VR head display visual evoked potential-based brain-machine interface system and control method

Abstract

The invention discloses a VR head display visual evoked potential-based brain-machine interface system and a control method. The system comprises visual stimulation module, an electroencephalogram acquisition module, an electroencephalogram processing module and a signal output module, wherein the visual stimulation module is used for providing visual stimulation capable of evoking all the visual invoked potentials such as event-related potentials or steady-state visual evoked potentials; the electroencephalogram acquisition module is used for acquiring evoked potentials generated by cerebral cortex under the visual stimulation; the electroencephalogram processing module is used for carrying out processing such as amplification, filtration and denoising on acquired electroencephalograms so as to obtain electroencephalogram signals with relatively good performance; and the signal output module is used for transmitting the processed electroencephalogram signals to external equipment through Bluetooth. According to the system, virtual reality head-mounted display equipment is adopted to provide visual stimulation so as to generate evoked potentials, so that visual stimulation systems which must be displayed through non-portable equipment such as computer screens and the like, in traditional brain-machine interface systems are changed, visual display equipment is more light and convenient, the volumes of the brain-machine interface systems are greatly decreased, and the flexibility and practical value of the brain-machine interface systems are improved.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering and computer interaction, and specifically relates to a brain-computer interface system and a control method based on VR head-mounted display visual evoked potentials. Background technique [0002] Brain Computer Interface (BCI) is a new external information exchange and control technology that establishes between the human brain and computers or other electronic devices that does not rely on conventional brain information output pathways (peripheral nerves and muscle tissue). The original purpose of researching the BCI system is to provide a way for patients with neurological and motor system diseases to communicate with the outside world, allowing patients to control external devices with their own thinking and consciousness, and further improving the quality of life of patients. As the research on this technology gradually deepens, the brain-computer interface will play a greater...

AI Technical Summary

Problems solved by technology

[0005] At present, there is no brain-computer interface system and control method based on VR head-mounted display visual evoked potential

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