Cited by 224Transcranial Magnetic Stimulation StudiesNeural and Behavioral Psychology StudiesCognitive Abilities and Testing

It's the thought that counts: examining the task-dependent effects of transcranial direct current stimulation on executive function

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Gill, Jay, Shah-Basak, Priyanka P., Hamilton, Roy·2015·Brain Stimulation

Abstract

Background Prior investigations employing transcranial direct current stimulation (tDCS) have shown that stimulation can elicit subsequent improvement on tests of various cognitive abilities, including working memory. While stimulation parameters such as intensity and duration are known to determine the effects of tDCS, the degree to which stimulation effects are influenced by the nature of cognitive activities during stimulation remains unclear. Objective/hypothesis To determine whether manipulating the working memory load of a task performed during stimulation would modulate tDCS-induced enhancement of performance on a different, related measure after stimulation. Methods In two separate but closely related sham-controlled experiments, two groups of healthy subjects underwent anodal tDCS (2 mA) of the left dorsolateral prefrontal cortex (DLPFC) for 20 min. In Experiment 1, subjects (n = 11) trained on a letter 3Back task during stimulation. In Experiment 2 subjects (n = 11) trained on a letter 1Back task, which resembled the 3Back task but featured a lower working memory load. In both experiments, before and after stimulation, subjects completed an adjusting Paced Auditory Serial Addition Task (A-PASAT). Both the experimenter and subjects were blind to stimulation conditions in both experiments. Results Subjects were both faster and more accurate on the A-PASAT task after receiving real tDCS paired with 3Back training (Experiment1) compared to sham+3Back, real+1Back, and sh…

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Authors
Gill, J., Shah-Basak, P. P., & Hamilton, R.
Affiliations
University of Pennsylvania (US)
Corresponding author
Hamilton, Roy
Venue
Brain Stimulation
Publisher
Elsevier BV
Published
2015-03
Volume
8
Issue
2
Pages
253-259
ISSN
  • 1876-4754 (ISSN-L)
  • 1935-861X
OpenAlex
W2047762347
Cited by
224
References
30
Citations by year
2026: 8 · 2025: 11 · 2024: 15 · 2023: 12 · 2022: 15 · 2021: 26 · 2020: 23 · 2019: 21 · 2018: 21 · 2017: 27 · 2016: 33 · 2015: 10 · 2014: 1
FWCI
12.33
Type
journal article
Language
en
Open access
Locations
  • Brain stimulation (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
University of Pennsylvania – Center for Undergraduate Research for funding this research
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
Keywords
transcranial direct current stimulation, executive function, working memory load, dorsolateral prefrontal cortex, anodal tDCS, Paced Auditory Serial Addition Test, 3-back task, non-invasive brain stimulation
MeSH terms
Adolescent, Adult, Double-Blind Method, Female, Humans, Male, Memory, Short-Term, Psychomotor Performance, Prefrontal Cortex, Young Adult, Executive Function, Transcranial Direct Current Stimulation

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