Results 21 to 30 of about 19,048 (257)
Frontiers in Physiology, 2022 Background and PurposeMost studies on heart rate variability (HRV) in professional athletes concerned linear, time-, and frequency-domain indices, and there is lack of studies on non-linear parameters in this group. The study aimed to determine the inter-
Jakub S. Gąsior +6 more
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Measuring Dynamical Uncertainty With Revealed Dynamics Markov Models
Frontiers in Applied Mathematics and Statistics, 2019 Concepts and measures of time series uncertainty and complexity have been applied across domains for behavior classification, risk assessments, and event detection/prediction.
Aaron Bramson +5 more
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Musical Collaboration in Rhythmic Improvisation
Entropy, 2020 Despite our intimate relationship with music in every-day life, we know little about how people create music. A particularly elusive area of study entails the spontaneous collaborative musical creation in the absence of rehearsals or scripts. Toward this
Shinnosuke Nakayama +2 more
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On Structured Random Matrices Defined by Matrix Substitutions
Mathematics, 2023 The structure of the random matrices introduced in this work is given by deterministic matrices—the skeletons of the random matrices—built with an algorithm of matrix substitutions with entries in a finite field of integers modulo some prime number, akin
Manuel L. Esquível, Nadezhda P. Krasii
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Frontiers in Computational Neuroscience, 2020 Dynamic Functional Connectivity (DFC) analysis is a promising approach for the characterization of brain electrophysiological activity. In this study, we investigated abnormal alterations due to mild Traumatic Brain Injury (mTBI) using DFC of the source ...
Marios Antonakakis +10 more
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On a Dynamical Approach to Some Prime Number Sequences
Entropy, 2018 We show how the cross-disciplinary transfer of techniques from dynamical systems theory to number theory can be a fruitful avenue for research. We illustrate this idea by exploring from a nonlinear and symbolic dynamics viewpoint certain patterns ...
Lucas Lacasa +3 more
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Kinematics in Biology: Symbolic Dynamics Approach
Mathematics, 2020 Motion in biology is studied through a descriptive geometrical method. We consider a deterministic discrete dynamical system used to simulate and classify a variety of types of movements which can be seen as templates and building blocks of more complex ...
Carlos Correia Ramos
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Life, 2023 The aim of this study was to assess whether the heart rate variability (HRV) could predict a favorable or unfavorable stroke outcome. The endpoint was based on the National Institutes of Health Stroke Scale (NIHSS).
Joanna Aftyka +4 more
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Entropy, 2019 Atrial fibrillation (AF) is related to a very complex local electrical activity reflected in the rich morphology of intracardiac electrograms. The link between electrogram complexity and efficacy of the catheter ablation is unclear.
Katarzyna Stępień +5 more
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Sensors, 2016 In this paper, we propose an effective human and nonhuman pyroelectric infrared (PIR) signal recognition method to reduce PIR detector false alarms. First, using the mathematical model of the PIR detector, we analyze the physical characteristics of the ...
Jiaduo Zhao +3 more
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