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Magnetic stimulation system for controlling repetition frequency through function

A technology of repetition frequency and magnetic stimulation, applied in the direction of using the magnetic field generated by the coil, magnetic therapy, electrotherapy, etc., can solve the problems of nerve oscillation resonance, etc., and achieve the effect of flexible regulation and beneficial stimulation effect

Pending Publication Date: 2020-10-30
INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI
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Problems solved by technology

Therefore, in the study of brain function by transcranial magnetic stimulation, repeated stimulation with a fixed frequency can only form resonance with specific frequency band neural oscillations, and cannot completely resonate with all neural oscillations related to brain function, and the stimulation effect has certain limitations.
[0004] Fixed repetition rate transcranial magnetic stimulation can only resonate with specific frequency band neural oscillations in brain research

Method used

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  • Magnetic stimulation system for controlling repetition frequency through function
  • Magnetic stimulation system for controlling repetition frequency through function
  • Magnetic stimulation system for controlling repetition frequency through function

Examples

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Embodiment example

[0054] First, a sine function is generated by the function generator 1, x(t)=sin(t), period T=2π; the frequency change rate k=0.5Hz / s and the frequency change range given by the frequency change curve calculation module 2 [ 0.5,14], the calculated frequency change function curve y(t)=0.5*t*sin(t), t∈[0.01,31.41];

[0055] Then, the frequency change function curve is discretized through the frequency output module 3, the stimulation period is set to π, and the root mean square value of y(t) in the stimulation period is calculated to obtain the repetition frequency value f varying with time i , i=1,...,n, outputting the repetition frequency value and duration varying with time as a frequency trigger signal to the magnetic stimulator host 4;

[0056] Finally, the magnetic stimulation intensity and the number of pulses are set through the stimulation intensity and pulse number setting module 6, and the magnetic stimulation whose frequency changes with time is output through the co...

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Abstract

The invention discloses a magnetic stimulation system for controlling repetition frequency through a function. The magnetic stimulation system is provided with a function generator for generating a periodic function, a frequency change curve calculation module used for obtaining a frequency change curve according to the frequency change rate and the periodic function, a frequency output module used for discretizing the frequency change curve, a magnetic stimulator host used for generating magnetic pulses according to the discretized frequency and a coil used for outputting magnetic stimulationwith repeated frequency change; the frequency calculation module is further provided with two receiving ports used for setting the frequency change rate and the frequency change range, and the magnetic stimulator host is further connected with a stimulation intensity and pulse number setting module used for setting the stimulation intensity and the pulse number. According to the invention, resonance with nerve oscillation of more frequency bands in the brain can be formed, neuron activity can be regulated and controlled more flexibly, a more beneficial stimulation effect is obtained, a new scheme is provided for selection of rTMS repetition frequency, and a new thought and method are provided for application of rTMS to brain stimulation.

Description

technical field [0001] The invention relates to a magnetic stimulation system. In particular, it relates to a magnetic stimulation system in which the repetition rate is controlled by a function. Background technique [0002] Repetitive transcranial magnetic stimulation (rTMS) is a brain stimulation technique widely used in the research of brain function, brain network and brain circuit. [0003] Repetition frequency is an important parameter for rTMS brain research. It is generally believed that high-frequency rTMS is used to facilitate cortical excitability, and low-frequency rTMS is used to inhibit cortical excitability. In actual research, a fixed repetition frequency is usually set for stimulation based on observation of stimulation effects or research results in existing literature. The oscillation frequency of the brain rhythm is usually 1-100Hz. However, repetitive stimulation at a fixed frequency can only resonate with the neural oscillations of a specific freque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N2/04
CPCA61N2/006A61N2/02
Inventor 殷涛王欣刘志朋靳静娜马任
Owner INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI
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