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Dissertations / Theses on the topic 'Signal EMG du muscle'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Portero, Pierre. "Adaptation du muscle humain à la microgravité simulée : apport de l'analyse spectrale du signal EMG." Compiègne, 1993. http://www.theses.fr/1993COMP566S.

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Les modifications des paramètres spectraux du signal électromyographique de surface (EMGS) des muscles Triceps Surae (T. S. ) et Tibialis Anterior (T. A. ), au cours d'une épreuve de fatigue isométrique, sont étudiées en relation avec une situation de microgravité simulée chez l'homme, c'est-à-dire lors d'une période de Bed Rest (B. R. ). La revue de la littérature a permis de montrer que : d'une part, lors d'une période de microgravité réelle ou simulée, les muscles à fonction antigravitaire (T. S) sont plus affectés que les muscles à fonction phasique (T. A. ) ; d'autre part, les paramètres

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2

Liu, Ming Ming. "Dynamic muscle force prediction from EMG signals using artificial neural networks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq20875.pdf.

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3

Moss, Christa Wheeler. "INVESTIGATION OF BELOW INJURY MUSCLE SIGNALS AS A COMMAND SOURCE FOR A MOTOR NEUROPROSTHESIS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1315924472.

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4

Joubert, Michelle. "A finite element model for the investigation of surface EMG signals during dynami contraction." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-09042008-105943/.

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5

Ayachi, Fouaz Sofiane. "Étude du recrutement des unités motrices par analyse du signal EMG de surface." Compiègne, 2011. http://www.theses.fr/2011COMP1998.

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Le système nerveux central contrôle des mouvements par l’activation des unités de motrices (UM), les plus petites structures fonctionnelles du muscle. Les UM produisent une activité électrique qui peut être détectée par la technique de l’électromyographie de surface (EMGs). Le caractère stochastique du signal EMGs est dû principalement à la superposition des trains de potentiels d’action d’UM (TPAUM) (recrutement spatial), les TPAUM sont caractérisés par leurs instants de décharge (recrutement temporel), ainsi que par la forme des potentiels d’action (PA), qui dépend de certains facteurs métho

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6

KHALIL, ULLAH XXX. "Extraction of Muscle Anatomical and Physiological Information from Multi-Channel Surface EMG Signals: Applications in Obstetrics." Doctoral thesis, Politecnico di Torino, 2016. http://hdl.handle.net/11583/2642318.

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Motor Unit (MU) innervation zones (IZs) localization is an important step in several clinical and non-clinical applications including 1) Acquisition of sEMG signal for accurate estimation of its amplitude and other parameters by avoiding placing the electrodes on IZs, 2) Accurate estimation of the EMG-Force relationship, 3) Effective injection of Botulinum Toxin in Post-stroke Spasticity near the IZs, and 4) Guiding the obstetricians to perform episiotomy during child delivery by avoiding cutting near the IZs of External Anal Sphincter (EAS) muscle. The minimal invasive way to identify the loc

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7

Rahman, Md Arifur. "A comparative study to explore the advantages of passive exoskeletons by monitoring the muscle activity of workers." Thesis, Högskolan i Gävle, Avdelningen för elektroteknik, matematik och naturvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-35150.

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Manufacturing and construction workers undertake physically strenuous activities increasing the risk of health problems, disability, and sick leave, leading to lower job attractiveness and job candidate scarcity. In the EU, up to 44 million workers are affected by workplace-related musculoskeletal disorders (MSDs), representing a total annual cost of more than €240 billion. Exoskeleton use could alleviate muscle peak loads and reduce the risks of injury of workers. This work is related to the INTERREG's project "EXSCALLERATE" which aimed to accelerate the adoption of exoskeletons among SMEs. T

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8

Rojas, Martínez Mónica. "Analysis of forearm muscles activity by means of new protocols of multichannel EMG signal recording and processing." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/124507.

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Los movimientos voluntarios del cuerpo son controlados por el sistema nervioso central y periférico a través de la contracción de los músculos esqueléticos. La contracción se inicia al liberarse un neurotransmisor sobre la unión neuromuscular, iniciando la propagación de un biopotencial sobre la membrana de las fibras musculares que se desplaza hacia los tendones: el Potencial de Acción de la Unidad Motora (MUAP). La señal electromiográfica de superficie registra la activación continua de dichos potenciales sobre la superficie de la piel y constituye una valiosa herramienta para la investigaci

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9

Cao, Hua. "Modélisation et évaluation expérimentale de la relation entre le signal EMG de surface et la force musculaire." Compiègne, 2010. http://www.theses.fr/2010COMP1856.

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L’estimation de la force générée par un muscle est importante dans les études biomécaniques et pour les applications cliniques. Puisque cette force ne peut pas être mesurée directement, le signal électromyographique de surface (SEMG), reflétant le niveau d’activation musculaire, est utilisé pour quantifier la force développée. Cependant, tous les facteurs, contrôlant une contraction isométrique, n’influencent pas la force et le SEMG simultanément. Le but de ce travail de thèse est donc de développer un modèle de simulation conjointe du SEMG et de la force, afin d’étudier la relation EMG-force.

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10

Grönlund, Christer. "Spatio-temporal processing of surface electromyographic signals : information on neuromuscular function and control." Doctoral thesis, Umeå universitet, Institutionen för strålningsvetenskaper, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-958.

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During muscle contraction, electrical signals are generated by the muscle cells. The analysis of those signals is called electromyography (EMG). The EMG signal is mainly determined by physiological factors including so called central factors (central nervous system origin) and peripheral factors (muscle tissue origin). In addition, during the acquisition of EMG signals, technical factors are introduced (measurement equipment origin). The aim of this dissertation was to develop and evaluate methods to estimate physiological properties of the muscles using multichannel surface EMG (MCsEMG) signa

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11

Potes, Cristhian Mauricio. "Assessment of human muscle fatigue from surface EMG signals recorded during isometric voluntary contractions by using a cosine modulated filter bank." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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12

Emrani, Mahdieh Sadat. "Relationships Between Motor Unit Anatomical Characteristics and Motor Unit Potential Statistics in Healthy Muscles." Thesis, University of Waterloo, 2005. http://hdl.handle.net/10012/897.

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The main goal of this thesis was to discover the relationships between MU characteristics and MUP features. To reach this goal, several features explaining the anatomical structure of the muscle were introduced. Additionally, features representing specific properties of the EMG signal detected from that muscle, were defined. Since information regarding the underlying anatomy was not available from real data, a physiologically based muscle model was used to extract the required features. This muscle model stands out from others, by providing similar acquisition schemes as the o

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13

Sahki, Nassim. "Méthodologie data-driven de détection séquentielle de ruptures pour des signaux physiologiques." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0185.

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Cette thèse traite de la problématique de la détection de rupture dans le cadre séquentiel où le signal est supposé être observé en temps réel et le phénomène passe de son état de départ "normal" à un état post-changement "anormal". Le défi de la détection séquentielle est de minimiser le délai de détection, soumis à une limite tolérable de fausse alarme. L'idée est de tester séquentiellement l'existence d'une rupture par l'écriture récursive de la statistique de détection en fonction du score, qui remplace le Log-Likelihood Ratio lorsque la distribution des données est inconnue. La procédure

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14

Kamei, Ken, and ken kamei@student rmit edu au. "The reliability and validity of surface electromyography to study the functional status of the lumbar paraspinal muscles." RMIT University. Health Science, 2010. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20100210.145414.

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The aim of this thesis is to determine whether surface electromyography (EMG) can be used as a diagnostic tool in chiropractic practice to identify the functional status of the lumbar paraspinal muscles. There were two main studies to achieve this aim. The reliability and validity of the surface EMG signal to measure the activity of paraspinal muscles during maintenance of simple static postures was evaluated. During maintenance of static postures, the raw surface EMG signal was often contaminated by an electrocardiographic (ECG) signal. Although the ECG artefact was successfully removed

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15

North, Graham M. "Signal characteristics of surface EMG." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55624.

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16

Goncalves, Carlos Alberto. "Techniques d'évaluation de la vitesse de conduction des potentiels d'action musculaires : application à l'interprétation des remaniements spectraux de l'électromyogramme." Compiègne, 1985. http://www.theses.fr/1985COMPI195.

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17

Plassman, Brenda L. 1957. "INSPIRATORY MUSCLE RESPONSES TO OCCLUSION (EMG)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291244.

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18

Bida, Oljeta. "Influence of electromyogram (EMG) amplitude processing in EMG-torque estimation." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd--01295-140510/.

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Thesis (M.S.)--Worcester Polytechnic Institute.<br>Keywords: system identification; EMG; optimal sampling rate; linear torque model; EMG-torque model; EMG amplitude; torque. Includes bibliographical references (p. 77-86).

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19

Szöllösi, Tomáš. "Měření EMG a posouzení vlivu zátěže." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-374762.

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The task of this thesis was focused on influence of physical load on electrical activity of muscle. There are basic principals and terms from the problematic of measuring electric activity of muscle. Author suggested measuring protocol, got data from group of people, made an application and used this application to analyse measured signals. At the end of this work it was suggested statistical processing and evaluation of results.

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20

Young, Richard N. (Richard Norman). "The effect of muscle contractility on surface EMG /." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60423.

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This study was designed as an investigation of the role of changes in muscle force and changes in muscle length on the EMG for the Tibialis Anterior (TA).<br>Using surface electrodes we examined the EMG for 4 contraction levels at 5 ankle positions over 60$ sp circ$ of ankle rotation. The change in median frequency with muscle length identified a significant shift in the power spectrum to lower frequencies with increasing muscle length.<br>To further investigate our results we performed three other experiments: First, using X-rays to identify the relative change in distance between two intramu

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21

Cutts, Alison. "Surface EMG as an indicator of muscle force." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328893.

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22

E, N. Shaban, and V. Abousetta S. "Online EMG signal analysis for Parkinson’s tremor determination." Thesis, Boston, USA, 2020. http://openarchive.nure.ua/handle/document/11838.

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In this paper, we introduced a general development of software for quantifying the severity of the Parkinson's tremor. The extracted features from the surface EMG of the wrist and hand muscles were the input of the designed model of the application. Using the application that can record reliably the EMG signals and quantify the levels of tremor may contribute to the early diagnosis of the disorder online.

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Shaban, N. E., and V. S. Abousetta. "Online EMG signal analysis for Parkinson’s tremor determination." Thesis, Boston, USA, 2020. http://openarchive.nure.ua/handle/document/13654.

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In this paper, we introduced a general development of software for quantifying the severity of the Parkinson's tremor. The extracted features from the surface EMG of the wrist and hand muscles were the input of the designed model of the application. Using the application that can record reliably the EMG signals and quantify the levels of tremor may contribute to the early diagnosis of the disorder online.

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24

Keating, Jennifer. "Relating forearm muscle electrical activity to finger forces." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-theses/580.

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The electromyogram (EMG) signal is desired to be used as a control signal for applications such as multifunction prostheses, wheelchair navigation, gait generation, grasping control, virtual keyboards, and gesture-based interfaces [25]. Several research studies have attempted to relate the electromyogram (EMG) activity of the forearm muscles to the mechanical activity of the wrist, hand and/or fingers [41], [42], [43]. A primary interest is for EMG control of powered upper-limb prostheses and rehabilitation orthotics. Existing commercial EMG-controlled devices are limited to rudimentary contr

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25

Liu, Lukai. "A Study of Myoelectric Signal Processing." Digital WPI, 2016. https://digitalcommons.wpi.edu/etd-dissertations/34.

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This dissertation of various aspects of electromyogram (EMG: muscle electrical activity) signal processing is comprised of two projects in which I was the lead investigator and two team projects in which I participated. The first investigator-led project was a study of reconstructing continuous EMG discharge rates from neural impulses. Related methods for calculating neural firing rates in other contexts were adapted and applied to the intramuscular motor unit action potential train firing rate. Statistical results based on simulation and clinical data suggest that performances of spline-based

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26

Konté, Cheick-Suhaibou. "Modélisation de l'atténuation du signal EMG diaphragmatique de surface." Grenoble, 2010. http://www.theses.fr/2010GRENS009.

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Le recueil du signal EMG diaphragmatique par voie de surface est une mesure délicate. L'atténuation induite par les différents tissus se situant sur le trajet diaphragme-électrode et la faiblesse de l'amplitude des potentiels générés sont à l'origine d'un rapport signal sur bruit qui rend l'analyse de ce signal particulièrement difficile. Dans ce travail de thèse, nous proposons d'évaluer cette atténuation à deux niveaux d'échelles : Une première échelle appelée " grand volume " consiste à considérer la cage thoracique comme homogène et constituée de tissu pulmonaire et d'évaluer l'atténuation

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27

Magbonde, Abilé. "Séparation de signaux électromyographiques de surface à haute densité pour la réduction de la diaphonie." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALT008.

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L’utilisation du signal électrique musculaire de surface (EMG) dans une perspective biomécanique, thérapeutique ou pour la commande nécessite une forte sélectivité spatiale des signaux. Pour des muscles contigus, cette contrainte est rarement observée rendant l’utilisation du signal EMG difficile. La diaphonie, ou contamination croisée des signaux, inhérentes aux enregistrements doit alors être supprimée.Cette thèse a pour but de proposer des méthodes pour séparer la diaphonie lorsque les muscles extenseurs de l'index et du petit doigt sont en contraction simultanée. Notre travail consiste alo

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Rababy, Nada. "Estimation of EMG conduction velocity using system identification." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63819.

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29

Cheng, Lui. "Improvement of signal-to-noise ratio in uterine EMG recordings." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/1548.

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The objective of this study is to remove or, at least, reduce the noise in uterine EMG recordings, which at their present noise level render the data unusable. Predicting when true labor will start and recognizing when labor actually starts are important for both normal and complex pregnancies. For normal pregnancy, the prognosis of labor is important for reducing unnecessary hospital costs. About 10% of the four million babies born each year in the United States are born prematurely. At $1,500 a day for neonatal intensive care, this comprises national health care expenses of well over $5 bil

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30

Tortopidis, Dimitrios Steliou. "Bite force and EMG studies on the jaw-closing muscles." Thesis, University of Glasgow, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361012.

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31

Zbořilová, Nicol. "Mobilní EMG modul pro využití v terapii." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241999.

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This thesis explains structure of skeletal muscles, generation of action potencial and principle of muscle contraction. Further it shows types of electromyographic signal recording and its usage in therapy. Technical aspects of EMG signal and components required for electromyograph assemblage are next topic of this thesis. Another part presents design of simple EMG module for therapeutical application with bluetooth 4.0 interface.

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32

Kaya, Ryan D. "Muscle Strength, Motor Units, and Aging." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1365769270.

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33

Sachs, Christina Michelle. "EMG analysis of type IIb muscle fibers correlated with blood lactate accumulation /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418061.

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34

Platt, Ronald S. "Signal properties of respiratory muscle electromyograms." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0019/NQ47909.pdf.

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35

Raghavendra, Jammalamadaka. "Optomyography: Detection of muscle surface displacement using reflective photo resistor." Thesis, KTH, Skolan för teknik och hälsa (STH), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159204.

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A human body can carry out many physiological complex processes which can be mechanical, electrical or bio-chemical. Each mechanical activity generates a signal that describes the characteristics of the particular action in the form of pressure or temperature. Any irregularity in the process changes the usual functioning thus affecting the performance of the system. Several techniques were introduced to evaluate these muscular signals in order to get a deeper understanding of the medical abnormalities. Displacement sensors, laser optics, electrodes, accelerometers and microphones are some of t

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36

Rasheed, Sarbast. "A Multiclassifier Approach to Motor Unit Potential Classification for EMG Signal Decomposition." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/934.

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EMG signal decomposition is the process of resolving a composite EMG signal into its constituent motor unit potential trains (classes) and it can be configured as a classification problem. An EMG signal detected by the tip of an inserted needle electrode is the superposition of the individual electrical contributions of the different motor units that are active, during a muscle contraction, and background interference. <BR>This thesis addresses the process of EMG signal decomposition by developing an interactive classification system, which uses multiple classifier fusion techniqu

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Loudon, Gareth. "Advances in knowledge based signal processing : a case study in EMG decomposition." Thesis, University of Leicester, 1991. http://hdl.handle.net/2381/34799.

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This thesis relates to the use of knowledge based signal processing techniques in the decomposition of EMG signals. The aim of the research is to fully decompose EMG signals recorded at fairly high force levels (up to twenty percent maximum voluntary contraction) automatically into their constituent motor unit potentials to provide a fast and accurate analysis routine for the clinician. This requires the classification of non-overlapping motor unit action potentials (MUAPs) and superimposed waveforms formed from overlapping MUAPs in the signal. Firstly, digital filtering algorithms are used to

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38

Sahlén, Adam. "Muscle activity in m.pectoralis major during bench press variations in healthy young males." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-29361.

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Background. The bench press is a commonly used resistance training exercise for targeting the chest musculature. During hypertrophy training, different variations of bench press are often used to isolate different segments (pars clavicularis, pars sternocostalis and pars abdominals) of the chest muscle m.pectoralis major. Commonly used variations of the bench press are decline bench press (less than 0° from horizontal) and incline bench press (more than 0° from horizontal). Some research has been done into these variations of bench angle and their effect on muscle activation; however other co

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Rajotte, Kiriaki J. "Electromyogram (EMG) Signal Analysis: Extraction of a Novel EMG Feature and Optimal Root Difference of Squares (RDS) Processing in Additive Noise." Digital WPI, 2019. https://digitalcommons.wpi.edu/etd-theses/1339.

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Electromyogram signals generated by human muscles can be measured on the surface of the skin and then processed for use in applications such as prostheses control, kinesiology and diagnostic medicine. Most EMG applications extract an estimate of the EMG amplitude, defined as the time-varying standard deviation of EMG, EMGσ. To improve the quality of EMGσ, additional signal processing techniques, such as whitening, noise reduction and additional signal features can be incorporated into the EMGσ processing. Implementation of these additional processing techniques improve the quality of the proce

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Hewitt, G. "A study of developmental and intersubject differences in the use of EMG biofeedback to improve voluntary control of precise, directional contractions... frontalis muscles : Implications for clinical use." Thesis, Roehampton University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382549.

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41

Hoeven, Johannes Harmen van der. "Conduction velocity in human muscle an EMG study in fatigue and neuromuscular disorders /." [S.l. : [Groningen] : s.n.] ; [University Library Groningen] [Host], 1995. http://irs.ub.rug.nl/ppn/142995223.

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42

Bene, Cheryl Renee. "Visually displayed-EMG biofeedback : training muscle relaxation in hearing impaired children :a thesis." Scholarly Commons, 1988. https://scholarlycommons.pacific.edu/uop_etds/505.

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The purpose of the present study was to test the use of visually displayed EMG biofeedback as a means for training hearing impaired adolescents to reduce anterior temporalis or frontalis muscle tension . Five male and four female hearing impaired students between the ages of 13 and 15 were chosen from the California School for the Deaf, Fremont, CA to serve as participants. Each participant was randomly assigned to either an experimental or control condition. Participants in the experimental groups were given five 15 minute EMG biofeedback training sessions. An additional group of 4 adolescent

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Szabó, Balázs. "High density EMG based estimation of lower limb muscle characteristics using feature extraction." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289859.

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Electromyography (EMG) is a common tool in electrical muscle activity measurement and can be used in multiple areas of clinical and biomedical applications, mainly in identifying neuromuscular diseases, analyzing movement or in human machine interfaces. Traditionally a pair of electrodes were used to measure the signals, but in recent years the use of high density surface EMG (HD-sEMG) gained more popularity as it can sample myoelectric activities from multiple electrodes in an array on a single muscle and provide more information. In this thesis a measurement setup and protocol is proposed th

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Takahashi, Luciana Sanae Ota. "Análise da relação entre eletromiografia e força do músculo quadríceps em exercícios resistidos." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/82/82131/tde-30072007-172711/.

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A relação entre eletromiografia e força é objeto de numerosos estudos, porém tal relação ainda não está totalmente elucidada e necessita de uma melhor fundamentação. Uma possível razão para as divergências entre esses estudos reside na dificuldade em determinar a força de um músculo individualmente de forma direta. Dentro deste contexto, procurou-se utilizar a análise do sinal eletromiográfico, associada a um modelo biomecânico do segmento articular para a avaliação das forças internas do músculo. O objetivo do presente trabalho é avaliar o comportamento eletromiográfico do músculo quadríceps

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Anjos, Fabio Vieira Dos. "High-density surface EMG to investigate muscle activity during standing: implications for the training of postural control with EMG biofeedback in the elderly." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2690493.

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By recording surface EMG using standard bipolar EMG, previous studies have demonstrated that elderlies tend to activate their postural muscles during standing with a higher degree of activity and for a prolonged duration compared with young adults. The EMG biofeedback technique has been widely used to reduce the excessive level of muscle activity in different fields, e.g. the prevention and reduction of low back pain. In this view, EMG biofeedback could be a potential tool to assist aged subjects in reducing the excessive muscle activity during standing balance. However, whether the greater, p

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Koenig, Alexander C. "Simulation of agonist and antagonist muscle activation patterns in bidirectional postural perturbation in cats." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11576.

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We studied the effects of varying perturbation magnitude and direction on the postural control process of the central nervous system (CNS) caused by perturbation, before and after sensory loss. The electromyogram (EMG) response to a postural perturbation can be composed by a weighted sum of the center of mass (CoM) kinematics. We extended an existing CoM feedback model which predicted EMG of one muscle for unidirectional perturbations; we used recorded data of bidirectional perturbations, which caused muscle activity in anterior as well as posterior muscles. Modeling the CNS as two delayed fee

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Pettersson, Victor. "Repetitive climbing effect on muscle activation." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42144.

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Background. Climbing is growing as a recreational sport worldwide. Climbing is a physically demanding sport requiring well developed strength and endurance. Plenty of studies have been made in the area of climbing in order to understand how the body adapts, which muscles are being used and how to prevent injury. A lot of these studies uses electromyography (EMG), a tool that measures electrical currents in muscles to detect muscle activity, as measurement method in order to do findings within the area. Aim. The aim was to study differences in muscle activation in arm and leg muscles in climber

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48

Lockhart, Daniel Bruce. "Prediction of Muscle Activation Patterns During Postural Control Using a Feedback Control Model." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7280.

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Neural mechanisms determining temporal muscle activity patterns during postural control are not well understood. We hypothesize that a feedback control mechanism can predict both temporal extensor muscle EMG and CoM kinematics (acceleration, velocity, and displacement) during postural perturbations before and following peripheral neuropathy to group I afferents induced by pyridoxine intoxication. We introduce a feedback model for analyzing temporal EMG patterns that decomposes recorded electromyogram (EMG) signals into the sum of three center of mass (CoM) feedback components. EMG and CoM kine

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Peña, Guido Gómez. "Controle de impedância adaptativo dirigido por EMG para reabilitacão robótica." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-19032019-144320/.

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Esta tese trata da estimativa de torque e rigidez do paciente dirigida por EMG e sua utilização para adaptar a rigidez do robô durante a reabilitação assistida por robôs. Os sinais eletromiográficos (EMG), obtidos de músculos que atuam durante os movimentos de flexão e extensão de um usuário utilizando uma órtese de joelho ativa, são processados para obter as ativações dos músculos. Inicialmente, um modelo musculoesquelético simplificado e otimizado é usado para calcular as estimativas de torque e rigidez da junta do paciente. A otimização do modelo é realizada comparando o torque estimado com

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Wang, Shuqiang. "A framework for medical decision support systems : a case study of EMG signal interpretation." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/34721.

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This thesis contains a framework of medical decision support systems (DSS) and a case study of signal interpretation in electromyography (EMG). Methodologies required for architecture of such knowledge-based systems (KBS) are explored at both epistemological level and computational level in the thesis. Firstly, a research scheme is proposed under which system development is explicitly defined as a process of two stages, conceptual design and computational design. The conceptual design is mainly concerned with the medical domain. Its task is to abstract the problem-solving logic of that domain

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