Effect of coil positioning and orientation of the quadruple butterfly coil during transcranial magnetic stimulation

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2021-01-06
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Afuwape, Oluwaponmile
Rastogi, Priyam
Jiles, David
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Jiles, David
Distinguished Professor Emeritus
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Mechanical Engineering
The Department of Mechanical Engineering at Iowa State University is where innovation thrives and the impossible is made possible. This is where your passion for problem-solving and hands-on learning can make a real difference in our world. Whether you’re helping improve the environment, creating safer automobiles, or advancing medical technologies, and athletic performance, the Department of Mechanical Engineering gives you the tools and talent to blaze your own trail to an amazing career.
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Materials Science and Engineering
Materials engineers create new materials and improve existing materials. Everything is limited by the materials that are used to produce it. Materials engineers understand the relationship between the properties of a material and its internal structure — from the macro level down to the atomic level. The better the materials, the better the end result — it’s as simple as that.
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Ames National LaboratoryMechanical EngineeringElectrical and Computer EngineeringMaterials Science and Engineering
Abstract

Transcranial Magnetic Stimulation (TMS) is a non-invasive neuromodulation technique for treating neurological and psychiatric disorders. It is a proven technique that is safe and considered very effective when compared to conventional brain surgery or drug therapy. Researchers and clinicians are interested in understanding the distribution of the induced electric field (E-Field) during TMS and determining its effectiveness in treating neurological disorders. TMS studies are primarily focused on enhancing the focality and depth of penetration of the induced electric field in order to increase its effectiveness. Coil orientation has been confirmed to have an effect on the magnitude and direction of the induced E-Field. In this paper, we study the effect of the orientation of the novel Quadruple Butterfly Coil (QBC) on the distribution of the induced E-Field. Finite element analyses were conducted with the orientation of the QBC in steps of 15° over the vertex of two head models and about the transverse (XY –) plane and coronal (XZ –) plane of the head model. The maximum electric field intensity (E-Max) and stimulated volume of the brain (V-Half) were computed and compared to determine the optimal coil orientation.

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This article is published as Afuwape, Oluwaponmile Faith, Priyam Rastogi, David Jiles, and Life Fellow IEEE. "Effect of coil positioning and orientation of the quadruple butterfly coil during transcranial magnetic stimulation." AIP Advances 11, no. 1 (2021): 015212. DOI: 10.1063/9.0000104. Posted with permission.

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Fri Jan 01 00:00:00 UTC 2021
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