Visual cortex positioning method and device with transcranial magnetic stimulation

A technology of transcranial magnetic stimulation and positioning method, applied in the field of medical assistance, can solve problems such as difficult positioning, and achieve the effect of ensuring accuracy, increasing accuracy and reducing possibility

Pending Publication Date: 2019-11-08
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Claims
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Problems solved by technology

[0003] Aiming at the above-mentioned shortcomings in the prior art, the present invention provides a visual cortex positioning method and device for transcranial magnetic stimulation, which solves the problem of difficult positioning during rTMS intervention for amblyopia patients

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  • Visual cortex positioning method and device with transcranial magnetic stimulation
  • Visual cortex positioning method and device with transcranial magnetic stimulation
  • Visual cortex positioning method and device with transcranial magnetic stimulation

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Embodiment

[0036] Transcranial Magnetic Stimulation (TMS) is a technology that generates current in the local cerebral cortex through a pulsed magnetic field to temporarily activate or inhibit the cortex. The effect of transcranial magnetic stimulation (TMS) is affected by many factors, including stimulating brain area, coil type, pulse waveform, current direction, stimulation intensity, stimulation frequency, and number of stimulation pulses. Among them, the stimulation intensity is the most important. Taking the visual cortex as an example, high-intensity TMS acting on the occipital lobe can produce phosphenes, while low-intensity stimulation can produce transient blind spots. In the case of ensuring that the above parameters are consistent, individual differences in cortical excitability, cerebral cortex configuration, and skull shape (affecting the distance from the scalp to the cerebral cortex) will significantly affect the ability to induce the same excitability. The intensity of ...

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Abstract

The invention provides a visual cortex positioning method with transcranial magnetic stimulation. The stimulation intensity correction and the stimulation target positioning are based on the special sensory perception characteristic of the visual cortex, the double information of the visual cortex function and the anatomical structure of a person to be stimulated is obtained, and the positioning is accurate. The invention provides a keyboard connected to an rTMS parameter console, keys replace oral input so as to reduce the possibility of head movement, further increase the positioning accuracy and improve the efficiency of next treatment intervention. According to the invention, starting from the mean intensity of the stimulation threshold PT, the intensity is increased by 2% step by stepalong with retest reliability test method, three areas of information of brain appearance, brain anatomical structure and brain functional area positioning of the person to be stimulated is fully integrated, the positioning accuracy is ensured, and the method is superior to a TMS positioning method which is carried out by simply utilizing the brain information in one aspect in the prior art.

Description

technical field [0001] The invention belongs to the technical field of medical assistance, in particular to a visual cortex positioning method and device for transcranial magnetic stimulation. Background technique [0002] According to the estimate of WHO in 2005, there are 124 million people suffering from amblyopia in the world (WHO Epidemiology 2005), while in my country there are about 30 million adults with amblyopia who need to be stimulated, about 10 million children with amblyopia, and the detection rate of children with amblyopia is about 0.81-2.8%. There is no organic lesion in the ocular structure of the amblyopia to-be-stimulated person, and its abnormality occurs in the visual cortex, which is a disease related to visual development. As the most common cause of monocular vision loss in children and adolescents, amblyopia not only brings many inconveniences in life, affects learning, social and sports abilities, but also negatively affects mental health, personal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N2/04A61N2/00
CPCA61N2/006A61N2/02
Inventor 张文秋
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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