Abstract Transcranial magnetic stimulation (TMS) is a cortical regulation technique that utilizes the induced electric field in brain resulting from the stimulation current. The technique is now widely applied in the treatment of neurology, rehabilitation science, etc. Analysis of electric field induced by TMS has been a hot spot and has play an important role in TMS related safety issues and stimulation effect. It’s also necessary in stimulation scheme optimization and coil design. In this paper, we firstly introduced regular clinical side effects of TMS, and summarized the conventional electric field analysis methods in the current TMS research. Numerical methods and analytical methods that have been applied in TMS electric analysis were included along with their application scenarios, followed by the discussion of physiological modeling methods in TMS. In addition, due to the close relationship between the magnetic stimulation coil and the electric field distribution in brain tissue, this paper introduced several critical structures of TMS coil. Electric field distribution characteristics of several typical designs of the magnetic stimulation coil were simulated and analyzed with the spherical model based on finite element analysis software. In the end, the future development tendency of TMS electric field analysis was prospected.
Xia Siping,Xu Yajie,Yu Yingcong, et al. Electric Field Analysis Progress of Transcranial Magnetic Stimulation Device[J]. Chinese Journal of Biomedical Engineering, 2020, 39(6): 727-735.
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