Efficient brain-controlled Chinese input method based on motor visual evoked potential

Abstract

The invention provides an efficient brain-controlled Chinese input method based on a movement vision evoked potential. The method in which a pronunciation and pattern two-step spelling method is adopted, Chinese characters are input in two steps, and meanwhile, the steady state movement vision evoked potential serves as a brain-machine interface is designed, when the method is used, an electrode is placed on the head of a user first, after the user accepts the movement vision simulation of an interactive interface, an electroencephalogram response is induced, the electroencephalogram response is processed through the electrode and an electroencephalogram collection module, and an electroencephalogram signal is obtained; after the electroencephalogram signal is received by a data processing and control module, an identification result is obtained through analysis, and a user interface is controlled to display the corresponding characters. By means of the method, the operation steps and time can be obviously reduced, the operation is simple and convenient, the user is comfortable to use, the efficient brain-controlled input of the Chinese characters under a large character library is achieved, a dyskinesia patient can be assisted in life communication, and the method has good practical prospects.

Description

technical field [0001] The invention relates to the technical field of brain-computer interface and rehabilitation assistance, in particular to an efficient brain-controlled Chinese input method based on motor visual evoked potentials. Background technique [0002] The human brain interacts with the external environment by controlling muscles through external neural pathways. However, many diseases can damage the central nervous system and destroy nerve pathways, such as amyotrophic lateral sclerosis and other diseases. In severe cases, it is even impossible to control the voluntary movement of muscles. [0003] Brain-computer interface is a technology that achieves direct information exchange between the brain and external devices without relying on human neuromuscular channels. This technology has developed rapidly in the past ten years. People began to try to apply the brain-computer interface to the field of rehabilitation assistance. A large number of brain-controlled ...

AI Technical Summary

Problems solved by technology

However, due to the large number of Chinese characters commonly used in modern Chinese, most of the existing Chinese brain-computer interface systems use the P300 potential brain-computer interface method, which is prone to fatigue and poor comfort. Steps, slow input speed, small system font, unable to achieve efficient and complete brain-controlled spelling of Chinese characters

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