The detection of transient directional couplings based on phase synchronization
The detection of transient directional couplings based on phase synchronization
复制标题
基于相位同步的瞬态定向耦合检测
DOI：
10.1088/1367-2630/12/5/053031
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发表时间：
2010
影响因子：
3.3
通讯作者：
Klaus Lehnertz
中科院分区：
文献类型：
--
作者：
Tobias Wagner;Jürgen Fell;Klaus Lehnertz
我们基于相位同步的概念扩展了最近的方法，使得能够从短的和瞬时的噪声时间序列中以时间分辨的方式研究耦合动力系统之间的方向关系。对于我们的方法，我们将观察到的足够大数量的时间序列的集成视为一个过程的多个实现。我们推导出一个量化瞬时相互作用方向的指数，并使用代理技术评估其统计意义。通过对噪声和混沌系统时间序列的分析，我们用数值方法证明了该方法的适用性和局限性。我们的发现来自对事件相关大脑活动的示范应用，强调了我们的方法对于提高对人类记忆形成机制的认识的重要性。
We extend recent approaches based on the concept of phase synchronization to enable the time-resolved investigation of directional relationships between coupled dynamical systems from short and transient noisy time series. For our approach, we consider an observed ensemble of a sufficiently large number of time series as multiple realizations of a process. We derive an index that quantifies the direction of transient interactions and assess its statistical significance using surrogate techniques. Analysing time series from noisy and chaotic systems, we demonstrate numerically the applicability and limitations of our approach. Our findings from an exemplary application to event-related brain activities underline the importance of our method for improving knowledge about the mechanisms underlying memory formation in humans.
影响因子：
3.7
作者：
Schinkel, Stefan;Marwan, Norbert;Kurths, Juergen
通讯作者：
Kurths, Juergen