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Brain-computer interface (BCI) communication method based on joint coding of space, time and frequency

A technology of joint coding and communication method, applied in the brain-computer interface communication of time and frequency joint coding, based on the space field, can solve the problems of backward communication protocol and single coding method, and achieve efficient expansion, improve communication bandwidth and communication efficiency Improved effect

Active Publication Date: 2013-06-12
TIANJIN UNIV
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Problems solved by technology

However, in the field of BCI, its communication protocol has been in a relatively backward single encoding method

Method used

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  • Brain-computer interface (BCI) communication method based on joint coding of space, time and frequency
  • Brain-computer interface (BCI) communication method based on joint coding of space, time and frequency

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Embodiment Construction

[0030] The present invention designs a communication protocol for a brain-computer interface (BCI) based on visual stimulation. The protocol realizes the space-time-frequency joint coding (STF coding) of the instruction set and the decoding of the space-time-frequency information of the EEG signal, which can greatly improve the communication bandwidth of the BCI.

[0031] The technical process is: design the experiment, build the EEG signal acquisition device required for the experiment, and then collect the operator’s EEG signal data under the guidance of the experimental system, store it and then perform certain preprocessing and feature extraction, and finally sort.

[0032] The gist of the invention is to propose a new BCI communication protocol, which can greatly increase the bandwidth of the BCI system compared with the traditional BCI communication protocol. Further research can lead to a perfect brain-computer interface system, which is expected to obtain considerable...

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Abstract

The invention belongs to the technical field of BCI communication and can increase the band width of a BCI system. Further researches can obtain a complete BCI system, and considerable social and economic benefits can be hopefully obtained. In order to achieve the purposes, the technical scheme adopted by the method is that a BCI communication method of joint coding of time and frequency is adopted, an experiment is designed, an EGG (electroencephalogram) signal acquisition device needed by the experiment is built, EGG signal data is acquired and operated under the construction of an experiment system, certain pretreatment and feature extraction are performed after the data are stored, and the data are classified; and the pretreatment and the feature extraction comprise an encoding strategy and a decoding strategy, and a time, frequency and space encoding and decoding strategy is further included. The BCI communication method based on the joint coding of space, time and frequency is mainly applied to BCI communication design and manufacture occasions.

Description

technical field [0001] The invention belongs to the technical field of brain-computer interface communication, in particular, relates to a brain-computer interface communication method based on joint coding of space, time and frequency. Background technique [0002] The definition of BCI given by the first Brain-Computer Interface (BCI) International Conference is: "BCI is a communication control system that does not depend on the normal output channels of the brain's peripheral nerves and muscles." Current research In the results, it mainly collects and analyzes human EEG signals in different states, and then uses certain engineering techniques to establish a direct communication and control channel between the human brain and computers or other electronic devices, thereby realizing a kind of The brand-new information exchange and control technology can provide a way for the disabled, especially those who have lost basic limb motor functions but normal thinking, to communic...

Claims

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Application Information

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IPC IPC(8): G06F3/01
Inventor 许敏鹏马岚陈龙翟天辰汤佳贝綦宏志万柏坤明东
Owner TIANJIN UNIV
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