Fractal and multifractal analysis: a review

R Lopes, N Betrouni - Medical image analysis, 2009 - Elsevier
Over the last years, fractal and multifractal geometries were applied extensively in many
medical signal (1D, 2D or 3D) analysis applications like pattern recognition, texture analysis …

Machine learning assisted wearable wireless device for sleep apnea syndrome diagnosis

S Wang, W Xuan, D Chen, Y Gu, F Liu, J Chen, S Xia… - Biosensors, 2023 - mdpi.com
Sleep apnea syndrome (SAS) is a common but underdiagnosed health problem related to
impaired quality of life and increased cardiovascular risk. In order to solve the problem of …

Research progress in nonlinear analysis of heart electric activities

X Ning, C Bian, J Wang, Y Chen - Chinese Science Bulletin, 2006 - Springer
Nonlinear science research is a hot point in the world. It has deepened our cognition of
determinism and randomicity, simplicity and complexity, noise and order and it will …

Universal spectral profile and dynamic evolution of muscle activation: a hallmark of muscle type and physiological state

S Garcia-Retortillo, R Rizzo… - Journal of Applied …, 2020 - journals.physiology.org
The skeletal muscle is an integrated multicomponent system with complex dynamics of
continuous myoelectrical activation of various muscle types across time scales to facilitate …

Analysis of heartbeat asymmetry based on multi-scale time irreversibility test

F Hou, J Zhuang, C Bian, T Tong, Y Chen, J Yin… - Physica A: Statistical …, 2010 - Elsevier
We investigate the asymmetry of heart rate control system and suggest a simple index to
quantify this asymmetry by performing high-dimensional time irreversibility tests to heartbeat …

Multifractal analysis of ventricular fibrillation and ventricular tachycardia

G Wang, H Huang, H Xie, Z Wang, X Hu - Medical engineering & physics, 2007 - Elsevier
A study of ventricular fibrillation and ventricular tachycardia was undertaken using
multifractal analysis. By applying the method of direct determination of the f (α) singularity …

Multifractal analysis of surface EMG signals for assessing muscle fatigue during static contractions

G Wang, X Ren, L Li, Z Wang - Journal of Zhejiang University-Science A, 2007 - Springer
This study is aimed at assessing muscle fatigue during a static contraction using multifractal
analysis and found that the surface electromyographic (SEMG) signals characterized …

Extensions to a manifold learning framework for time-series analysis on dynamic manifolds in bioelectric signals

B Erem, R Martinez Orellana, DE Hyde, JM Peters… - Physical Review E, 2016 - APS
This paper addresses the challenge of extracting meaningful information from measured
bioelectric signals generated by complex, large scale physiological systems such as the …

Exploring multifractal‐based features for mild Alzheimer's disease classification

H Ni, L Zhou, X Ning, L Wang… - Magnetic resonance …, 2016 - Wiley Online Library
Purpose Multifractal applications to resting state functional MRI (rs‐fMRI) time series for
diagnosing Alzheimer's disease (AD) are still limited. We aim to address two issues:(I) if and …

Identification of healthy and pathological heartbeat dynamics based on ECG-waveform using multifractal spectrum

X Yang, Z Wang, A He, J Wang - Physica A: Statistical Mechanics and its …, 2020 - Elsevier
Human body surface electrocardiogram (ECG) is non-stationary and frequency-varying by
nature that belongs to a typical nonlinear signal. Therefore, traditional linear and time …