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Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment

Information theory provides a spectrum of nonlinear methods capable of grasping an internal structure of a signal together with an insight into its complex nature. In this work, we discuss the usefulness of the selected entropy techniques for a description of the information carried by the surface e...

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Detalles Bibliográficos
Autores principales: Trybek, Paulina, Nowakowski, Michal, Salowka, Jerzy, Spiechowicz, Jakub, Machura, Lukasz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7512423/
https://www.ncbi.nlm.nih.gov/pubmed/33266587
http://dx.doi.org/10.3390/e20110863
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author Trybek, Paulina
Nowakowski, Michal
Salowka, Jerzy
Spiechowicz, Jakub
Machura, Lukasz
author_facet Trybek, Paulina
Nowakowski, Michal
Salowka, Jerzy
Spiechowicz, Jakub
Machura, Lukasz
author_sort Trybek, Paulina
collection PubMed
description Information theory provides a spectrum of nonlinear methods capable of grasping an internal structure of a signal together with an insight into its complex nature. In this work, we discuss the usefulness of the selected entropy techniques for a description of the information carried by the surface electromyography signals during colorectal cancer treatment. The electrical activity of the external anal sphincter can serve as a potential source of knowledge of the actual state of the patient who underwent a common surgery for rectal cancer in the form of anterior or lower anterior resection. The calculation of Sample entropy parameters has been extended to multiple time scales in terms of the Multiscale Sample Entropy. The specific values of the entropy measures and their dependence on the time scales were analyzed with regard to the time elapsed since the operation, the type of surgical treatment and also the different depths of the rectum canal. The Mann–Whitney U test and Anova Friedman statistics indicate the statistically significant differences among all of stages of treatment and for all consecutive depths of rectum area for the estimated Sample Entropy. The further analysis at the multiple time scales signify the substantial differences among compared stages of treatment in the group of patients who underwent the lower anterior resection.
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spelling pubmed-75124232020-11-09 Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment Trybek, Paulina Nowakowski, Michal Salowka, Jerzy Spiechowicz, Jakub Machura, Lukasz Entropy (Basel) Article Information theory provides a spectrum of nonlinear methods capable of grasping an internal structure of a signal together with an insight into its complex nature. In this work, we discuss the usefulness of the selected entropy techniques for a description of the information carried by the surface electromyography signals during colorectal cancer treatment. The electrical activity of the external anal sphincter can serve as a potential source of knowledge of the actual state of the patient who underwent a common surgery for rectal cancer in the form of anterior or lower anterior resection. The calculation of Sample entropy parameters has been extended to multiple time scales in terms of the Multiscale Sample Entropy. The specific values of the entropy measures and their dependence on the time scales were analyzed with regard to the time elapsed since the operation, the type of surgical treatment and also the different depths of the rectum canal. The Mann–Whitney U test and Anova Friedman statistics indicate the statistically significant differences among all of stages of treatment and for all consecutive depths of rectum area for the estimated Sample Entropy. The further analysis at the multiple time scales signify the substantial differences among compared stages of treatment in the group of patients who underwent the lower anterior resection. MDPI 2018-11-09 /pmc/articles/PMC7512423/ /pubmed/33266587 http://dx.doi.org/10.3390/e20110863 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Trybek, Paulina
Nowakowski, Michal
Salowka, Jerzy
Spiechowicz, Jakub
Machura, Lukasz
Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment
title Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment
title_full Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment
title_fullStr Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment
title_full_unstemmed Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment
title_short Sample Entropy of sEMG Signals at Different Stages of Rectal Cancer Treatment
title_sort sample entropy of semg signals at different stages of rectal cancer treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7512423/
https://www.ncbi.nlm.nih.gov/pubmed/33266587
http://dx.doi.org/10.3390/e20110863
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