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Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions
The spatial extent of transcranial magnetic stimulation (TMS) is of paramount interest for all studies employing this method. It is generally assumed that the induced electric field is the crucial parameter to determine which cortical regions are excited. While it is difficult to directly measure th...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3984442/ https://www.ncbi.nlm.nih.gov/pubmed/24818076 http://dx.doi.org/10.1016/j.nicl.2014.03.004 |
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author | Opitz, Alexander Zafar, Noman Bockermann, Volker Rohde, Veit Paulus, Walter |
author_facet | Opitz, Alexander Zafar, Noman Bockermann, Volker Rohde, Veit Paulus, Walter |
author_sort | Opitz, Alexander |
collection | PubMed |
description | The spatial extent of transcranial magnetic stimulation (TMS) is of paramount interest for all studies employing this method. It is generally assumed that the induced electric field is the crucial parameter to determine which cortical regions are excited. While it is difficult to directly measure the electric field, one usually relies on computational models to estimate the electric field distribution. Direct electrical stimulation (DES) is a local brain stimulation method generally considered the gold standard to map structure–function relationships in the brain. Its application is typically limited to patients undergoing brain surgery. In this study we compare the computationally predicted stimulation area in TMS with the DES area in six patients with tumors near precentral regions. We combine a motor evoked potential (MEP) mapping experiment for both TMS and DES with realistic individual finite element method (FEM) simulations of the electric field distribution during TMS and DES. On average, stimulation areas in TMS and DES show an overlap of up to 80%, thus validating our computational physiology approach to estimate TMS excitation volumes. Our results can help in understanding the spatial spread of TMS effects and in optimizing stimulation protocols to more specifically target certain cortical regions based on computational modeling. |
format | Online Article Text |
id | pubmed-3984442 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-39844422014-05-09 Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions Opitz, Alexander Zafar, Noman Bockermann, Volker Rohde, Veit Paulus, Walter Neuroimage Clin Regular Articles The spatial extent of transcranial magnetic stimulation (TMS) is of paramount interest for all studies employing this method. It is generally assumed that the induced electric field is the crucial parameter to determine which cortical regions are excited. While it is difficult to directly measure the electric field, one usually relies on computational models to estimate the electric field distribution. Direct electrical stimulation (DES) is a local brain stimulation method generally considered the gold standard to map structure–function relationships in the brain. Its application is typically limited to patients undergoing brain surgery. In this study we compare the computationally predicted stimulation area in TMS with the DES area in six patients with tumors near precentral regions. We combine a motor evoked potential (MEP) mapping experiment for both TMS and DES with realistic individual finite element method (FEM) simulations of the electric field distribution during TMS and DES. On average, stimulation areas in TMS and DES show an overlap of up to 80%, thus validating our computational physiology approach to estimate TMS excitation volumes. Our results can help in understanding the spatial spread of TMS effects and in optimizing stimulation protocols to more specifically target certain cortical regions based on computational modeling. Elsevier 2014-03-18 /pmc/articles/PMC3984442/ /pubmed/24818076 http://dx.doi.org/10.1016/j.nicl.2014.03.004 Text en © 2014 The Authors https://creativecommons.org/licenses/by/3.0/This work is licensed under a Creative Commons Attribution 3.0 Unported License (https://creativecommons.org/licenses/by/3.0/) . |
spellingShingle | Regular Articles Opitz, Alexander Zafar, Noman Bockermann, Volker Rohde, Veit Paulus, Walter Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions |
title | Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions |
title_full | Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions |
title_fullStr | Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions |
title_full_unstemmed | Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions |
title_short | Validating computationally predicted TMS stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions |
title_sort | validating computationally predicted tms stimulation areas using direct electrical stimulation in patients with brain tumors near precentral regions |
topic | Regular Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3984442/ https://www.ncbi.nlm.nih.gov/pubmed/24818076 http://dx.doi.org/10.1016/j.nicl.2014.03.004 |
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