Hassan M, Terrien J, Alexandersson A, Marque C, Karlsson B
School of Science and Engineering, Reykjavik University, 103 Iceland.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:4642-5. doi: 10.1109/IEMBS.2010.5626486.
Most of the studies on the synchronization between EHG signals, recorded during the same contractions at different locations, are limited to the use of only two channels. Multichannel techniques have however been widely applied to EEG signals but rarely to EHG. In this paper, we investigate the use of multichannel uterine EMG signals for classifying contractions. We compare the performance of phase synchronization in distinguishing between labor and normal pregnancy contractions by using either only two channels or a 4x4 matrix positioned on the woman's abdomen. We used two indexes to measure the phase synchronization: mean phase coherence and phase entropy. ROC curves indicate that the use of multichannel signals can significantly improve the classification rate of pregnancy and labor contractions.
大多数关于在不同位置同时记录的子宫肌电信号（EHG）同步性的研究，仅限于使用两个通道。然而，多通道技术已广泛应用于脑电图（EEG）信号，但很少应用于EHG。在本文中，我们研究了使用多通道子宫肌电图信号对宫缩进行分类。我们通过仅使用两个通道或放置在女性腹部的4x4矩阵，比较了相位同步在区分分娩和正常妊娠宫缩方面的性能。我们使用两个指标来测量相位同步：平均相位相干性和相位熵。ROC曲线表明，使用多通道信号可以显著提高妊娠和分娩宫缩的分类率。
