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Title:
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Interpretation of the approximate entropy using fixed tolerance values as a measure of amplitude variations in biomedical signals
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Author:
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Sarlabous Uranga, Leonardo; Torres Cebrián, Abel; Fiz Fernández, José Antonio; Gea Guiral, Joaquim; Martínez Llorens, Juana María; Morera Prat, Josep Maria; Jané Campos, Raimon
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial; Institut de Bioenginyeria de Catalunya; Universitat Politècnica de Catalunya. SISBIO - Senyals i Sistemes Biomèdics |
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Abstract:
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A new method for the quantification of amplitude
variations in biomedical signals through moving approximate
entropy is presented. Unlike the usual method to calculate the
approximate entropy (ApEn), in which the tolerance value (r)
varies based on the standard deviation of each moving window,
in this work ApEn has been computed using a fixed value of r.
We called this method, moving approximate entropy with fixed
tolerance values: ApEnf. The obtained results indicate that
ApEnf allows determining amplitude variations in biomedical
data series. These amplitude variations are better determined
when intermediate values of tolerance are used. The study
performed in diaphragmatic mechanomyographic signals
shows that the ApEnf curve is more correlated with the
respiratory effort than the standard RMS amplitude
parameter. Furthermore, it has been observed that the ApEnf
parameter is less affected by the existence of impulsive,
sinusoidal, constant and Gaussian noises in comparison with
the RMS amplitude parameter. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
-Àrees temàtiques de la UPC::Ciències de la salut::Medicina
-Entropy--Measurement
-Bioengineering
-Lungs--Diseases, Obstructive--Animal models
-Bioenginyeria -- Tractament del senyal
-Entropia
-Respiració -- Mesurament
-Insuficiència respiratòria
-Enginyeria biomèdica |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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Published by:
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IEEE Press. Institute of Electrical and Electronics Engineers
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