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Showing 1 to 14 of 14 for “"approximate entropy"”.
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Moving approximate entropy and its application to the electromyographic control of an artificial hand
… electromyographic signals. A new method, moving approximate entropy was employed to investigate whether any significant patterns can be observed in the structure of the electromyographic signals. An investigation, using moving approximate entropy, on twenty healthy participants' wrist muscles …
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Quantification of regularity in RR-interval time series using approximate entropy, sample entropy, and multi-scale entropy
… the nonlinear fluctuations in heart rate. Approximate Entropy (ApEn), Sample Entropy (SampEn) and Multi-scale Entropy (MSE) are measures based on chaos theory that quantify the regularity in time series. This study has been designed to examine the ability of these measures to distinguish …
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Exploring Motor Learning Differences between Elite and Non-Elite Athletes Using Nonlinear Dynamical Analysis
… test the efficacy of nonlinear analysis, such as approximate entropy (ApEn), to effectively discriminate between elite and non-elite athletes data. Using approximate entropy, we were able to discriminate between elite and non-elite athletes by discerning the level of regularity present in each …
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Characterization of hypertension through multivariate analysis utilizing linear and nonlinear methods
… The nonlinear analysis methods included approximate entropy (ApEn), detrended fluctuation analysis (DFA) and Poincare mapping. Analysis was performed hourly, averaged by group and presented as the mean +1- the standard deviation. Results from linear analysis agree with previous published …
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The Influence of Dopaminergic Medication on Gait and Balance Automaticity and Nonlinear Regularity in Parkinson’s Disease
… Unlike linear measures, nonlinear analyses like Approximate Entropy and Recurrence Quantification Analysis account for the regularity of the entire signal and can help determine the automaticity of the intended movement pattern. Therefore, this study aimed to determine how dopaminergic medication …
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The use of linear and nonlinear methods for evaluating balance on collegiate men’s and women’s ice hockey teams throughout a season
… velocity, and total excursion) and nonlinear (approximate entropy) measures were used to interpret force plate data. Linear and nonlinear measures both showed significant main effects of time. Monthly testing throughout the season demonstrated decreases in mean values for all measures with …
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User profiling in the intelligent office
… conditions. Different techniques including Approximate Entropy (ApEn), consistency measures, linear similarity measures and Dynamic Time Warping (DTW) are employed to quantify a user's behaviour and extract a user profile. The individual user profile is representative of a user's …
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User profiling in the intelligent office
… conditions. Different techniques including Approximate Entropy (ApEn), consistency measures, linear similarity measures and Dynamic Time Warping (DTW) are employed to quantify a user’s behaviour and extract a user profile. The individual user profile is representative of a user’s …
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Complexity Analysis of Physiological Time Series with Applications to Neonatal Sleep Electroencephalogram Signals
… by evaluating two complexity measures i.e. Approximate Entropy(ApEn) and Sample Entropy(SaEn). The suitability of ApEn and SaEn for moderate length data and their relative robustness to noise has made them the good candidate for analyzing EEG time series data. Parameter selection is of …
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ALTERATIONS IN POSTURAL CONTROL FOLLOWING AN ACUTE BOUT OF SOCCER HEADING
… square (RMS) of the center of mass (COM) and approximate entropy (ApEN) of the center of pressure (COP). The results indicated that there were no significant differences between the CG and EG in the sum of self-reported concussion signs and symptoms; however, there were significant alterations …
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The Effects of Subconcussive Impacts on Postural Stability
<p><strong>Context:</strong> The effects of concussions on postural stability, both acutely and chronically, have been well studied and noted. However, whether subconcussive impacts lead to these same impairments is not heavily investigated. <strong>Objectives:</strong> The primary purpose of this …
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Electroencephalographic effects of general anaesthetics : a suite of clinical studies and theoretical models
… the raw 95% spectral edge frequency, and the approximate entropy of the EEG. 2) Auditory recall and response-to-command during recovery from propofol anaesthesia. In this paper we were able to collect data in a very controlled situation, somewhat different from that pertaining to clinical …
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Ανάπτυξη μεθόδων ανάλυσης ηλεκτροεγκεφαλογραφήματος με χρήση μοντέλων συνδεσιμότητας και μεγεθών εντροπίας
Σκοπός της παρούσας διδακτορικής διατριβής είναι η ανάπτυξη και η εφαρμογή εξελιγμένων αλγορίθμων ανάλυσης ηλεκτροεγκεφαλογραφήματος ηρεμίας (rest EEG) και προκλητών δυναμικών (ERP) για την εξαγωγή νευροφυσιολογικών συμπερασμάτων σχετικά με νευρολογικές/ψυχιατρικές ασθένειες. Οι τεχνικές που …
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Structure of force as a predictor of oral motor learning in healthy younger and older adults
… is reported here). Measures of force structure (approximate entropy, ApEn; fuzzy measure entropy, FuzzyMEn; proportion of power, PoP, in 0-1 Hz, 1-2 Hz and 2-3 Hz bands) and error (normalized root mean square error, NRMSE) at baseline (day 1, first trial of each effector x task condition) were …