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Magnetic stimulation system optimization and simulation

Author: ZhaoZuo
Tutor: LinJiaRui
School: Huazhong University of Science and Technology
Course: Biomedical Engineering
Keywords: Magnetic Stimulation Nerve fibers Time-varying magnetic field Induced electric field Activation function H-H model Simulation Model
CLC: R318.6
Type: Master's thesis
Year: 2005
Downloads: 106
Quote: 4
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Abstract


Magnetic stimulation is the use of time-varying magnetic field induced current generated within the organization , so that tissue can be excited excitement a noninvasive stimulation methods . Neuronal excitability in elucidating the mechanism of generation and propagation after established from the magnetic stimulation to the nerve fibers in all aspects of magnetic stimulation model . The center conductor using the classical model is derived under the nonlinear magnetic stimulation of nerve fibers Hodgkin-Huxley model equation describes the mechanism of magnetic stimulation to generate excitement : Magnetic stimulation and electrical stimulation were all excited by the current cell , except that the electric stimulation is direct stimulation , while the magnetic stimulation is indirect. External magnetic stimulation currents are time-varying magnetic field inside the conductor eddy current volume . For a cylindrical nerve fibers , from the excitatory effects of the induced electric field along the nerve axis component of the gradient , ie, the activation function . Excluding derived annular coil wire size and rectangular cross-section of the annular coil , the coil plane parallel to the nerve fibers of finite length cylindrical distribution of the induced electric field is calculated. This paper also discusses the RLC discharge circuit response status , the establishment of magnetic stimulation system circuit parameters and magnetic stimulation of nerve cells in response to subliminal link between the use of magnetic stimulation system design optimization , and use the activation function to verify the optimization results . Active nerve fiber model can simulate excitable nerve fibers in the external excitation action potential , is the study of neural response is an effective method . Given magnetic stimulation is actually electrical stimulation, using MATLAB Simulink tools to build a neuronal Hodgkin-Huxley model , given the current source at the point of nerve cells stimulated response states and actions propagation simulation models. Magnetic stimulation to further establish the simulation model basis.

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CLC: > Medicine, health > Basic Medical > Medical science in general > Biomedical Engineering > Apparatus, equipment
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