Flicker Noise Spectroscopy of Electrocardiographic Signals

Abdullaev, N. T.; Дышин, О. А.; Gasankulieva, M. M.

doi:10.1007/s10527-016-9546-x

Cited by 2 publications

(1 citation statement)

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“…The procedure for parameterizing the singular part of the signal consists of the following sequence of steps [3…”

Section: Parameterization Of the Singular Component Of The Ecg Signalmentioning

confidence: 99%

Flicker-Noise Spectroscopy Method in the Problem of Diagnosing the State of the Cardiovascular System

Tahir¹,

Ramiz²

2021

Data Acquisition - Recent Advances and Applications in Biomedical Engineering

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In the field of research of the cardiovascular system, mainly analysis methods that are strictly mathematically applicable to stationary signals are distinguished; however, nonstationary signals prevail in medical practice, the statistical properties of which vary with time. Often they consist of short-term high-frequency components, followed by long-term low-frequency components. Given this nature of bioelectric potentials, and in particular electrocardiographic signals, the most suitable for their analysis may be the nonlinear dynamics method with the calculation of quantitative characteristics of chaos. This possibility is presented by the flickernoise spectroscopy method, which takes into account the intermittency effect in a complex dynamic system when sections of chaotic bursts and jumps alternate with relatively long sections of a laminar nature. The analysis of signals of such a dynamic nature is usually based on the use of flicker-noise spectroscopy.

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“…The procedure for parameterizing the singular part of the signal consists of the following sequence of steps [3…”

Section: Parameterization Of the Singular Component Of The Ecg Signalmentioning

confidence: 99%

Flicker-Noise Spectroscopy Method in the Problem of Diagnosing the State of the Cardiovascular System

Tahir¹,

Ramiz²

2021

Data Acquisition - Recent Advances and Applications in Biomedical Engineering

View full text Add to dashboard Cite

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Atomic force microscopy for characterization of decellularized extracellular matrix (dECM) based materials

Batasheva,

Kotova,

Frolova

et al. 2024

Science and Technology of Advanced Materials

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In live organisms, cells are embedded in tissue-specific extracellular matrix (ECM), which provides chemical and mechanical signals important for cell differentiation, migration, and overall functionality. Careful reproduction of ECM properties in artificial cell scaffolds is necessary to get physiologically relevant results of in vitro studies and produce robust materials for cell and tissue engineering. Nanoarchitectonics is a contemporary way to building complex materials from nano-scale objects of artificial and biological origin. Decellularized ECM (dECM), remaining after cell elimination from organs, tissues and cell cultures is arguably the closest equivalent of native ECM achievable today. dECM-based materials can be used as templates or components for producing cell scaffolds using nanoarchitectonic approach. Irrespective of the form, in which dECM is used (whole acellular organ/tissue, bioink or hydrogel), the local stiffness of the dECM scaffold must be evaluated, since the fate of seeded cells depends on the mechanical properties of their environment. Careful dECM characterization is also necessary to reproduce essential ECM traits in artificial cell scaffolds by nanoparticle assembly. Atomic force microscopy (AFM) is a valuable characterization tool, as it allows simultaneous assessment of mechanical and topographic features of the scaffold, and additionally evaluate the efficiency of decellularization process and preservation of the extracellular matrix. This review depicts the current application of AFM in the field of dECM-based materials, including the basics of AFM technique and the use of flicker-noise spectroscopy (FNS) method for the quantification of the dECM micro- and nanostructure.

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Flicker Noise Spectroscopy of Electrocardiographic Signals

Cited by 2 publications

References 1 publication

Flicker-Noise Spectroscopy Method in the Problem of Diagnosing the State of the Cardiovascular System

Flicker-Noise Spectroscopy Method in the Problem of Diagnosing the State of the Cardiovascular System

Atomic force microscopy for characterization of decellularized extracellular matrix (dECM) based materials

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