Examining motor evoked potential amplitude and short‐interval intracortical inhibition on the up‐going and down‐going phases of a transcranial alternating current stimulation (tacs) imposed alpha oscillation

A.M. Vallence; K. Dansie; M.R. Goldsworthy; S.M. McAllister; R. Yang; J.C. Rothwell; M.C. Ridding

doi:10.1111/ejn.15124

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Examining motor evoked potential amplitude and short‐interval intracortical inhibition on the up‐going and down‐going phases of a transcranial alternating current stimulation (tacs) imposed alpha oscillation

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Examining motor evoked potential amplitude and short‐interval intracortical inhibition on the up‐going and down‐going phases of a transcranial alternating current stimulation (tacs) imposed alpha oscillation

A.M. Vallence, K. Dansie, M.R. Goldsworthy, S.M. McAllister, R. Yang, J.C. Rothwell and M.C. Ridding

European Journal of Neuroscience, Vol.53(8), pp.2755-2762

2021

DOI: https://doi.org/10.1111/ejn.15124

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Abstract

Many brain regions exhibit rhythmical activity thought to reflect the summed behaviour of large populations of neurons. The endogenous alpha rhythm has been associated with phase‐dependent modulation of corticospinal excitability. However, whether exogenous alpha rhythm, induced using transcranial alternating current stimulation (tACS) also has a phase‐dependent effect on corticospinal excitability remains unknown. Here, we triggered transcranial magnetic stimuli (TMS) on the up‐ or down‐going phase of a tACS‐imposed alpha oscillation and measured motor evoked potential (MEP) amplitude and short‐interval intracortical inhibition (SICI). There was no significant difference in MEP amplitude or SICI when TMS was triggered on the up‐ or down‐going phase of the tACS‐imposed alpha oscillation. The current study provides no evidence of differences in corticospinal excitability or GABAergic inhibition when targeting the up‐going (peak) and down‐going (trough) phase of the tACS‐imposed oscillation.

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Title: Examining motor evoked potential amplitude and short‐interval intracortical inhibition on the up‐going and down‐going phases of a transcranial alternating current stimulation (tacs) imposed alpha oscillation
Authors/Creators: A.M. Vallence (Author/Creator) - Murdoch University
K. Dansie (Author/Creator) - Australia and New Zealand Dialysis and Transplant Registry
M.R. Goldsworthy (Author/Creator) - The University of Adelaide
S.M. McAllister (Author/Creator) - The University of Adelaide
R. Yang (Author/Creator) - Harman (Germany)
J.C. Rothwell (Author/Creator) - UCL Institute of Neurology
M.C. Ridding (Author/Creator) - University of South Australia
Publication Details: European Journal of Neuroscience, Vol.53(8), pp.2755-2762
Publisher: Wiley
Identifiers: 991005542676007891
Copyright: © 2021 Federation of European Neuroscience Societies and John Wiley & Sons Ltd
Murdoch Affiliation: School of Allied Health
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 1 Clinical & Life Sciences; 1.82 Gait & Posture; 1.82.811 Transcranial Magnetic Stimulation
Web Of Science research areas: Neurosciences
ESI research areas: Neuroscience & Behavior