Dynamic variable multichannel transcranial magnetic stimulation coil array and control method thereof

Abstract

The invention discloses a dynamic variable multichannel transcranial magnetic stimulation coil array and a control method thereof. The coil array comprises a group of straight leads which are arranged at equal intervals in an S direction, a group of straight leads which are arranged at equal intervals in a C direction and control units; the S direction and the C direction correspond to a sagittal axis and a coronal axis of the brain respectively, the two groups of the leads in the S direction and the C direction are crossed, perpendicular to each other and insulated with each other to form a net-shaped coil array, and an input end of each of the straight leads or an output end is connected with an independent control unit; the coil array is bent to form a spherical surface in space, the radian of the spherical surface is matched with a curved surface shape of a human skull, and the whole coil array is in a shape of a helmet and covers the whole head. According to the transcranial magnetic stimulation (TMS) coil array, a plurality of TMS coils are generated simultaneously in a range of the whole head, and the size, the strength and the method of the stimulation area can be changed; the multichannel and high- spatial resolution TMS stimulation can be achieved, and the dynamic variation of a stimulation position and a stimulation method can be achieved.

Description

technical field [0001] The invention relates to the technical field of bioelectromagnetics, in particular to a dynamically variable multi-channel transcranial magnetic stimulation coil array and a control method thereof. Background technique [0002] The magnetic field can penetrate the skull with almost no loss. Transcranial Magnetic Stimulation (TMS) generates an alternating magnetic field by introducing pulse current into the TMS coil, and the magnetic field penetrates the skull ( figure 1 .a), a weak induction current was induced in the cerebral cortex below the stimulated site ( figure 1 .b, figure 1 .c). If the induced current is parallel to the nerve fibers, a strong membrane potential can be induced to cause neuronal cell activity. At present, TMS is widely used in the fields of brain science, cognitive science and clinical medicine. [0003] Most of the existing TMS use single-channel o-shaped coils (such as figure 1 .b) or figure-of-eight coils (such as fig...

AI Technical Summary

Problems solved by technology

[0009] In summary, Figure 2The existing multi-channel TMS coil design schemes all have problems such as low resolution, difficult coil positioning, many control units, and difficult flexibility of the system

This has become the direct cause of the stagnation of multi-channel TMS research in recent years.

In the implementation of TMS stimulation, dynamic research such as changing the stimulation site, stimulation method and stimulation intensity arbitrarily according to needs is beyond the reach of traditional methods.

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