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Dynamic Convolution With Multilevel Attention for EEG-Based Motor Imagery Decoding
DOI:10.1109/JIOT.2023.3281911.png)
摘要
En 中文
Brain-computer interface (BCI) is an innovative technology that utilizes artificial intelligence (AI) and wearable electroencephalography (EEG) sensors to decode brain signals and enhance the quality of life. EEG-based motor imagery (MI) brain signal is used in many BCI applications, including smart healthcare, smart homes, and robotics control. However, the restricted ability to decode brain signals is a major factor preventing BCI technology from expanding significantly. In this study, we introduce a dynamic attention temporal convolutional network (D-ATCNet) for decoding EEG-based MI signals. The D-ATCNet model uses dynamic convolution (Dy-conv) and multilevel attention to enhance the performance of MI classification with a relatively small number of parameters. D-ATCNet has two main blocks: 1) dynamic and 2) temporal convolution. Dy-conv uses multilevel attention to encode low-level MI-EEG information and temporal convolution uses shifted window with self-attention to extract high-level temporal information from the encoded signal. The proposed model performs better than the existing methods with an accuracy of 71.3% for subject independent and 87.08% for subject dependent using the BCI competition IV-2a data set.
Keyword:
Convolution
Electroencephalography
Convolutional neural networks
Brain modeling
Decoding
Kernel
Feature extraction
Attention mechanism
classification
convolutional neural network (CNN)
dynamic convolution (Dy-conv)
electroencephalography (EEG)
motor imagery (MI)
multihead self-attention (MSA)
smart healthcare
期刊
IF:
8.9
论文数:
1.4W
被引数:
7.8W
机构
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