基于双流孪生对比网络的脑电情绪识别

doi:10.3969/j.issn.0258-8021.2025.04.001

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Abstract In recent years, the research of emotion recognition based on EEG signals has gradually made remarkable progress. However, the labeling of labels requires a lot of manpower, and it is difficult to quickly obtain a large number of labeled data in practical applications. Therefore, how to utilize limited labels efficiently in the emotion recognition research become one bottleneck problem to overcome. In this work, a model architecture based on self-supervised double-flow twin network was proposed, which consisted of two interacting and learning branches of convolutional neural networks. First, the model was pre-trained. The amplified data of the input signal after two random signal transformations were input into the training branch and the target branch of the twin network. After extracting features from the convolutional module and the fully connected module in the branch, the model learned the general representation of the EEG signal in the process. Finally, the encoder part of the training branch was retained, and then the fully connected layer was used to fine-tune the model with labeled data, and the classification results are obtained. Data samples from public data sets SEED and SEED-IV were used to verify and evaluate the model classification effect. Under the fully labeled data, the classification accuracy of 93.92% and 89.71% were achieved, respectively. Under 50% label usage, the average accuracy of the three categories was 92.68%, which was only 1.24% less than that using all labels. The results showed that the model effectively extracted the general representation of EEG data, and achieved high recognition accuracy with relatively less labels.

Key words： emotion recognition self-supervised learning brain-computer interface two-flow network

Received: 01 February 2024

PACS:

R318

Corresponding Authors: ^*E-mail: mayuliang@ hdu.edu.cn

About author:: ^#中国生物医学工程学会会员(Member, Chinese Society of Biomedical Engineering)

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	Ma Yuliang
	Xie Yunzhen
	Meng Ming
	Gao Yunyuan
	She Qingshan

Cite this article:

Ma Yuliang,Xie Yunzhen,Meng Ming, et al. A Double-Stream Twin Contrast Network for EEG Emotion Recognition[J]. Chinese Journal of Biomedical Engineering, 2025, 44(4): 385-392.

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http://cjbme.csbme.org/EN/10.3969/j.issn.0258-8021.2025.04.001 OR http://cjbme.csbme.org/EN/Y2025/V44/I4/385

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