1.3k citations · 3.1k across the 8 of their papers we have counts for
7 papers
Spurious detection of phase synchronization in coupled nonlinear oscillators
Limei Xu, Zhi Chen, Kun Hu +2
Coupled nonlinear systems under certain conditions exhibit phase synchronization, which may change for different frequency bands or with presence of additive system noise. In both…
Cross-Correlation of Instantaneous Phase Increments in Pressure-Flow Fluctuations: Applications to Cerebral Autoregulation
Zhi Chen, Kun Hu, H. Eugene Stanley +2
We investigate the relationship between the blood flow velocities (BFV) in the middle cerebral arteries and beat-to-beat blood pressure (BP) recorded from a finger in healthy and p…
Quantifying signals with power-law correlations: A comparative study of detrended fluctuation analysis and detrended moving average techniques
L. Xu, P. Ch. Ivanov, K. Hu +3
Detrended fluctuation analysis (DFA) and detrended moving average (DMA) are two scaling analysis methods designed to quantify correlations in noisy non-stationary signals. We syste…
Effect of nonlinear filters on detrended fluctuation analysis
Z. Chen, K. Hu, P. Carpena +3
We investigate how various linear and nonlinear transformations affect the scaling properties of a signal, using the detrended fluctuation analysis (DFA). Specifically, we study th…
Steady-state visual evoked potentials and phase synchronization in migraine
L. Angelini, M. De Tommaso, M. Guido +8
We investigate phase synchronization in EEG recordings from migraine patients. We use the analytic signal technique, based on the Hilbert transform, and find that migraine brains a…
Effect of nonstationarities on detrended fluctuation analysis
Zhi Chen, Plamen Ch. Ivanov, Kun Hu +1
Detrended fluctuation analysis (DFA) is a scaling analysis method used to quantify long-range power-law correlations in signals. Many physical and biological signals are ``noisy'',…