Conscious state detection system using invisible watching BCI (brain computer interface)

A technology of brain-computer interface and state of consciousness, which is applied to devices that cause changes in the state of consciousness, diagnostic recording/measurement, medical science, etc., can solve problems such as difficulty in obtaining accurate results, and patients' loss of ability to control eye movements The effect of high classification accuracy

Inactive Publication Date: 2019-06-18
SOUTH CHINA UNIV OF TECH
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  • Description
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the lack of existing systems for detecting the state of patients with disturbance of consciousness, patients generally lose the ability to control eye movements, and it is difficult to obtain accurate results. , the system is based on the non-destructive brain-compute

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  • Conscious state detection system using invisible watching BCI (brain computer interface)
  • Conscious state detection system using invisible watching BCI (brain computer interface)
  • Conscious state detection system using invisible watching BCI (brain computer interface)

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific examples.

[0025] The conscious state detection system of the implicit gaze BCI provided in this embodiment has three modules, which are respectively an audiovisual stimulation module, an EEG signal acquisition module, and an EEG signal processing module, wherein:

[0026] Described audio-visual stimulation module, the graphic user interface (GUI) used such as figure 1 As indicated, a protocol using audiovisual stimuli was used. A visible button is placed in the center of the LED display (1:0.15 display to button area ratio). Two speakers are positioned behind the LED display to present auditory stimuli. The visual stimuli consisted of 10 visual digits (0, 1, . . . , 9), while the auditory stimuli consisted of 10 spoken digits (0, 1, . . . , 9; 22 kHz). Each stimulus presentation (300 ms) consisted of a pair of visual and spoken digits that were semantically identical (eg visual digit...

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Abstract

The invention discloses a conscious state detection system using an invisible watching BCI (brain computer interface). The system comprises a visual and acoustic stimulation module, an EEG (electroencephalogram) acquisition module and an EEG processing module, wherein the visual and acoustic stimulation module randomly plays visual and acoustic digits with consistent and inconsistent semantics tosubjects; the EEG acquisition module records EEG of the subjects when the subjects perform specified tasks in real time; the EEG processing module outputs online detection results in real time. A visible watching visual and acoustic stimulation form is designed, and conscious state of the subjects is detected by the BCI technology. The accuracy is analyzed online and fed back to the subjects in real time, and the conscious state of the subjects is accurately detected. The conscious state of the subjects is detected by visual and acoustic stimulation with consistent and inconsistent semantics,and the detection accuracy of consciousness of the subjects is improved.

Description

technical field [0001] The invention relates to the technical field of brain-computer interface technology and electrophysiological event-related evoked potentials, in particular to a consciousness state detection system for implicitly watching the brain-computer interface. Background technique [0002] Consciousness is a rich concept that can be divided into two main parts: arousal and awareness. For patients with severe brain injury, they will enter the recovery phase of stable condition after passing the acute phase. Compared with the acute stage, the assessment of the condition at this stage needs to be as comprehensive as possible, and it is hoped that it can reflect the prognosis and outcome. Depending on the level of awareness, such patients can be divided into several clinical states. Some patients may enter a vegetative state (VS), where they have sleep-wake cycles but completely lose awareness of themselves and their environment. Some patients may return to a mi...

Claims

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Application Information

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IPC IPC(8): A61B5/00A61B5/0476A61M21/00
Inventor 李远清潘家辉肖君黄健涛
Owner SOUTH CHINA UNIV OF TECH
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