一种基于同步提取变换和1维卷积神经网络的新发作预测方法
Jee Sook Ra1, Tianning Li1, YanLi1
1School of Mathematics, Physics and Computing, University of Southern Queensland, Toowoomba, QLD 4350, Australia.
Computer methods and programs in biomedicine
|July 7, 2023
概括
预测发作对于患者的安全至关重要. 这项研究引入了一种新的同步提取转换与单数值分解 (SET-SVD) 改进了脑电图 (EEG) 信号分析,实现了高分类精度.
科学领域:
- 生物医学工程 生物医学工程
- 信号处理 信号处理
- 神经学 神经学
背景情况:
- 影响全球5000多万人,需要准确的发作预测.
- 目前的脑电图 (EEG) 信号分析方法,如短期里埃转换 (STFT),受到海森堡不确定性原理的限制.
- 在EEG分析中提高时间频率分辨率可以提高预测的准确性.
研究的目的:
- 开发一种新的方法来分解性脑电图信号,并增强时间频率分辨率.
- 提高发作预测的准确性和可靠性.
- 将拟议方法的性能与传统技术进行比较.
主要方法:
- 在EEG信号分析中应用同步提取转换 (SET) 和奇数值分解 (SET-SVD).
- 与STFT相比,利用SET-SVD实现更高的能量度和更好的时间频分辨率.
- 采用一维卷积神经网络 (1D-CNN) 和多层感知子 (MLP) 进行预发作分类.
主要成果:
- 结合1D-CNN的SET-SVD方法,在CHB-MIT数据库中达到99.71%的准确率,在波恩大学数据库中达到100%.
- 与STFT相比,在CHB-MIT数据库中,SET-SVD的精度,灵敏度和特异性分别提高了8.12%,6.24%和13.91%.
- 当与MLP分类器一起使用时,SET-SVD也比STFT有所改善,其精度,灵敏度和特异性分别增加了5.0%,2.41%和11.42%.
结论:
- 该SET-SVD技术有效地从性EEG信号中提取比STFT更准确的信息.
- 1D-CNN模型非常适合快速准确地对患者进行特定的EEG分类.
- 这些发现表明,SET-SVD对推进发作预测具有重大潜力.
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