: Annotated script performing the following: loads necessary packages, downloads dataset, runs metregression, runs Eggers test, calculates confidence interval for tau squared. R code (nma_rscript) for network meta-analysis: Annotated script performing the following: loads necessary packages, downloads dataset, runs network meta-analysis, creates graph, ranks treatment arms, creates forest plot.
There is growing interest in the study of transcranial direct current stimulation (tDCS), a non-invasive brain stimulation technique, as an effective intervention to improve memory. In order to evaluate the relative efficacy of tDCS based on the location of anodal electrode sites, we conducted a systematic review examining the effect of stimulation applied during encoding on subsequent verbal episodic memory in healthy adults. We performed a network meta-analysis of 20 studies (23 experiments) with N = 978 participants. Left ventrolateral prefrontal and temporo-parietal sites appeared most likely to enhance episodic memory, although any significant effects were based on findings from single studies only. We did not find evidence for verbal retrieval enhancement of tDCS versus sham stimulation where the effect was based on more than one experimental paper. More frequent replication efforts and stricter reporting standards may improve the quality of evidence and allow more precise estimation of population-level effects of tDCS.
Keyword(s)
verbal memory tDCS prefrontal cortex parietal cortex network meta-analysisPersistent Identifier
Date of first publication
2019-10-05
Publisher
PsychArchives
Is referenced by
Is version of
Citation
Bartl, G. (2019, October 5). Code for: Systematic review and network meta-analysis of anodal tDCS effects on verbal episodic memory: Modelling heterogeneity of stimulation locations. PsychArchives. https://doi.org/10.23668/PSYCHARCHIVES.2619
-
nma_osf_rscript.RR script - 2.13KBMD5: 51568100c55e2fb04951e0bda276387dDescription: Analysis code for network meta-analysis
-
nma_pairwise_metaregression_osf_rscript.RR script - 1.08KBMD5: ee7673718bc2b55f26ee7552414bf2aeDescription: Analysis code for metaregression
-
There are no other versions of this object.
-
Author(s) / Creator(s)Bartl, Gergely
-
Other kind(s) of contributorUniversity of Roehamptonen
-
PsychArchives acquisition timestamp2019-10-11T14:51:50Z
-
Made available on2019-10-11T14:51:50Z
-
Date of first publication2019-10-05
-
Abstract / DescriptionCode for: Bartl, G. J., Blackshaw, E., Crossman, M., Allen, P., & Sandrini, M. (2020). Systematic review and network meta-analysis of anodal tDCS effects on verbal episodic memory: Modeling heterogeneity of stimulation locations. Zeitschrift für Psychologie, 228(1), 3–13. https://doi.org/10.1027/2151-2604/a000396en
-
Abstract / DescriptionR code (metaregression_rscript) for metaregresion: Annotated script performing the following: loads necessary packages, downloads dataset, runs metregression, runs Eggers test, calculates confidence interval for tau squared. R code (nma_rscript) for network meta-analysis: Annotated script performing the following: loads necessary packages, downloads dataset, runs network meta-analysis, creates graph, ranks treatment arms, creates forest plot.en
-
Abstract / DescriptionThere is growing interest in the study of transcranial direct current stimulation (tDCS), a non-invasive brain stimulation technique, as an effective intervention to improve memory. In order to evaluate the relative efficacy of tDCS based on the location of anodal electrode sites, we conducted a systematic review examining the effect of stimulation applied during encoding on subsequent verbal episodic memory in healthy adults. We performed a network meta-analysis of 20 studies (23 experiments) with N = 978 participants. Left ventrolateral prefrontal and temporo-parietal sites appeared most likely to enhance episodic memory, although any significant effects were based on findings from single studies only. We did not find evidence for verbal retrieval enhancement of tDCS versus sham stimulation where the effect was based on more than one experimental paper. More frequent replication efforts and stricter reporting standards may improve the quality of evidence and allow more precise estimation of population-level effects of tDCS.en
-
SponsorshipGB received project-specific funding from Santander UK. GB and EB are supported by the Vice-Chancellor’s Scholarship from the University of Roehampton.en
-
Table of contentsAnalysis code for metaregression; Analysis code for network meta-analysisen
-
CitationBartl, G. (2019, October 5). Code for: Systematic review and network meta-analysis of anodal tDCS effects on verbal episodic memory: Modelling heterogeneity of stimulation locations. PsychArchives. https://doi.org/10.23668/PSYCHARCHIVES.2619en
-
Persistent Identifierhttps://hdl.handle.net/20.500.12034/2239
-
Persistent Identifierhttps://doi.org/10.23668/psycharchives.2619
-
Language of contenteng
-
PublisherPsychArchivesen
-
Is referenced byhttps://doi.org/10.1027/2151-2604/a000396
-
Is version ofhttps://osf.io/cfyvk/
-
Is related tohttps://doi.org/10.23668/psycharchives.2620
-
Is related tohttps://doi.org/10.1027/2151-2604/a000396
-
Keyword(s)verbal memoryen
-
Keyword(s)tDCSen
-
Keyword(s)prefrontal cortexen
-
Keyword(s)parietal cortexen
-
Keyword(s)network meta-analysisen
-
Dewey Decimal Classification number(s)150
-
TitleCode for: Systematic review and network meta-analysis of anodal tDCS effects on verbal episodic memory: Modelling heterogeneity of stimulation locationsen
-
DRO typecodeen