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Multi-scale convolutional transformer network for motor imagery brain-computer interface

delete2025-04-15
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OA
AI
W
Wei Zhao
B
Baocan Zhang
H
Haifeng Zhou *
D
Dezhi Wei
C
Chenxi Huang
DOI:10.1038/s41598-025-96611-5delete
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摘要

摘要

En 中文
脑机接口(BCI)系统通过将神经信号转化为实时指令,使用户能够与外部设备进行通信。卷积神经网络(CNNs)已被有效用于解码脑机接口中的运动想象脑电图(MI-EEG)信号。然而,基于传统CNN的方法面临着脑电图信号个体差异性和CNN感受野有限的挑战。本研究提出了一种多尺度卷积Transformer(MSCFormer)模型,该模型整合了多个CNN分支进行多尺度特征提取,并采用Transformer模块捕捉全局依赖关系,随后通过全连接层进行分类。多分支多尺度CNN结构有效解决了脑电图信号的个体差异性,增强了模型的泛化能力,而Transformer编码器则加强了全局特征整合并提升了解码性能。在BCI IV-2a和IV-2b数据集上的大量实验表明,MSCFormer在五折交叉验证中分别实现了82.95%(BCI IV-2a)和88.00%(BCI IV-2b)的平均准确率,kappa值分别为0.7726和0.7599,超越了多种当前最先进的方法。这些结果突显了MSCFormer的鲁棒性和准确性,强调了其在基于脑电图的BCI应用中的潜力。代码已发布于https://github.com/snailpt/MSCFormer。
Keyword:
Brain-computer interface (BCI)
Convolutional neural networks (CNNs)
Electroencephalography (EEG)
Motor imagery (MI)
Transformer

期刊

Scientific Reports 封面图
Scientific Reports
IF:
3.9
论文数:
28.0W
被引数:
83.5W

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