Single Shot Reversible GAN for BCG artifact removal in simultaneous EEG-fMRI
CoRR(2020)
Abstract
Simultaneous EEG-fMRI acquisition and analysis tech-nology has been widely used in various research fields of brain science. However, how to remove the ballistocardi-ogram (BCG) artifacts in this scenario remains a huge challenge. Because it is impossible to obtain clean and BCG-contaminated EEG signals at the same time, BCG ar-tifact removal is a typical unpaired signal-to-signal prob-lem. To solve this problem, this paper proposed a new GAN training model - Single Shot Reversible GAN (SSRGAN). The model is allowing bidirectional input to better combine the characteristics of the two types of sig-nals, instead of using two independent models for bidirec-tional conversion as in the past. Furthermore, the model is decomposed into multiple independent convolutional blocks with specific functions. Through additional train-ing of the blocks, the local representation ability of the model is improved, thereby improving the overall model performance. Experimental results show that, compared with existing methods, the method proposed in this paper can remove BCG artifacts more effectively and retain the useful EEG information.
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