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首页> 外文期刊>Biomedizinische Technik >A processing scheme for time-variant phase analysis in EEG burst activity of premature and full-term newborns in quiet sleep: a methodological study
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A processing scheme for time-variant phase analysis in EEG burst activity of premature and full-term newborns in quiet sleep: a methodological study

机译：一种安静睡眠中早产和足月新生儿脑电爆发活动时变相位分析的处理方案：方法学研究

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摘要

A processing scheme for the investigation of neonatal electroencephalographic burst oscillations that is composed of time-variant methods for linear and nonlinear phase analysis is introduced. Starting from a time-frequency analysis of oscillations' amplitudes, time-variant approaches for quantification of phase locking, n:m phase synchronization, and quadratic phase coupling are applied. Trace discontinue patterns from premature newborns and trace alternant patterns from full-term newborns were investigated using bipolar EEG recordings. Maturation-related differences between the burst generation mechanisms can be shown, which are reflected in group-specific patterns of augmentation, timing, and grouping of time-varying phase characteristics of the EEG burst oscillations. We demonstrate for both groups (premature and full-term newborns) that phase-locked low-frequency oscillations are pronounced in the frequency range of 0.5-1.5 Hz. Phase-locked oscillations also occur in a frequency range of >3 Hz. The amplitude of a phase-locked 2-Hz oscillation is higher in full-term than in premature newborns. After onset, n:m synchronization and an increase in bicoherence occur earlier in the premature group (between 0.5-1.5 Hz and 3.0-6.0 Hz). It can be suggested that during the maturation process, the driving force of thalamic structures decreases and that cortical activity plays an increasingly important role in the process of burst generation.
机译：介绍了一种用于研究新生儿脑电图猝发振荡的​​处理方案，该方案由时变方法组成，用于线性和非线性相位分析。从振荡幅度的时频分析开始，采用时变方法来量化锁相，n：m相位同步和二次相位耦合。使用双极EEG记录研究了早产儿的痕量中断模式和足月儿的痕量交替模式。可以显示突发生成机制之间与成熟度相关的差异，这反映在EEG突发振荡的时变相位特征的分组，增强，定时和分组的特定组模式中。我们证明了两组（早产和足月新生儿）在0.5-1.5 Hz的频率范围内都有明显的锁相低频振荡。锁相振荡也会在> 3 Hz的频率范围内发生。足月2 Hz锁相振荡的幅度比早产儿高。发病后，早产组较早出现n：m同步和双相干性增加（0.5-1.5 Hz至3.0-6.0 Hz之间）。可以认为，在成熟过程中，丘脑结构的驱动力降低，并且皮层活动在爆发过程中起着越来越重要的作用。

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  • 来源
    《Biomedizinische Technik》 |2012年第6期|491-505|共15页
  • 作者

    Matthias Wacker; Karin Schiecke; Peter Putsche; Michael Eiselt; Herbert Witte;

  • 作者单位

    Bernstein Group for Computational Neuroscience Jena, Institute of Medical Statistics, Computer Sciences and Documentation, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany;

    Bernstein Group for Computational Neuroscience Jena, Institute of Medical Statistics, Computer Sciences and Documentation, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany;

    Bernstein Group for Computational Neuroscience Jena, Institute of Medical Statistics, Computer Sciences and Documentation, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany;

    Bernstein Group for Computational Neuroscience Jena, Institute of Medical Statistics, Computer Sciences and Documentation, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany;

    Jena University Hospital,Friedrich Schiller University of Jena, Institute of Medical Statistics, Computer Sciences and Documentation, 07743 Jena, Germany,Bernstein Group for Computational Neuroscience Jena, Institute of Medical Statistics, Computer Sciences and Documentation, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany;

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  • 正文语种 eng
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  • 关键词

    EEG; phase analysis; quiet sleep; trace alternant; trace discontinue;

    机译：脑电图;相分析;安静的睡眠;痕迹交替跟踪中断;

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