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Three-stage brain-controlled upper limb rehabilitation method combining steady-state visual evoked potential and mental imagery

A technology of steady-state visual induction and motor imagery, applied in the fields of psychotherapy, medical simulation, medical informatics, etc., can solve the lack of direct participation of the brain motor nervous system, the need to improve the treatment effect and universality, and the lack of active participation of patients, etc. problems, to achieve the effect of benefiting motor learning and improving training enthusiasm and high safety

Inactive Publication Date: 2018-09-28
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment methods commonly used in clinical practice at this stage include: therapists assist patients in exercise training therapy, occupational therapy, electrical stimulation therapy, etc., which are not only tedious, but also lack the active participation of patients and the direct participation of the motor nervous system of the brain. Requires patients to have residual motor function, so its therapeutic effect and universality need to be improved

Method used

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  • Three-stage brain-controlled upper limb rehabilitation method combining steady-state visual evoked potential and mental imagery
  • Three-stage brain-controlled upper limb rehabilitation method combining steady-state visual evoked potential and mental imagery
  • Three-stage brain-controlled upper limb rehabilitation method combining steady-state visual evoked potential and mental imagery

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Experimental program
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Embodiment 1

[0028] see figure 1 , the hardware system structure of this three-stage brain-controlled upper limb rehabilitation method combined with steady-state visual evoked potentials and motor imagery is described in detail as follows: the 32-lead EEG acquisition equipment developed by Jiangsu Boruikang Co., Ltd. is used—the sampling frequency is 250Hz, and the computer ( 1) Communicate with each other using the TCP / IP protocol, and operate with a computer (1) with rehabilitation training software to form an upper limb rehabilitation training system. The EEG acquisition device is a multi-parameter synchronizer (2) via an intelligent synchronization The center (3) and an amplifier (4) are connected to a 32-lead electrode cap (5). The electrodes on the 32-lead electrode cap (5) collect the EEG signal of the user's EEG, and the electrodes are connected to the amplifier (4) through the lead wire; the amplifier (4) performs analog amplification and analog filtering on the EEG signal and con...

Embodiment 2

[0034] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0035] see Figure 4 , the offline training single training process of the third phase of VR-MI training in step (3) is as follows:

[0036] (1-1) The 2s cross picture is presented, prompting the patient to rest;

[0037] (1-2) 2s random left upper limb or right upper limb movement video presentation, prompting the patient to get ready and guiding upper limb motor imagery movements;

[0038] (1-3) The 4s images of arrows in the same direction as the left and right upper limbs in the video just now are presented. The left arrow indicates motor imagination of the left upper limb, and the right arrow indicates motor imagination of the right upper limb. The patient performs the corresponding motor imagination task according to the arrow prompts.

Embodiment 3

[0039] Embodiment three: this embodiment is basically the same as embodiment two, and the special features are as follows:

[0040] See Figure 5, the interface diagram of the three-stage brain-controlled upper limb rehabilitation method combined with steady-state visual evoked potentials and motor imagery, including the VR video-guided first-stage training interface (1) (4), and the VR-SSVEP second-stage training interface Figure (2) (4) (5), VR-MI third stage training interface diagram (3) (6) (7), the specific operation steps are as follows:

[0041] see Figure 6 , the single training process of the first stage of training guided by the VR video in the step (1) is as follows:

[0042] Check the corresponding action in the check box on the interface (1), and input the number of training a, and the upper body animation of the 3D character corresponding to each checked action will be played on the interface (4) in turn, and cycle a times; among them, the 3D character Upper l...

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Abstract

The invention relates to a three-stage brain-controlled upper limb rehabilitation method combining steady-state visual evoked potential and mental imagery (MI). The method comprises the following steps: (1) the first stage of VR video guidance training: a patient is made to be familiar with upper limb rehabilitation movements through VR video guidance; (2) the second stage of VR-SSVEP training: the patient needs to concentrate to observe pictures that represent different upper limb movements and flicker with a specific frequency, EEG signals of the patient are collected in real-time to analyzeintentions of the patient, and visual feedback is provided to the patient through VR animation to make the patient learn to concentrate; and (3) the third stage of VR-MI training: EEG signals of theleft and right upper limbs of the patient during MI are collected during off-line training, and a mental imagery intention recognition model is established. The EEG signals of mental imagery of the patient are analyzed according to the model during online training, movement intentions of the patient are recognized, and movements of a 3D character in an interface are controlled in real time, so that brain central nerve remodeling is facilitated through MI. The method exhibits a good immersion property, enables active rehabilitation to be realized, enables rehabilitation to proceed step by step,and is a new method for upper limb rehabilitation of a cerebral stoke patient.

Description

technical field [0001] The invention relates to a three-stage brain-controlled upper limb rehabilitation method combined with steady-state visual evoked potential and motor imagery, which can provide the first stage of VR video-guided training, the second stage of VR-SSVEP training and The third phase of VR-MI training. It has the characteristics of high safety, good immersion, active recovery and gradual progress. Background technique [0002] Stroke is a disease in which brain function is lost due to brain ischemia or hemorrhagic injury. According to the report of the World Health Organization, more than 48% of stroke patients still have upper limb dysfunction after entering the chronic phase, which has a great impact on daily life. The treatment methods commonly used in clinical practice at this stage include: therapist-assisted exercise training treatment, occupational therapy, electrical stimulation treatment, etc., which are not only tedious, but also lack the active...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16H20/70G16H50/50
CPCG16H20/70G16H50/50
Inventor 杨帮华胡晨潇汪金龙李博王伟
Owner SHANGHAI UNIV
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