Selectivity of conventional electrodes for recording motor evoked potentials: an investigation with high-density surface electromyography

Alessio Gallina; Sue Peters; Jason L. Neva; Lara A. Boyd; S. Jayne Garland

doi:10.1002/mus.25412

Selectivity of conventional electrodes for recording motor evoked potentials: an investigation with high-density surface electromyography

Alessio Gallina, Sue Peters, Jason L. Neva, Lara A. Boyd, S. Jayne Garland

Sport, Exercise and Rehabilitation Sciences

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

244 Downloads (Pure)

Abstract

Introduction: The objective of this study was to determine whether motor evoked potentials (MEPs) elicited with transcranial magnetic stimulation and measured with conventional bipolar electromyography (EMG) are influenced by crosstalk from non-target muscles.

Methods: MEPs were recorded in healthy participants using conventional EMG electrodes placed over the extensor carpi radialis muscle (ECR) and high-density surface EMG (HDsEMG). Fifty MEPs at 120% resting and active motor threshold were recorded. To determine the contribution of ECR to the MEPs, the amplitude distribution across HDsEMG channels was correlated with EMG activity recorded during a wrist extension task.

Results: Whereas the conventional EMG identified MEPs from ECR in >90% of the stimulations, HDsEMG revealed that spatial amplitude distribution representative of ECR activation was observed less frequently at rest than while holding a contraction (P < 0.001).

Conclusions: MEPs recorded with conventional EMG may contain crosstalk from non-target muscles, especially when the stimulation is applied at rest.

Original language	English
Pages (from-to)	828-834
Number of pages	7
Journal	Muscle & Nerve
Volume	55
Issue number	6
Early online date	27 Jan 2017
DOIs	https://doi.org/10.1002/mus.25412
Publication status	Published - 22 May 2017

Keywords

electromyography
forearm
high-density surface electromyography
motor evoked potential
ranscranial magnetic stimulation
wristextensor muscles

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10.1002/mus.25412Licence: None: All rights reserved

Gallina_et_al_Selectivity_of_conventional_electrodes_for_recording_motor_evoked_potentials_Muscle_&_Nerve_2016
Checked for eligibility: 19/09/2019 This is the peer reviewed version of the following article:Gallina, A. , Peters, S. , Neva, J. L., Boyd, L. A. and Garland, S. J. (2017), Selectivity of conventional electrodes for recording motor evoked potentials: An investigation with high‐density surface electromyography. Muscle Nerve, 55: 828-834. doi:10.1002/mus.25412, which has been published in final form at: https://doi.org/10.1002/mus.25412. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Accepted author manuscript, 699 KBLicence: Other (please specify with Rights Statement)

Cite this

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title = "Selectivity of conventional electrodes for recording motor evoked potentials: an investigation with high-density surface electromyography",

abstract = "Introduction: The objective of this study was to determine whether motor evoked potentials (MEPs) elicited with transcranial magnetic stimulation and measured with conventional bipolar electromyography (EMG) are influenced by crosstalk from non-target muscles. Methods: MEPs were recorded in healthy participants using conventional EMG electrodes placed over the extensor carpi radialis muscle (ECR) and high-density surface EMG (HDsEMG). Fifty MEPs at 120% resting and active motor threshold were recorded. To determine the contribution of ECR to the MEPs, the amplitude distribution across HDsEMG channels was correlated with EMG activity recorded during a wrist extension task. Results: Whereas the conventional EMG identified MEPs from ECR in >90% of the stimulations, HDsEMG revealed that spatial amplitude distribution representative of ECR activation was observed less frequently at rest than while holding a contraction (P < 0.001). Conclusions: MEPs recorded with conventional EMG may contain crosstalk from non-target muscles, especially when the stimulation is applied at rest.",

keywords = "electromyography, forearm, high-density surface electromyography, motor evoked potential, ranscranial magnetic stimulation, wristextensor muscles",

author = "Alessio Gallina and Sue Peters and Neva, {Jason L.} and Boyd, {Lara A.} and Garland, {S. Jayne}",

year = "2017",

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doi = "10.1002/mus.25412",

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T1 - Selectivity of conventional electrodes for recording motor evoked potentials

T2 - an investigation with high-density surface electromyography

AU - Gallina, Alessio

AU - Peters, Sue

AU - Neva, Jason L.

AU - Boyd, Lara A.

AU - Garland, S. Jayne

PY - 2017/5/22

Y1 - 2017/5/22

N2 - Introduction: The objective of this study was to determine whether motor evoked potentials (MEPs) elicited with transcranial magnetic stimulation and measured with conventional bipolar electromyography (EMG) are influenced by crosstalk from non-target muscles. Methods: MEPs were recorded in healthy participants using conventional EMG electrodes placed over the extensor carpi radialis muscle (ECR) and high-density surface EMG (HDsEMG). Fifty MEPs at 120% resting and active motor threshold were recorded. To determine the contribution of ECR to the MEPs, the amplitude distribution across HDsEMG channels was correlated with EMG activity recorded during a wrist extension task. Results: Whereas the conventional EMG identified MEPs from ECR in >90% of the stimulations, HDsEMG revealed that spatial amplitude distribution representative of ECR activation was observed less frequently at rest than while holding a contraction (P < 0.001). Conclusions: MEPs recorded with conventional EMG may contain crosstalk from non-target muscles, especially when the stimulation is applied at rest.

AB - Introduction: The objective of this study was to determine whether motor evoked potentials (MEPs) elicited with transcranial magnetic stimulation and measured with conventional bipolar electromyography (EMG) are influenced by crosstalk from non-target muscles. Methods: MEPs were recorded in healthy participants using conventional EMG electrodes placed over the extensor carpi radialis muscle (ECR) and high-density surface EMG (HDsEMG). Fifty MEPs at 120% resting and active motor threshold were recorded. To determine the contribution of ECR to the MEPs, the amplitude distribution across HDsEMG channels was correlated with EMG activity recorded during a wrist extension task. Results: Whereas the conventional EMG identified MEPs from ECR in >90% of the stimulations, HDsEMG revealed that spatial amplitude distribution representative of ECR activation was observed less frequently at rest than while holding a contraction (P < 0.001). Conclusions: MEPs recorded with conventional EMG may contain crosstalk from non-target muscles, especially when the stimulation is applied at rest.

KW - electromyography

KW - forearm

KW - high-density surface electromyography

KW - motor evoked potential

KW - ranscranial magnetic stimulation

KW - wristextensor muscles

U2 - 10.1002/mus.25412

DO - 10.1002/mus.25412

M3 - Article

SN - 0148-639X

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EP - 834

JO - Muscle & Nerve

JF - Muscle & Nerve

IS - 6

ER -

Selectivity of conventional electrodes for recording motor evoked potentials: an investigation with high-density surface electromyography

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