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Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris

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Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris. / Adank, Patti; Kennedy-Higgins, Dan; Maegherman, Gwijde et al.
In: Frontiers in Neuroscience, 31.10.2018.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Adank, P, Kennedy-Higgins, D, Maegherman, G, Hannah, R & Nuttall, HE 2018, 'Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris', Frontiers in Neuroscience. https://doi.org/10.3389/fnins.2018.00683

APA

Adank, P., Kennedy-Higgins, D., Maegherman, G., Hannah, R., & Nuttall, H. E. (2018). Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris. Frontiers in Neuroscience. Advance online publication. https://doi.org/10.3389/fnins.2018.00683

Vancouver

Adank P, Kennedy-Higgins D, Maegherman G, Hannah R, Nuttall HE. Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris. Frontiers in Neuroscience. 2018 Oct 31. Epub 2018 Oct 31. doi: 10.3389/fnins.2018.00683

Author

Adank, Patti ; Kennedy-Higgins, Dan ; Maegherman, Gwijde et al. / Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris. In: Frontiers in Neuroscience. 2018.

Bibtex

@article{7940e99eaf1f428da67378732b02774d,
title = "Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris",
abstract = "This study aimed to characterise effects of coil orientation on the size of Motor Evoked Potentials (MEPs) from both sides of Orbicularis Oris (OO) and both First Dorsal Interosseous (FDI) muscles, following stimulation to left lip and left hand Primary Motor Cortex. Using a 70mm figure-of-eight coil, we collected MEPs from eight different orientations while recording from contralateral and ipsilateral OO and FDI using a monophasic pulse delivered at 120% active motor threshold. MEPs from OO were evoked consistently for six orientations for contralateral and ipsilateral sites. Contralateral orientations 0°, 45°, 90°, and 315° were found to best elicit OO MEPs with a likely cortical origin. The largest FDI MEPs were recorded for contralateral 45°, invoking a posterior–anterior (PA) current flow. Orientations traditionally used for FDI were also found to be suitable for eliciting OO MEPs. Individuals vary more in their optimal orientation for OO than for FDI. It is recommended that researchers iteratively probe several orientations when eliciting MEPs from OO. Several orientations likely induced direct activation of facial muscles.",
keywords = "Transcranial Magnetic Stimulation, Motor Cortex, Facial muscle, Hand muscle, Motor evoked Potentials, Coil orientation",
author = "Patti Adank and Dan Kennedy-Higgins and Gwijde Maegherman and Ricci Hannah and Nuttall, {Helen E}",
year = "2018",
month = oct,
day = "31",
doi = "10.3389/fnins.2018.00683",
language = "English",
journal = "Frontiers in Neuroscience",
issn = "1662-453X",
publisher = "Frontiers Media S.A.",

}

RIS

TY - JOUR

T1 - Effects of coil orientation on Motor Evoked Potentials from Orbicularis Oris

AU - Adank, Patti

AU - Kennedy-Higgins, Dan

AU - Maegherman, Gwijde

AU - Hannah, Ricci

AU - Nuttall, Helen E

PY - 2018/10/31

Y1 - 2018/10/31

N2 - This study aimed to characterise effects of coil orientation on the size of Motor Evoked Potentials (MEPs) from both sides of Orbicularis Oris (OO) and both First Dorsal Interosseous (FDI) muscles, following stimulation to left lip and left hand Primary Motor Cortex. Using a 70mm figure-of-eight coil, we collected MEPs from eight different orientations while recording from contralateral and ipsilateral OO and FDI using a monophasic pulse delivered at 120% active motor threshold. MEPs from OO were evoked consistently for six orientations for contralateral and ipsilateral sites. Contralateral orientations 0°, 45°, 90°, and 315° were found to best elicit OO MEPs with a likely cortical origin. The largest FDI MEPs were recorded for contralateral 45°, invoking a posterior–anterior (PA) current flow. Orientations traditionally used for FDI were also found to be suitable for eliciting OO MEPs. Individuals vary more in their optimal orientation for OO than for FDI. It is recommended that researchers iteratively probe several orientations when eliciting MEPs from OO. Several orientations likely induced direct activation of facial muscles.

AB - This study aimed to characterise effects of coil orientation on the size of Motor Evoked Potentials (MEPs) from both sides of Orbicularis Oris (OO) and both First Dorsal Interosseous (FDI) muscles, following stimulation to left lip and left hand Primary Motor Cortex. Using a 70mm figure-of-eight coil, we collected MEPs from eight different orientations while recording from contralateral and ipsilateral OO and FDI using a monophasic pulse delivered at 120% active motor threshold. MEPs from OO were evoked consistently for six orientations for contralateral and ipsilateral sites. Contralateral orientations 0°, 45°, 90°, and 315° were found to best elicit OO MEPs with a likely cortical origin. The largest FDI MEPs were recorded for contralateral 45°, invoking a posterior–anterior (PA) current flow. Orientations traditionally used for FDI were also found to be suitable for eliciting OO MEPs. Individuals vary more in their optimal orientation for OO than for FDI. It is recommended that researchers iteratively probe several orientations when eliciting MEPs from OO. Several orientations likely induced direct activation of facial muscles.

KW - Transcranial Magnetic Stimulation

KW - Motor Cortex

KW - Facial muscle

KW - Hand muscle

KW - Motor evoked Potentials

KW - Coil orientation

U2 - 10.3389/fnins.2018.00683

DO - 10.3389/fnins.2018.00683

M3 - Journal article

JO - Frontiers in Neuroscience

JF - Frontiers in Neuroscience

SN - 1662-453X

ER -