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Digital symbol conversion test system based on brain-computer interface and test method thereof

A technology for converting tests and digital symbols, which is applied in the field of brain-computer interface, can solve the problems of interfering with the intervention effect of patients with movement disorders, achieve the effect of expanding the user population, reasonable design, and reducing random measurement errors

Active Publication Date: 2020-01-14
INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI
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AI Technical Summary

Problems solved by technology

Previous research suggests that early deficits in cognitive function interfere with intervention effects in patients with movement disorders

Method used

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  • Digital symbol conversion test system based on brain-computer interface and test method thereof
  • Digital symbol conversion test system based on brain-computer interface and test method thereof
  • Digital symbol conversion test system based on brain-computer interface and test method thereof

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Embodiment Construction

[0028] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] The present invention proposes a digital symbol conversion test system based on a brain-computer interface, the system includes a digital symbol conversion test device and a brain-computer interface device connected together, and the digital symbol conversion test device is mainly used to evaluate the user's attention Force, requiring the user to follow the diagram at the top of the interface to judge whether the symbols and numbers below it match the content in the diagram; the brain-computer interface device uses a two-target steady-state visual evoked potential brain-computer interface to judge the user's intention command (Numbers and symbols match or do not match the content in the diagram) and send to the digital symbol conversion test device.

[0030] The digital symbol conversion testing device adopts a computer equipped with dig...

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Abstract

The invention relates to a digital symbol conversion test system based on a brain-computer interface and a test method thereof. The technical characteristic is that the system is formed by connectinga digital symbol conversion testing device and a brain-computer interface device, the digital symbol conversion testing device is used for displaying a digital symbol conversion testing interface, a user judges whether symbols and numbers below the digital symbol conversion testing interface are matched with contents in a diagram or not according to the diagram above the digital symbol conversiontesting interface, and evaluates the attention of the user according to a user intention instruction; and the brain-computer interface device is worn on the head of the user and used for judging the user intention instruction and sending the user intention instruction to the digital symbol conversion testing device. According to the invention, the brain-computer interface is used for sending the intention of the user, the user group is expanded, the accuracy of system measurement is improved, and the management work of experimenters is reduced, so that the random measurement error caused by the experimenters is reduced to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of brain-computer interface, in particular to a digital symbol conversion test system and a test method based on the brain-computer interface. Background technique [0002] Cognitive impairment is common in various brain disorders such as schizophrenia, cerebrovascular disease, major depressive disorder, traumatic brain injury, and multiple sclerosis. These diseases often reduce the quality of daily life of patients and increase the burden on patients and society. Therefore, it is important to assess the patient's cognitive function. Currently, information processing speed is one of the most sensitive tests of cognitive impairment and a central aspect of neuropsychological testing. [0003] The number-to-sign switch test has been widely used to measure information processing speed and switch attention. In the number-symbol conversion test, the number will be displayed and the user is required to fill in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/16A61B5/00G06F3/01A61B5/0484
CPCA61B5/165A61B5/4064A61B5/378G06F3/015
Inventor 陈小刚
Owner INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI
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