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An EEG Channel Selection Method Based on Standard Mutual Information

A channel selection and mutual information technology, applied in the field of emotion recognition, can solve the problem of incomplete channel selection results, and achieve the effect of improving the classification accuracy, reducing the number of channels, and reducing the number of channels.

Active Publication Date: 2021-08-31
XIAN UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to propose an EEG channel selection method based on standard mutual information, so as to overcome the problem in the prior art that the channel selection result will be affected and the channel selection result will be incomplete

Method used

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  • An EEG Channel Selection Method Based on Standard Mutual Information
  • An EEG Channel Selection Method Based on Standard Mutual Information
  • An EEG Channel Selection Method Based on Standard Mutual Information

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Embodiment Construction

[0029] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein, similar elements in different implementations adopt associated similar element numbers. In the following implementation manners, many details are described for better understanding of the present application. However, those skilled in the art can readily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods.

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Example,

[0032] see figure 1 and figure 2 , an EEG channel selection method based on standard mutual information, including word segmentation to obtain a time-frequency map, building an association matrix, and using a threshold to select channels. The specific steps are as follows:

[0033] Step ...

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Abstract

The invention relates to the field of emotion recognition and an EEG signal channel optimization technology, in particular to an EEG channel selection method based on standard mutual information. The method includes the following steps: collecting data, extracting EEG signals by using a public data set; performing short-time Fourier transform on the EEG signals to obtain a time-frequency diagram; calculating standard mutual information values ​​between channels in the time-frequency diagram , construct the correlation matrix; analyze the correlation matrix and set the threshold to select the channel to determine the optimal channel; use the support vector machine classifier to classify the data after the selected channel to obtain the emotion recognition rate. The present invention has the advantages of maintaining a high emotion recognition rate while greatly reducing the number of channels, and its preferred channel provides an implementable solution for the design of wearable EEG devices, and solves the complex design of hardware It can effectively improve the classification accuracy of EEG signals; it overcomes the data redundancy and computational complexity brought by the use of full-channel signals.

Description

technical field [0001] The invention relates to the field of emotion recognition and an EEG signal channel optimization technology, specifically a method for selecting an EEG channel based on standard mutual information. Background technique [0002] As a high-level function of brain activity, emotion affects people's work and life to a large extent. With the rise of artificial intelligence technology, emotion recognition has also received the attention of scholars. At present, emotion recognition mainly revolves around two aspects: people's external behavior and objective physiological signals. Because physiological signals are spontaneous and not controlled by subjective consciousness, they can more objectively reflect people's true emotions. In actual research, more physiological signals such as EEG, EMG, and skin electricity are used. Among them, the EEG signal is directly generated by the central nervous system of the human being, which more directly and objectively ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/369A61B5/372A61B5/16A61B5/00
CPCA61B5/165A61B5/7235A61B5/7257A61B5/7267A61B5/316A61B5/369
Inventor 宋辉胡书源衡霞张荣贺炎
Owner XIAN UNIV OF POSTS & TELECOMM
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