Cited by 105Transcranial Magnetic Stimulation StudiesElectroconvulsive Therapy StudiesNeural and Behavioral Psychology Studies

Effects of prefrontal bipolar and high-definition transcranial direct current stimulation on cortical reactivity and working memory in healthy adults

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Hill, Aron T., Rogasch, Nigel C., Fitzgerald, Paul B., Hoy, Kate E.·2017·NeuroImage

Abstract

Transcranial direct current stimulation (tDCS) is a well-recognised neuromodulatory technology which has been shown to induce short-lasting changes in motor-cortical excitability. The recent and rapid expansion of tDCS into the cognitive domain, however, necessitates deeper mechanistic understanding of its neurophysiological effects over non-motor brain regions. The present study utilised transcranial magnetic stimulation combined with electroencephalography (TMS-EEG) to probe the immediate and longer-term effects of both a bipolar (BP-tDCS) and more focal 4×1 High-Definition tDCS (HD-tDCS) montage applied over the left DLPFC on TMS-evoked potentials (TEPs) and oscillations in 19 healthy adult participants. 2-back working memory (WM) performance was also assessed as a marker of cognitive function. Region of interest (ROI) analyses taken from the F1 electrode directly adjacent to the stimulation site revealed increased P60 TEP amplitudes at this location 5min following BP-tDCS and 30min following HD-tDCS. Further global cluster based analyses of all scalp electrodes revealed widespread neuromodulatory changes following HD-tDCS, but not BP-tDCS, both five and 30min after stimulation, with reductions also detected in both beta and gamma oscillatory power over parieto-occipital channels 30min after stimulation. No significant changes in WM performance were observed following either HD-tDCS or BP-tDCS. This study highlights the capacity for single-session prefrontal anodal tDCS montages to modulate neurophysiological processes, as assessed with TMS-EEG.

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Crossref · 10.1016/j.neuroimage.2017.03.001

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  • Working memory performance following NIBS has demonstrated greater effect sizes 30-40 minutes post stimulation compared to immediately following stimulation.

    “working memory performance following NIBS has demonstrated greater effect sizes 30-40 minutes post stimulation compared to immediately following stimulation (Chung, Rogasch, Hoy, & Fitzgerald, 2018;Hill, Rogasch, Fitzgerald, & Hoy, 2017).”

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Authors
Hill, A. T., Rogasch, N. C., Fitzgerald, P. B., & Hoy, K. E.
Affiliations
  • The Alfred Hospital (AU)
  • Monash University (AU)
Corresponding author
Hill, Aron T.
Venue
NeuroImage
Publisher
Elsevier BV
Published
2017-05
Volume
152
Pages
142-157
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2594694121
Cited by
105
References
14
Citations by year
2026: 5 · 2025: 8 · 2024: 5 · 2023: 11 · 2022: 14 · 2021: 15 · 2020: 9 · 2019: 14 · 2018: 16 · 2017: 6 · 2016: 1
FWCI
6.01
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
  • Own your potential (DEAKIN) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
National Health and Medical Research Council (1072057, 1082894, 1078567)
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Electroconvulsive Therapy Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
transcranial direct current stimulation, high-definition tDCS, prefrontal cortex, dorsolateral prefrontal cortex, working memory, cortical excitability, TMS-evoked potentials, P60, beta oscillations, gamma oscillations, cortical oscillations, neuromodulation
MeSH terms
Adult, Cerebral Cortex, Electroencephalography, Female, Humans, Male, Memory, Short-Term, Young Adult, Transcranial Direct Current Stimulation

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