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Medicine and Health Sciences

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Brain

Iowa State University

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Articles 1 - 4 of 4

Full-Text Articles in Engineering

Investigation Of Shape, Position, And Permeability Of Shielding Material In Quadruple Butterfly Coil For Focused Transcranial Magnetic Stimulation, Priyam Rastogi, Bowen Zhang, Yalun Tang, Erik G. Lee, Ravi L. Hadimani, David C. Jiles Jan 2018

Investigation Of Shape, Position, And Permeability Of Shielding Material In Quadruple Butterfly Coil For Focused Transcranial Magnetic Stimulation, Priyam Rastogi, Bowen Zhang, Yalun Tang, Erik G. Lee, Ravi L. Hadimani, David C. Jiles

Electrical and Computer Engineering Publications

Transcranial magnetic stimulation has been gaining popularity in the therapy for several neurological disorders. A time-varying magnetic field is used to generate electric field in the brain. As the development of TMS methods takes place, emphasis on the coil design increases in order to improve focal stimulation. Ideally reduction of stimulation of neighboring regions of the target area is desired. This study, focused on the improvement of the focality of the Quadruple Butterfly Coil (QBC) with supplemental use of different passive shields. Parameters such as shape, position and permeability of the shields have been explored to improve the focus of ...


Effect Of Anatomical Variability In Brain On Transcranial Magnetic Stimulation Treatment, F. Syeda, H. Magsood, E. G. Lee, A. A. El-Gendy, David C. Jiles, R. L. Hadimani Jan 2017

Effect Of Anatomical Variability In Brain On Transcranial Magnetic Stimulation Treatment, F. Syeda, H. Magsood, E. G. Lee, A. A. El-Gendy, David C. Jiles, R. L. Hadimani

Electrical and Computer Engineering Publications

Transcranial Magnetic Stimulation is a non-invasive clinical therapy used to treat depression and migraine, and shows further promise as treatment for Parkinson’s disease, Alzheimer’s disease, and other neurological disorders. However, it is yet unclear as to how anatomical differences may affect stimulation from this treatment. We use finite element analysis to model and analyze the results of Transcranial Magnetic Stimulation in various head models.A number of heterogeneous head models have been developed using MRI data of real patients, including healthy individuals as well as patients of Parkinson’s disease. Simulations of Transcranial Magnetic Stimulation performed on 22 ...


Transcranial Magnetic Stimulation-Coil Design With Improved Focality, Priyam Rastogi, E. G. Lee, Ravi L. Hadimani, David C. Jiles Jan 2017

Transcranial Magnetic Stimulation-Coil Design With Improved Focality, Priyam Rastogi, E. G. Lee, Ravi L. Hadimani, David C. Jiles

Electrical and Computer Engineering Publications

Transcranial Magnetic Stimulation (TMS) is a technique for neuromodulation that can be used as a non-invasive therapy for various neurological disorders. In TMS, a time varying magnetic field generated from an electromagnetic coilplaced on the scalp is used to induce an electric field inside the brain. TMS coilgeometry plays an important role in determining the focality and depth of penetration of the induced electric field responsible for stimulation. Clinicians and basic scientists are interested in stimulating a localized area of the brain,while minimizing the stimulation of surrounding neural networks. In this paper, a novel coil has been proposed, namely ...


Transcranial Magnetic Stimulation Of Mouse Brain Using High-Resolution Anatomical Models, Lawrence J. Crowther, Ravi L. Hadimani, Anumantha G. Kanthasamy, David C. Jiles Jan 2014

Transcranial Magnetic Stimulation Of Mouse Brain Using High-Resolution Anatomical Models, Lawrence J. Crowther, Ravi L. Hadimani, Anumantha G. Kanthasamy, David C. Jiles

Electrical and Computer Engineering Publications

Transcranial magnetic stimulation (TMS) offers the possibility of non-invasive treatment of braindisorders in humans. Studies on animals can allow rapid progress of the research including exploring a variety of different treatment conditions. Numerical calculations using animalmodels are needed to help design suitable TMS coils for use in animal experiments, in particular, to estimate the electric field induced in animal brains. In this paper, we have implemented a high-resolution anatomical MRI-derived mouse model consisting of 50 tissuetypes to accurately calculate induced electric field in the mouse brain. Magnetic field measurements have been performed on the surface of the coil and compared ...