arXiv:2603.20258eess.SPcs.AI2026-03

用脑电模板初始化网络,提升单次脑电信号的事件相关电位检测能力。

The Deep-Match Framework for Event-Related Potential Detection in EEG

  • 用双阶段训练:先重建信号学特征,再替换解码器专注检测。
  • 引入脑电模板初始化权重,平均F1得分达0.37,最高达0.71。
  • 适合开发可穿戴脑机接口,实现实时认知状态监测。

单次脑电信号中可靠检测事件相关电位(ERPs)仍面临挑战,主要因信噪比低。本文研究将ERP模板作为先验知识融入深度学习模型是否能提升检测性能。提出Deep-Match框架,利用多通道脑电信号进行检测。模型分两阶段训练:首先使用编码器-解码器结构重建输入信号,学习紧凑信号表示;第二阶段替换解码器为检测模块,并微调网络以识别ERP。评估两种变体:标准模型(随机初始化滤波器)与Deep-MF模型(使用ERP模板初始化输入核)。在留一被试验证下,大多数被试中Deep-MF表现更优。尽管存在显著个体差异,Deep-MF平均F1得分为0.37,高于标准模型的0.34,显示更强跨被试鲁棒性。最佳情况下,Deep-MF F1达0.71,超过标准模型最高0.59。结果表明,基于ERP的核初始化能持续提升无监督单次ERP检测效果。研究凸显了将领域知识与深度学习结合在脑电分析中的潜力,为实现可穿戴脑机接口和实时认知监测系统迈出一步。

原文摘要 · Abstract (English)

Reliable detection of event-related potentials (ERPs) at the single-trial level remains a major challenge due to the low signal-to-noise ratio EEG recordings. In this work, we investigate whether incorporating prior knowledge about ERP templates into deep learning models can improve detection performance. We employ the Deep-Match framework for ERP detection using multi-channel EEG signals. The model is trained in two stages. First, an encoder-decoder architecture is trained to reconstruct input EEG signals, enabling the network to learn compact signal representations. In the second stage, the decoder is replaced with a detection module, and the network is fine-tuned for ERP identification. Two model variants are evaluated: a standard model with randomly initialized filters and a Deep-MF model in which input kernels are initialized using ERP templates. Model performance is assessed on a single-trial ERP detection task using leave-one-subject-out validation. The proposed Deep-MF model slightly outperforms the detector with standard kernel initialization for most held-out subjects. Despite substantial inter-subject variability, Deep-MF achieves a higher average F1-score (0.37) compared to the standard network (0.34), indicating improved robustness to cross-subject differences. The best performance obtained by Deep-MF reaches an F1-score of 0.71, exceeding the maximum score achieved by the standard model (0.59). These results demonstrate that ERP-informed kernel initialization can provide consistent improvements in subject-independent single-trial ERP detection. Overall, the findings highlight the potential of integrating domain knowledge with deep learning architectures for EEG analysis. The proposed approach represents a step toward practical wearable EEG and passive brain-computer interface systems capable of real-time monitoring of cognitive processes.

脑电分析深度学习事件相关电位脑机接口

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