College of Computer Science and Technology (College of Data Science), Taiyuan University of Technology, Taiyuan 030024, People's Republic of China.
School of Psychology, Shenzhen University, Shenzhen 518061, People's Republic of China.
J Neural Eng. 2024 Nov 8;21(6). doi: 10.1088/1741-2552/ad8bf3.
. Accurate and timely prediction of epileptic seizures is crucial for empowering patients to mitigate their impact or prevent them altogether. Current studies predominantly focus on short-term seizure predictions, which causes the prediction time to be shorter than the onset of antiepileptic, thus failing to prevent seizures. However, longer epilepsy prediction faces the problem that as the preictal period lengthens, it increasingly resembles the interictal period, complicating differentiation.. To address these issues, we employ the sample entropy method for feature extraction from electroencephalography (EEG) signals. Subsequently, we introduce the anchoring temporal convolutional networks (ATCN) model for longer-term, patient-specific epilepsy prediction. ATCN utilizes dilated causal convolutional networks to learn time-dependent features from previous data, capturing temporal causal correlations within and between samples. Additionally, the model also incorporates anchoring data to enhance the performance of epilepsy prediction further. Finally, we proposed a multilayer sliding window prediction algorithm for seizure alarms.. Evaluation on the Freiburg intracranial EEG dataset shows our approach achieves 100% sensitivity, a false prediction rate (FPR) of 0.09 per hour, and an average prediction time (APT) of 98.92 min. Using the CHB-MIT scalp EEG dataset, we achieve 97.44% sensitivity, a FPR of 0.12 per hour, and an APT of 93.54 min.. These results demonstrate that our approach is adequate for seizure prediction over a more extended prediction range on intracranial and scalp EEG datasets. The APT of our approach exceeds the typical onset time of antiepileptic. This approach is particularly beneficial for patients who need to take medication at regular intervals, as they may only need to take their medication when our method issues an alarm. This capability has the potential to prevent seizures, which will greatly improve patients' quality of life.
准确、及时地预测癫痫发作对于赋予患者减轻发作影响或预防发作的能力至关重要。目前的研究主要集中在短期癫痫发作预测上,这导致预测时间短于抗癫痫药物的作用时间,从而无法预防发作。然而,较长时间的癫痫预测面临的问题是,随着发作前期的延长,它越来越类似于发作间期,这使得区分变得更加困难。
为了解决这些问题,我们使用样本熵方法从脑电图 (EEG) 信号中提取特征。然后,我们引入锚定时间卷积网络 (ATCN) 模型,用于进行更长时间、针对特定患者的癫痫预测。ATCN 使用扩张因果卷积网络从先前的数据中学习时间相关特征,捕捉样本内和样本间的时间因果相关性。此外,该模型还利用锚定数据进一步提高癫痫预测的性能。最后,我们提出了一种多层滑动窗口预测算法用于发作警报。
在弗莱堡颅内 EEG 数据集上的评估表明,我们的方法实现了 100%的灵敏度、每小时 0.09 的假预测率 (FPR) 和 98.92 分钟的平均预测时间 (APT)。在使用 CHB-MIT 头皮 EEG 数据集时,我们实现了 97.44%的灵敏度、每小时 0.12 的 FPR 和 93.54 分钟的 APT。
这些结果表明,我们的方法在颅内和头皮 EEG 数据集上具有更长的预测范围,足以进行癫痫发作预测。我们方法的 APT 超过了抗癫痫药物的典型作用时间。对于需要定期服药的患者,这种方法尤其有益,因为只有当我们的方法发出警报时,他们才需要服药。这种能力有可能预防发作,从而极大地提高患者的生活质量。