Vector transcranial magnetic stimulation method on basis of trend of nerve fibers

Abstract

The invention discloses a vector transcranial magnetic stimulation method on the basis of trend of nerve fibers. The vector transcranial magnetic stimulation method includes determining stimulation directions of target cranial nerve fibers; overlaying positions of points with the most intensive stimulation generated by coils and the positions of target stimulation points; enabling the directions of most intensive magnetic fields generated by the coils to coincide with target stimulation directions; respectively computing induced electric field vectors and induced current vectors of prime spots of various space bodies of cranial nerve fibers on the basis of the trend of the target cranial nerve fibers. The vector transcranial magnetic stimulation method has the advantages that the nerve stimulation spatial resolution can be improved, the target stimulation nerves can be positioned by users according to experimental requirements, the coils are matched with the positions of the nerves, and accordingly predictable stimulation results can be realized; the induced electric field vectors and the induced current vectors on the basis of positional relations between the coils and the nerve fibers can be estimated, and the induced electric field vectors and the induced current vectors on the basis of the trend of the target nerve fibers can be computed by the users according to positional relations between the coils and cerebral stimulation regions.

Description

technical field [0001] The invention relates to a transcranial magnetic stimulation method. In particular, it relates to a vector transcranial magnetic stimulation method based on the orientation of nerve fibers. Background technique [0002] Transcranial Magnetic Stimulation (TMS) is a new stimulation technology developed in the past 30 years. Magnetic stimulation is non-invasive, easy to operate, and has the advantages of better electrical safety than electrical stimulation technology. And other fields, especially in the treatment of depression, obsessive-compulsive disorder, Parkinson's disease, epilepsy and post-traumatic stress disorder, etc., have good application prospects and become a research hotspot in recent years. [0003] The transcranial magnetic stimulation device discharges the inductive coil through a high-power capacitor, and generates a changing current on the coil for a short time. According to the laws of electromagnetic induction, a changing current p...

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Problems solved by technology

[0006] 1. The resolution of the stimulation area is too low. Nerve stimulation is mainly aimed at the stimulation of nerve axons, and the purpose of nerve conduction is achieved by changing the internal and external potential of the axons, while the resolution of the stimulation position of the stimulator positioned at the cortical level is too low

[0007] 2. The stimulation effect is difficult to accurately evaluate

The calculation of the induced electric field strength is related to the discharge current of the coil and the positional relationship between the coil and the brain stimulation area. It is difficult to achieve precise magnetic stimulation based on the direction of nerve fibers in the existing technology

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