Research on Brain-Computer Interface Principles

Brain-Computer Interface (BCI), a new type of human-computer interaction technology, is a channel that can establish direct and effective information interaction between the brain and external devices. Through BCI technology, a new way of human-computer information interaction mediated by the human brain has been created. In recent years, with the development of signal processing and computer technology, BCI research has made remarkable achievements, and has shown great application value in related fields such as medical rehabilitation, military equipment and learning training Brain-computer interface (BCI) is a pathway or connection between human brain and computer, which is divided into two categories: invasive and non-invasive. BCI is used to exchange and interact with information according to the brain's thinking intention through the acquisition of brain signals, analysis, extraction and decoding of the acquired EEG signals. Through the electrical signal activity of the motor cortex, using its external equipment and then feedback stimulation of the cortical center, translation to stroke patients, through the central and peripheral nerve transmission to the rehabilitation patients, it can be set according to the condition of different patients drive mode, motor control, personalized training and intelligent interaction of neurological rehabilitation, in order to improve the ability of stroke patients in motor, sensory, cognitive, verbal communication and activities of daily life It can also be used to guide clinical practice and improve the targeting of treatment.