arXiv:2410.03385cs.LGq-bio.NC2024-10被引 9

用深度学习直接分析原始脑电波,实现癫痫发作的精准检测。

From Epilepsy Seizures Classification to Detection: A Deep Learning-based Approach for Raw EEG Signals

  • 构建端到端检测流程,无需预先区分发作与非发作段。
  • 跨物种验证成功,在人类数据上达到93%的F1分数。
  • 提出严格事件对比评估法,揭示分类与检测任务本质差异。

癫痫是全球最常见的神经系统疾病,三分之一的海马颞叶癫痫患者对药物治疗无响应,亟需新疗法。抗癫痫药物疗效评估的关键在于准确检测和量化脑电图(EEG)中的癫痫发作。本文提出一种基于深度学习的原始EEG信号癫痫发作检测流水线,包含三项创新:一是无需事先区分发作与非发作的新型预处理分割技术;二是用于重构片段并精确定位发作起止点的后处理算法;三是基于严格发作事件比对的新评估方法。模型训练采用防数据泄露的数据划分策略。研究揭示了癫痫分类与检测任务的本质差异及其性能差异。最终,所提结合卷积神经网络与Transformer编码器的最佳架构展现出强泛化能力:在动物数据上训练、人类数据上测试,于平衡的Bonn数据集上获得93%的F1分数。

原文摘要 · Abstract (English)

Epilepsy represents the most prevalent neurological disease in the world. One-third of people suffering from mesial temporal lobe epilepsy (MTLE) exhibit drug resistance, urging the need to develop new treatments. A key part in anti-seizure medication (ASM) development is the capability of detecting and quantifying epileptic seizures occurring in electroencephalogram (EEG) signals, which is crucial for treatment efficacy evaluation. In this study, we introduced a seizure detection pipeline based on deep learning models applied to raw EEG signals. This pipeline integrates: a new pre-processing technique which segments continuous raw EEG signals without prior distinction between seizure and seizure-free activities; a post-processing algorithm developed to reassemble EEG segments and allow the identification of seizures start/end; and finally, a new evaluation procedure based on a strict seizure events comparison between predicted and real labels. Models training have been performed using a data splitting strategy which addresses the potential for data leakage. We demonstrated the fundamental differences between a seizure classification and a seizure detection task and showed the differences in performance between the two tasks. Finally, we demonstrated the generalization capabilities across species of our best architecture, combining a Convolutional Neural Network and a Transformer encoder. The model was trained on animal EEGs and tested on human EEGs with a F1-score of 93% on a balanced Bonn dataset.

癫痫检测深度学习脑电图跨物种

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