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How do Gyral Orientation and White Matter Anisotropy Affect the Electric Field Induced by TMS?

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons84119

Opitz,  A
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84318

Windhoff,  M
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons84257

Thielscher,  A
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Opitz, A., Windhoff, M., Heidemann R, Turner, R., & Thielscher, A. (2011). How do Gyral Orientation and White Matter Anisotropy Affect the Electric Field Induced by TMS?. Poster presented at 17th Annual Meeting of the Organization for Human Brain Mapping (HBM 2011), Québec City, Canada.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-BB8A-7
Abstract
The biophysics of transcranial magnetic stimulation (TMS) is not yet well understood. We characterize in detail the electric field induced in gray (GM) and white matter (WM), using a geometrically accurate model of an individual head combined with high-resolution diffusion weighted imaging (DWI). Use of finite element methods (FEM) allows determination of the impact of gyrus orientation and WM anisotropy on the field induced by a figure-8 coil.