Tianjin University's MTGNet Denoises EEG, Lifting Fatigue Detection by Over 6 Points
EEG signals are only microvolts strong, so blinks, jaw clenching and muscle activity easily contaminate them. Researchers at Tianjin University and Tiangong University in northern China proposed MTGNet, a framework that suppresses these artifacts while preserving the information downstream tasks need. On the public EEGDenoiseNet dataset, it cut spectral relative root-mean-square error by 18.9%, 31.5% and 14.0% for EMG, EOG and mixed artifacts respectively; on a real-world fatigue EEG dataset, it raised classification accuracy by 6.20 to 6.69 percentage points over unprocessed input. Adapting the framework to a new task takes only 0.33 million low-rank adaptation (LoRA) parameters and no paired clean EEG reference.
Why it matters
EEG denoising has long faced a dilemma: the cleaner the filtering, the more task-relevant information may be stripped out with the noise. This work ties denoising to the downstream objective and replaces paired clean EEG references with 0.33 million lightweight adaptation parameters, sidestepping the lack of a ground truth in real-world recordings. The 18.9%, 31.5% and 14.0% reductions and the 6.20–6.69 percentage-point accuracy gain all come from one public dataset and a single fatigue dataset; performance across tasks and recording conditions has yet to be validated.