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

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...

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-computer interface technology, designs the visual and auditory stimulation paradigm of implicit gaze, builds the brain-computer interface system of EEG acquisition and EEG processing modules to detect the state of consciousness, and analyzes the subjects' audiovisual consistency and EEG data after audiovisual incongruity stimulation

Images