Localization of Sensorimotor Cortex Using Navigated Transcranial Magnetic Stimulation and Magnetoencephalography

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Localization of Sensorimotor Cortex Using Navigated Transcranial Magnetic Stimulation and Magnetoencephalography. / Pitkänen, Minna; Yazawa, Shogo; Airaksinen, Katja; Lioumis, Pantelis; Nurminen, Jussi; Pekkonen, Eero; Mäkelä, Jyrki P.

In: Brain Topography, 01.01.2019.

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Pitkänen, Minna ; Yazawa, Shogo ; Airaksinen, Katja ; Lioumis, Pantelis ; Nurminen, Jussi ; Pekkonen, Eero ; Mäkelä, Jyrki P. / Localization of Sensorimotor Cortex Using Navigated Transcranial Magnetic Stimulation and Magnetoencephalography. In: Brain Topography. 2019.

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@article{f7f3abfafeb14ad7a1a0aea05508b43b,
title = "Localization of Sensorimotor Cortex Using Navigated Transcranial Magnetic Stimulation and Magnetoencephalography",
abstract = "The mapping of the sensorimotor cortex gives information about the cortical motor and sensory functions. Typical mapping methods are navigated transcranial magnetic stimulation (TMS) and magnetoencephalography (MEG). The differences between these mapping methods are, however, not fully known. TMS center of gravities (CoGs), MEG somatosensory evoked fields (SEFs), corticomuscular coherence (CMC), and corticokinematic coherence (CKC) were mapped in ten healthy adults. TMS mapping was performed for first dorsal interosseous (FDI) and extensor carpi radialis (ECR) muscles. SEFs were induced by tactile stimulation of the index finger. CMC and CKC were determined as the coherence between MEG signals and the electromyography or accelerometer signals, respectively, during voluntary muscle activity. CMC was mapped during the activation of FDI and ECR muscles separately, whereas CKC was measured during the waving of the index finger at a rate of 3–4 Hz. The maximum CMC was found at beta frequency range, whereas maximum CKC was found at the movement frequency. The mean Euclidean distances between different localizations were within 20 mm. The smallest distance was found between TMS FDI and TMS ECR CoGs and longest between CMC FDI and CMC ECR sites. TMS-inferred localizations (CoGs) were less variable across participants than MEG-inferred localizations (CMC, CKC). On average, SEF locations were 8 mm lateral to the TMS CoGs (p < 0.01). No differences between hemispheres were found. Based on the results, TMS appears to be more viable than MEG in locating motor cortical areas.",
keywords = "Corticokinematic coherence, Corticomuscular coherence, Magnetoencephalography, Motor evoked potential, Navigated transcranial magnetic stimulation, Somatosensory evoked field",
author = "Minna Pitk{\"a}nen and Shogo Yazawa and Katja Airaksinen and Pantelis Lioumis and Jussi Nurminen and Eero Pekkonen and M{\"a}kel{\"a}, {Jyrki P.}",
year = "2019",
month = "1",
day = "1",
doi = "10.1007/s10548-019-00716-w",
language = "English",
journal = "Brain Topography, Springer, New York",
issn = "0896-0267",

}

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TY - JOUR

T1 - Localization of Sensorimotor Cortex Using Navigated Transcranial Magnetic Stimulation and Magnetoencephalography

AU - Pitkänen, Minna

AU - Yazawa, Shogo

AU - Airaksinen, Katja

AU - Lioumis, Pantelis

AU - Nurminen, Jussi

AU - Pekkonen, Eero

AU - Mäkelä, Jyrki P.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - The mapping of the sensorimotor cortex gives information about the cortical motor and sensory functions. Typical mapping methods are navigated transcranial magnetic stimulation (TMS) and magnetoencephalography (MEG). The differences between these mapping methods are, however, not fully known. TMS center of gravities (CoGs), MEG somatosensory evoked fields (SEFs), corticomuscular coherence (CMC), and corticokinematic coherence (CKC) were mapped in ten healthy adults. TMS mapping was performed for first dorsal interosseous (FDI) and extensor carpi radialis (ECR) muscles. SEFs were induced by tactile stimulation of the index finger. CMC and CKC were determined as the coherence between MEG signals and the electromyography or accelerometer signals, respectively, during voluntary muscle activity. CMC was mapped during the activation of FDI and ECR muscles separately, whereas CKC was measured during the waving of the index finger at a rate of 3–4 Hz. The maximum CMC was found at beta frequency range, whereas maximum CKC was found at the movement frequency. The mean Euclidean distances between different localizations were within 20 mm. The smallest distance was found between TMS FDI and TMS ECR CoGs and longest between CMC FDI and CMC ECR sites. TMS-inferred localizations (CoGs) were less variable across participants than MEG-inferred localizations (CMC, CKC). On average, SEF locations were 8 mm lateral to the TMS CoGs (p < 0.01). No differences between hemispheres were found. Based on the results, TMS appears to be more viable than MEG in locating motor cortical areas.

AB - The mapping of the sensorimotor cortex gives information about the cortical motor and sensory functions. Typical mapping methods are navigated transcranial magnetic stimulation (TMS) and magnetoencephalography (MEG). The differences between these mapping methods are, however, not fully known. TMS center of gravities (CoGs), MEG somatosensory evoked fields (SEFs), corticomuscular coherence (CMC), and corticokinematic coherence (CKC) were mapped in ten healthy adults. TMS mapping was performed for first dorsal interosseous (FDI) and extensor carpi radialis (ECR) muscles. SEFs were induced by tactile stimulation of the index finger. CMC and CKC were determined as the coherence between MEG signals and the electromyography or accelerometer signals, respectively, during voluntary muscle activity. CMC was mapped during the activation of FDI and ECR muscles separately, whereas CKC was measured during the waving of the index finger at a rate of 3–4 Hz. The maximum CMC was found at beta frequency range, whereas maximum CKC was found at the movement frequency. The mean Euclidean distances between different localizations were within 20 mm. The smallest distance was found between TMS FDI and TMS ECR CoGs and longest between CMC FDI and CMC ECR sites. TMS-inferred localizations (CoGs) were less variable across participants than MEG-inferred localizations (CMC, CKC). On average, SEF locations were 8 mm lateral to the TMS CoGs (p < 0.01). No differences between hemispheres were found. Based on the results, TMS appears to be more viable than MEG in locating motor cortical areas.

KW - Corticokinematic coherence

KW - Corticomuscular coherence

KW - Magnetoencephalography

KW - Motor evoked potential

KW - Navigated transcranial magnetic stimulation

KW - Somatosensory evoked field

UR - http://www.scopus.com/inward/record.url?scp=85066033523&partnerID=8YFLogxK

U2 - 10.1007/s10548-019-00716-w

DO - 10.1007/s10548-019-00716-w

M3 - Article

JO - Brain Topography, Springer, New York

JF - Brain Topography, Springer, New York

SN - 0896-0267

ER -

ID: 34394200