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16 Result(s)

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  1. No Access

    Article

    Multifractal analysis of resting state fMRI series in default mode network: age and gender effects

    Age-related changes of resting state in default mode network (DMN) may provide new clues to the develo** mechanism of normal brain as well as early diagnosis and therapy of some neuropsychiatric disorders. T...

    Huang**g Ni, **aolin Huang, **nbao Ning, Chengyu Huo… in Chinese Science Bulletin (2014)

  2. No Access

    Article

    Multifractal mass exponent spectrum of complex physiological time series

    Physiological signal belongs to the kind of nonstationary and time-variant ones. Thus, the nonlinear analysis methods may be better to disclose its characteristics and mechanisms. There have been plenty of evi...

    **aoDong Yang, AiJun He, Yong Zhou, **nBao Ning in Chinese Science Bulletin (2010)

  3. No Access

    Article

    Sign series entropy analysis of short-term heart rate variability

    Complexity and nonlinearity approaches can be used to study the temporal and structural order in heart rate variability (HRV) signal, which is helpful for understanding the underlying rule and physiological es...

    ChunHua Bian, QianLi Ma, JunFeng Si, XuHui Wu, Jun Shao… in Chinese Science Bulletin (2009)

  4. No Access

    Article

    Multiscale analysis of heart beat interval increment series and its clinical significance

    Analysis of multiscale entropy (MSE) and multiscale standard deviation (MSD) are performed for both the heart rate interval series and the interval increment series. For the interval series, it is found that, ...

    **aoLin Huang, **nBao Ning, **nLong Wang in Chinese Science Bulletin (2009)

  5. No Access

    Article

    Nonlinear short-term heart rate variability prediction of spontaneous ventricular tachyarrhythmia

    As malign ventricular tachyarrhythmias triggering sudden cardiac death (SCD), both ventricular tachycardia (VT) and ventricular fibrillation (VF) are major causes of mortality. The most efficient therapy for S...

    JianJun Zhuang, **nBao Ning, SiDan Du, ZhenZhou Wang… in Chinese Science Bulletin (2008)

  6. No Access

    Article

    RETRACTED ARTICLE: A non-commutative time-frequency tomography

    The characterization of non-stationary signal requires joint time and frequency information. However, time and frequency are a pair of non-commuting variables that cannot constitute a joint probability density...

    JianCai Liu, JiaKai Xu, **nBao Ning, Run Tian in Chinese Science Bulletin (2007)

  7. No Access

    Article

    A new measure to characterize multifractality of sleep electroencephalogram

    Traditional methods for nonlinear dynamic analysis, such as correlation dimension, Lyapunov exponent, approximate entropy, detrended fluctuation analysis, using a single parameter, cannot fully describe the ex...

    Qianli Ma, **nbao Ning, Jun Wang, Chunhua Bian in Chinese Science Bulletin (2006)

  8. No Access

    Article

    The SARD variety of multifractality of ventricular epicardial map** during ischemia

    We have analyzed cardiac ischemia-reperfusion in an animal model using epicardial electropotential map**. We investigated the relationship between ischemia and variability of multifractality in epicardial el...

    Ying Chen, Martyn P. Nash, **nbao Ning, Yelin Wang… in Chinese Science Bulletin (2006)

  9. No Access

    Article

    Research progress in nonlinear analysis of heart electric activities

    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 profoundly influence the progress of...

    **nbao Ning, Chunhua Bian, Jun Wang, Ying Chen in Chinese Science Bulletin (2006)

  10. No Access

    Article

    The base-scale entropy analysis of short-term heart rate variability signal

    The complexity of heart rate variability (HRV) signal can reflect physiological functions and healthy status of heart system. Detecting complexity of the short-term HRV signal has an important practical meanin...

    ** Li, **nbao Ning in Chinese Science Bulletin (2005)

  11. No Access

    Article

    Mode entropy and dynamical analysis of irregularity for HFECG

    A new algorithm—ModEn (mode entropy) is proposed by analyzing and modifying ApEn (approximate entropy), so that the irregular analysis can be applied to the time series of short-term signals with broad amplitu...

    Yinlin Xu, **nbao Ning, Ying Chen, Jun Wang in Chinese Science Bulletin (2004)

  12. No Access

    Article

    Nonlinearity degree of short-term heart rate variability signal

    A nonlinear autoregressive (NAR) model is built to model the heartbeat interval time series and the optimum model degree is proposed to be taken to evaluate the nonlinearity degree of heart rate variability (H...

    Chunhua Bian, **nbao Ning in Chinese Science Bulletin (2004)

  13. No Access

    Article

    Prediction of ventricular fibrillation based on nonlinear multi-parameter

    Ventricular fibrillation (VF) caused by myocardial ischemia is one of the leading factors of death attributed to cardiovascular diseases. It is particularly significant to predict VF and gain valuable time for...

    Junfeng Si, **nbao Ning, Lingling Zhou, Song Zhang in Chinese Science Bulletin (2003)

  14. No Access

    Article

    Interleaving distribution of multifractal strength of 16-channel EEG signals

    Multifractal characteristics of 16-channel human electroencephalogram (EEG) signals under eye-closed rest are analyzed for the first time. The result shows that the EEGs from the different sites on the scalp h...

    Wei Wang, **nbao Ning, Jun Wang, Sheng Zhang, Jie Chen… in Chinese Science Bulletin (2003)

  15. No Access

    Article

    Lyapunov exponents for synchronous 12-lead ECG signals

    The Lyapunov exponents of synchronous 12-lead ECG signals have been investigated for the first time using a multi-sensor (electrode) technique. The results show that the Lyapunov exponents computed from differ...

    Zhenzhou Wang, Zheng Li, Yixiang Wei, **nbao Ning, Yuzheng Lin in Chinese Science Bulletin (2002)

  16. No Access

    Article

    Distribution of correlation dimensions of synchronous 12-lead ECG signals

    Correlation dimensionsD 2 of the synchronous 12-lead ECG signals have been investigated for the first time by distributed multi-sensor (multi-electrode) technique. The results show that correlatio...

    Zhenzhou Wang, **nbao Ning, Yu Zhang, Gonghuan Du in Chinese Science Bulletin (2000)