EEG-ConvTransformer for Single-Trial EEG based Visual Stimuli Classification

• URL: http://arxiv.org/abs/2107.03983v1
• Date: Thu, 8 Jul 2021 17:22:04 GMT
• Title: EEG-ConvTransformer for Single-Trial EEG based Visual Stimuli Classification
• Authors: Subhranil Bagchi and Deepti R. Bathula
• Abstract summary: This work introduces an EEG-ConvTranformer network that is based on multi-headed self-attention. It achieves improved classification accuracy over the state-of-the-art techniques across five different visual stimuli classification tasks.
• Score: 5.076419064097734
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Different categories of visual stimuli activate different responses in the human brain. These signals can be captured with EEG for utilization in applications such as Brain-Computer Interface (BCI). However, accurate classification of single-trial data is challenging due to low signal-to-noise ratio of EEG. This work introduces an EEG-ConvTranformer network that is based on multi-headed self-attention. Unlike other transformers, the model incorporates self-attention to capture inter-region interactions. It further extends to adjunct convolutional filters with multi-head attention as a single module to learn temporal patterns. Experimental results demonstrate that EEG-ConvTransformer achieves improved classification accuracy over the state-of-the-art techniques across five different visual stimuli classification tasks. Finally, quantitative analysis of inter-head diversity also shows low similarity in representational subspaces, emphasizing the implicit diversity of multi-head attention.

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