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arXiv 2112.09239cs.HCcs.SDeess.AS
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EEG-Transformer:用于解码想象语音的EEG的来自Transformer结构的自注意

EEG-Transformer: Self-attention from Transformer Architecture for Decoding EEG of Imagined Speech

Korea University(高丽大学)

Young-Eun Lee, Seo-Hyun Lee

摘要:

Transformers是突破性的架构,它改变了深度学习的流程,许多高性能模型都是基于Transformer架构开发的。Transformers只关注seq 2seq之后的编码器-解码器结构,而不使用RNN,但性能优于RNN。本文研究了由Transformer结构中的自我注意模块构成的脑电解码技术。我们使用基于EEGNet的卷积神经网络对9个受试者进行分类,该EEGNet从想象语音和公开语音的EEG中捕获时间-频谱-空间特征。此外,我们还将自注意模块应用于脑电信号的解码,以提高解码性能并减少参数数量。我们的研究结果表明,解码的大脑活动的想象的语音和公开的语音使用注意模块的可能性。此外,只有单通道EEG或耳EEG可以用于解码实际BCI的想象语音。

英文摘要:

Transformers are groundbreaking architectures that have changed a flow of deep learning, and many high-performance models are developing based on transformer architectures. Transformers implemented only with attention with encoder-decoder structure following seq2seq without using RNN, but had better performance than RNN. Herein, we investigate the decoding technique for electroencephalography (EEG) composed of self-attention module from transformer architecture during imagined speech and overt speech. We performed classification of nine subjects using convolutional neural network based on EEGNet that captures temporal-spectral-spatial features from EEG of imagined speech and overt speech. Furthermore, we applied the self-attention module to decoding EEG to improve the performance and lower the number of parameters. Our results demonstrate the possibility of decoding brain activities of imagined speech and overt speech using attention modules. Also, only single channel EEG or ear-EEG can be used to decode the imagined speech for practical BCIs.

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