Jun 20, 2019 · The weighted Phase Lag Index (wPLI) and the weighted Symbolic Mutual Information (wSMI) represent two robust and widely used methods for MEG/EEG functional connectivity estimation.

Mar 10, 2025 · Both wPLI and dPLI are extensions upon the original PLI method, and provide complementary information about underlying connectivity. To identify the presence of an underlying phase relationship, wPLI is the method of choice for most researchers as it provides an improvement in robustness over the original PLI method

Mar 29, 2022 · ③加权相位滞后指数 Weighted Phase-Lag Index (WPLI)： 加权后的PLI，被称为WPLI，用如下公式计算，其中. 是x(t)和y(t)之间的交叉谱的虚分量。0≤WPLI≤1，其中0代表不同步，1表示同步。 注：与其他相位同步指数(PS)相反，WPLI混合了相位和振幅信息。之所以将其列入 …

Apr 15, 2011 · We demonstrate two advantages of the WPLI over the PLI, in terms of reduced sensitivity to additional, uncorrelated noise sources and increased statistical power to detect changes in phase-synchronization. Another factor that can affect phase-synchronization indices is sample-size bias.

Jul 24, 2012 · The next metric in this progression that could be used for reducing movement artifacts in EEG is the Weighted Phase Lag Index (WPLI). WPLI was introduced recently [15]. It extends Stam’s PLI measure, by introducing a phase-difference weighting normalization.

WPLI (1390 AM) is a commercial radio station licensed to Lynchburg, Virginia. WPLI simulcasts a sports radio format with WPLY 610 AM in Roanoke. Both stations are owned and operated by Mel Wheeler, Inc. [5] Most programming is supplied by Fox Sports Radio.

Aug 1, 2024 · wPLI is a method developed to overcome the limitations posed by volume conduction in coherence analysis. It measures the asymmetry of the phase differences between two signals, which helps to mitigate the influence of zero-lag (or near-zero-lag) components likely caused by volume conduction.

Feb 4, 2019 · An extension to PLI, weighted PLI (wPLI) was introduced to de-weight vectors that are closer to the real axis (thus reflecting instantaneous mixing), such that those vectors have a smaller influence on the final PLI value [3].

The parameter wPLI is a novel measurement of phase synchronization and has potentials in understanding underlying functional connectivity and aiding in the diagnostics of AD. Increased theta PSD and decreased delta wPLI may be one of the earliest changes in AD and associated with disease severity.

Jun 26, 2023 · 文中提到了几种常用的脑电功能连接指标，如皮尔逊相关系数、相干、相位同步指标（如PLV/PLI/wPLI）以及基于格兰杰因果和信息论的方法，阐述了它们的优缺点及应用场合。 什么是功能连接？ 意思是，即使两个电极或者两个脑区之间的功能层面的联系很强，也并不能说明这两个脑区之间存在神经元 (结构层面)，将这两个脑区连在一起。 皮尔逊相关系数用于脑电研究的局限性：（1）有负值：如何解释负相关？ （2）不能提供频域信息，不能告知每个频段的相关 …