Dissertations / Theses: 'Electromyography'

1

Small, Gary James. "Simulation and analysis in electromyography." Thesis, University of Leicester, 1998. http://hdl.handle.net/2381/30168.

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This thesis deals with the construction of a medical decision support system, and more specifically with the knowledge sources within the system that facilitate its operation. Simulations of some results from a proportion of these knowledge sources are created, the results correspond to the physical and electrophysiological tests carried out on a patient during neuromuscular diagnosis, and various methods of processing the acquired data for interpretation. Chaos as a method of modelling myoelectric activity is assessed for the purpose of creating an EMG simulation knowledge source and for differentiating between disorder types. The construction of phase portraits, correlation dimension analysis and calculation of Lyapunov exponents are all used to attempt to establish the presence of chaotic behaviour in the myoelectric signal. However, it is proven that the dynamics of the EMG are not chaotic in nature, thus a more suitable model for EMG simulation is chosen. The second knowledge source looked at in detail is that of EMG decomposition. Two methods of clustering MUAPs into their classes are assessed. Firstly the use of a neural network to cluster action potentials represented by correlated features and then non correlated factors. The method proves most effective when non-correlated factors are used. The second method looked at is that of multiple database principal component analysis. This method proves capable of clustering MUAP classes in the presence of noise and MUAP variation. The method is tested on real data and, within the limits of the study, the results are confirmed. A study of time requirements is made for resolution of overlapping action potentials. Two methods are considered - a fast and a more thorough one. It is established that it would be appropriate for these methods to be used in complement with one another, in a method for automatic decomposition that includes both clustering methods discussed along with various other appropriate techniques such as firing time analysis.

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2

Chiang, Joyce Hsien-yin. "Multivariate analysis of surface electromyography signals." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31587.

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As the primary method of measuring muscle activation, the surface electromyography (sEMG) is of great importance in the study of motor deficits seen in patients with brain injuries and neuromuscular disorders. While clinicians have long intuitively understood that deficits in motor control are related to inappropriate recruitment of muscle synergies across several muscles, sEMG recordings are still typically examined in a univariate fashion. However, most traditional univariate techniques are unable to quantitatively capture the complex interactions between muscles during natural movements. To address this issue, multivariate signal processing techniques are employed in this thesis to study muscle co-activation patterns in patient populations. A method for classification of multivariate sEMG recordings between stroke and healthy subjects is proposed. The proposed classification scheme utilizes the eigenspectra of time-varying covariance patterns between sEMG channels as feature vectors and the support vector machines (SVM) as classifiers. Despite the minimal differences in the RMS profiles of individual muscles, the proposed scheme is able to effectively differentiate between healthy and stroke subjects. Moreover, the classification rate is shown to be monotonically related to the severity of motor impairment. This simple, biologically-inspired approach is able to quantitatively capture the subtle differences in muscle recruitment patterns between two populations and appears to be a promising means to measure motor performance. The other approach to modeling multivariate sEMG utilizes the HMM-mAR framework, which combines hidden Markov models (HMMs] and multivariate autoregressive (mAR) models. Different forms of sEMG data are analyzed, including raw sEMG, amplitude sEMG and carrier sEMG. The classification between healthy and stroke subjects is performed using structural features derived from estimated model parameters. Both the raw and carrier data produce excellent classification performance. The proposed method represents a fundamental departure from most existing classification methods where only amplitude sEMG is analyzed or mAR coefficients are directly used as feature vectors. In contrast, our analysis shows that the structural features of the carrier sEMG can enhance the classification performance and provide additional insights into motor control.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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3

Bell, Aleeta E. "A Wireless Surface Electromyography (WSEMG) System." VCU Scholars Compass, 2006. http://hdl.handle.net/10156/2138.

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Coxon, Andrew. "Computer aided analysis of paraspinal electromyography." Thesis, Teesside University, 2013. http://hdl.handle.net/10149/301616.

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Back pain is responsible for British employees taking 5 million sick days per year. Low back pain (LBP) has a controversial aetiology, with 95% of cases caused by mechanical, non-pathological causes. Current medical treatment for mechanical LBP is an exercise regime designed to restore lumbar stability. Unfortunately this is often a painful process, and therefore difficult to complete. Electromyography (EMG) variables have been shown to be able to discriminate between subjects with and without mechanical LBP. If these variables could be shown to have discriminatory abilities before the actual onset of LBP they could be used to predict future episodes of LBP in currently otherwise asymptomatic individuals and allow the rehabilitation process to begin before the onset of symptoms. However a number of problems persist with EMG measurement. The test must be administered under closely controlled conditions in order to record clean signals, and interpretation of this data requires special tools and training. This thesis aims to make contributions in three main areas; Automated Analysis: Manual analysis of a large store of EMG raw data files is a time consuming process. If outcome variables that require manual interpretation are included this effect is magnified, with necessary questions being raised as to the accuracy and consistency levels that can be maintained. A successfully implemented automated system would reduce analysis time and improve confidence in the outcome variables recorded. Investigations will also be carried out into the addition of error detection and correction algorithms that could be performed during the analysis procedure. ECG Contamination Removal: Previous studies have identified ECG as a potential source of contamination of lumbar EMG signals. Compensation for this effect is non-trivial as the ECG frequencies overlap an area of interest in the EMG spectrum, and the ECG signal characteristics would change over a fatiguing EMG test. The Independent Component Analysis method will be used to attempt to extract and remove the ECG component of a recorded signal whilst preserving the underlying EMG data. If this is successful an analysis of the effect that removing ECG contamination has on EMG outcome variables will be presented. Colour Map Diagnostic Method: Colour maps are an excellent method of presenting a large amount of signal data to a researcher, and have been used to discriminate between LBP and non-LBP subjects. The usefulness of this diagnostic display too has been somewhat limited however by the difficulty in producing such maps. Investigations will be carried out into methods that will be able to quickly and accurately produce these colour maps to the same specification as earlier studies. Colour maps of subjects that did not report LBP at the time of testing, but who then did report LBP at their next presentation, will be examined to assess whether or not EMG colour maps can be used as a predictor for low back pain.

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Peterson, Andrew Jay II. "Development of a Modular Electromyography System." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78693.

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The design of current electromyography (EMG) systems focuses on specific applications. One design focuses on the use of bipolar electrodes to monitor a single muscle group. Several of these electrodes can then be used to monitor different muscles on the body simultaneously. Another design places many electrodes in an array on a limb or over a single muscle. One cannot be used for the other. Additionally the design of an EMG system must account for several sources of noise that can be orders of magnitude larger than the EMG signal itself. The goal of this work was to design an active EMG electrode that could be used as bipolar electrodes or in an electrode array. Two electrodes were designed and tested. One design only worked in bipolar and the other did not possess the desired noise immunity. Explanations to the behavior of the electrodes are presented along with possible modifications the the electrodes to achieve the desired performance.
Master of Science

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Fang, Yinfeng. "Interacting with prosthetic hands via electromyography signals." Thesis, University of Portsmouth, 2015. https://researchportal.port.ac.uk/portal/en/theses/interacting-with-prosthetic-hands-via-electromyography-signals(a1a08ee8-6337-416b-a955-0ff9737beb56).html.

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It is a challenge to provide robust electromyographic signals or patterns for prosthetic hand systems. This thesis proposes a comprehensive methodology to address the challenge with respect to surface electromyographic signal acquisition, electrode layouts, electromyographic features and user training strategies. A multi-channel surface electromyography acquisition platform is customised to conduct researches throughout this thesis. First of all, a zig electrode layout is proposed to provide more repeatable electromyographic signals. This electrode layout is instantiated into an electrode sleeve, which is specially presented to fix the electrodes on the forearm and acquire forearm muscular activities. Our experiments prove that zig electrode layout has better electromyographic signal repeatability than conventional parallel electrode layout in different tests. Secondly, this thesis establishes a bridge connecting forearm muscles’ functions and multi-channel electromyographic signals by means of electromyographic map and magnitude-angle feature. The electromyographic map is proposed to explore how channels of electromyographic signals correspond to individual forearm muscles. In order to understand hand motion physiological principles, magnitude-angle feature is presented to identify the most active muscles during hand motions. Thirdly, to enhance patients’ ability in generating intuitive prosthetic control commands, a training strategy based on visual trajectory feedback is proposed. In the training procedure, users are able to adjust themselves according to classifier feedback. This training procedure can significantly improve patients’s ability in generating repeatable electromyographic pattern, no matter the feedback information is able or disable.

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Aula, Mercy, and Ken Silver. "Evaluation of Tomato Farmworker Ergonomics using Electromyography." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/150.

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BACKGROUND AND SIGNIFICANCE. Various studies have identified physical risk factors for musculoskeletal disorders (MSDs) associated with hand harvesting of crops, due to repetitive motions, lifting or carrying of heavy loads, and working in flexed trunk postures. A paucity of research exists on ergonomic risks to tomato farmworkers. The available studies have estimated risk based on self-reports of injury and semi-quantitative measures. METHODS. A partnership between East Tennessee State University (ETSU) and a migrant health center (Rural Medical Services) has identified some of the occupational health needs of this population. With the aid of surface electromyography (sEMG), an objective-quantitative tool, a more refined understanding of ergonomic health risks for this population will be developed. The purpose of this study is to evaluate the muscle load and fatigue induced on the anterior deltoid and upper trapezius muscles during three tasks: driving stakes into the ground, tying of tomatoes to stakes, and hoisting of a 35-pound bucket full of tomatoes. Space for a mock test plot, where the study will be conducted, is available at the ETSU’s Valleybrook facility. Muscle activity recordings will be obtained from 15 tomato farmworkers. Spectral analysis and the amplitude probability distribution function (APDF) will be used to assess fatigue and muscle load respectively. A repeated measures ANOVA will be employed in the study. ANTICIPATED RESULTS. Findings of this study should show that localized muscle loading increases muscle fatigue. Neuromuscular demand should vary, depending on the type of task performed. Stake pounding may show a higher neuromuscular demand than the other tasks. AIM 1. Evaluate the magnitude of muscle activity during three simulated tomato-field tasks and measure the intensity of movement during the stake pounding task. AIM 2. Compare estimates of muscle fatigue and muscle load induced on the anterior deltoid and upper trapezius muscles during three simulated tomato-field tasks.

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8

Huynh, Linh. "Clustering Sleep-Wake Transitions in Electromyography Data." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492762116527713.

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9

Kaplanis, Prodromos Andrew. "Surface electromyography in the assessment of neuromuscular disorders." Thesis, University of London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413164.

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McKeone, James P. "Statistical methods for electromyography data and associated problems." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/79631/1/James_McKeone_Thesis.pdf.

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This thesis proposes three novel models which extend the statistical methodology for motor unit number estimation, a clinical neurology technique. Motor unit number estimation is important in the treatment of degenerative muscular diseases and, potentially, spinal injury. Additionally, a recent and untested statistic to enable statistical model choice is found to be a practical alternative for larger datasets. The existing methods for dose finding in dual-agent clinical trials are found to be suitable only for designs of modest dimensions. The model choice case-study is the first of its kind containing interesting results using so-called unit information prior distributions.

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O'Keefe, Kathryn Bernadine. "Joint moment estimation from electromyography of patients with osteoarthritis." Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/okeefe/OKeefeK1207.pdf.

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12

Hamed, Hamad Shejoon. "Module based on wavelet-transform for electromyography signals processing." Thesis, Boston, USA, 2020. http://openarchive.nure.ua/handle/document/11841.

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In developed software optimal EMG resolution component (sub-signal) was selected, and then the reconstruction of the useful information signal was done. Noise and unwanted EMG parts were eliminated throughout this process. Developed module consists of 5 main units for EMG processing based on wavelet-transform. The obtained results allow in the automated mode of developed module execute processing and analysis EMG signals for classification data.

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13

Imrani, Sallak Loubna. "Evaluation of muscle aging using high density surface electromyography." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2647.

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Avec le vieillissement de la population, préserver la fonction musculaire est important pour éviter la perte de mobilité et d'autonomie. De nos jours, la prévention de la maladie musculaire, la sarcopénie, est une préoccupation majeure et des facteurs de risque importants tels que l'âge avancé ainsi que des facteurs modifiables, notamment une faible activité physique et une alimentation déséquilibrée ont été identifiés. Compte tenu de la croissance des populations plus âgées et de la diminution de l'activité physique, qui touche également les jeunes citoyens, la sensibilisation à la qualité musculaire peut être cruciale pour promouvoir un vieillissement en bonne santé dans nos sociétés. Les besoins en évaluations fonctionnelles musculaires ont été exprimés par les chercheurs et les cliniciens. Le groupe de travail européen sur la sarcopénie chez les personnes âgées (EWGSOP) recommande de définir la sarcopénie comme la présence à la fois d'une faible masse musculaire et d'une faible fonction musculaire (force et performance physique). Pour cela, nous avons développé une méthode d’évaluation du vieillissement musculaire, en utilisant une technologie ambulatoire et non invasive, appelée technologie d'électromyographie de surface haute densité (HD-sEMG), à travers un projet de recherche clinique sur cinq catégories d'âge (25 à 74 ans), actifs et sédentaires. Nous avons réalisé une étude comparative avec une analyse complète et multimodale du rectus femoris (RF), muscle impliqué dans les mouvements de la vie quotidienne, pour dévoiler le potentiel prometteur de la technique HD sEMG, par rapport aux techniques cliniques classiques, l’objectif étant de détecter les changements précoces de la qualité de la fonction musculaire impactée par le vieillissement et le niveau d'activité physique. La partie clinique de ce projet de thèse a été financée par une subvention européenne, EIT Health. En analysant principalement la dynamique de contraction musculaire et l'intensité du rectus femoris, nos résultats ont montré que la technique HD-sEMG, était capable de discriminer entre les cinq catégories d'âge de sujets sains physiquement actifs. Plus intéressant encore, les scores HD-sEMG proposés discriminaient entre les participants actifs et sédentaires, de la même catégorie d'âge (45-54 ans), contrairement aux paramètres cliniques et aux autres techniques couramment utilisées (absortiométrie biphotonique par rayons X, DXA et échographie). De plus, ces scores pour les participants sédentaires de cette catégorie d'âge étaient significativement plus proches de ceux des participants actifs des catégories d'âge supérieures (55-64 ans et 65-74 ans). Cela suggère fortement qu'un mode de vie sédentaire semble accélérer le processus de vieillissement musculaire au niveau anatomique et fonctionnel, et ce processus accéléré subtil peut être détecté par la technique HD-sEMG. Ces résultats préliminaires prometteurs pourraient contribuer au développement d’un outil intéressant aux cliniciens pour améliorer à la fois la précision et la sensibilité de l'évaluation musculaire utile pour les programmes de prévention et de réadaptation afin d'éviter ou de retarder la sarcopénie, problème de santé publique actuel alerté par l'Organisation Mondiale de la Santé (OMS) et promouvoir un vieillissement en bonne santé
With the aging of the population, preserving muscle function is important to prevent loss of mobility and autonomy. Nowadays, the prevention of the muscle disease, sarcopenia, is a major concern and important risk factors such as older age as well as modifiable factors including low physical activity and unhealthy diet have been identified. Considering the growth of older populations and the decreased physical activity, which also includes young citizens, muscle quality awareness can be crucial in promoting a healthy aging process in our societies. Muscle functional assessments needs were expressed by researchers and clinicians, The European Working Group on Sarcopenia in Older People (EWGSOP) recommends defining sarcopenia as the presence of both low muscle mass and low muscle function (strength, and physical performance). For this purpose, we have developed a method for muscle aging evaluation, using an ambulatory and non-invasive technology, called high-density surface electromyography (HDsEMG), through a clinical research project on five age categories (25 to 74 yrs.). We performed a comparative study with a complete and multimodal analysis of the rectus femoris, muscle involved in daily life motions, in order to reveal the promising potential of the HD-sEMG technique, compared to conventional clinical techniques, to detect early changes in the quality of muscle function impacted by aging and physical activity level. The clinical part of this thesis project was funded by a European grant, EITH Health. By analyzing both muscle contraction dynamics and intensity of the rectus femoris, our results showed that the HD-sEMG technique, was able to discriminate between the five age categories of healthy physically active subjects. More interestingly, the proposed HD-sEMG scores discriminated between active and sedentary participants, from the same age category(45-54 yrs.), in contrary to clinical parameters and others usual techniques (dual-energy x-ray absorptiometry, DXA and ultrasonography). In addition, these scores for sedentary participants from this age category were significantly closer to those of active participants from higher age categories (55-64 yrs. and 65-74 yrs.). This strongly suggests that sedentary lifestyle seems to accelerate the muscle aging process at both anatomical and functional level, and this subtle accelerated process can be detected by the HD-sEMG technique. These promising preliminary results can contribute to the development of an interesting tool for clinicians to improve both accuracy and sensitivity of functional muscle evaluation useful for prevention and rehabilitation to avoid the effects of unhealthy lifestyle that can potentially lead to sarcopenia. This can support also the actual public health concern alerted by Word Health Organization (WHO) regarding aging and sarcopenia, to promote healthy aging

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14

Wang, Anqi. "Prediction of Human Hand Motions based on Surface Electromyography." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78289.

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Tracking human hand motions has raised more attention due to the recent advancements of virtual reality (Rheingold, 1991) and prosthesis control (Antfolk et al., 2010). Surface electromyography (sEMG) has been the predominant method for sensing electrical activity in biomechanical studies, and has also been applied to motion tracking in recent years. While most studies focus on the classification of human hand motions within a predefined motion set, the prediction of continuous finger joint angles and wrist angles remains a challenging endeavor. In this research, a biomechanical knowledge-driven data fusion strategy is proposed to predict finger joint angles and wrist angles. This strategy combines time series data of sEMG signals and simulated muscle features, which can be extracted from a biomechanical model available in OpenSim (Delp et al., 2007). A support vector regression (SVR) model is used to firstly predict muscle features from sEMG signals and then to predict joint angles from the estimated muscle features. A set of motion data containing 10 types of motions from 12 participants was collected from an institutional review board approved experiment. A hypothesis was tested to validate whether adding the simulated muscle features would significantly improve the prediction performance. The study indicates that the biomechanical knowledge-driven data fusion strategy will improve the prediction of new types of human hand motions. The results indicate that the proposed strategy significantly outperforms the benchmark date-driven model especially when the users were performing unknown types of motions from the model training stage. The proposed model provides a possible approach to integrate the simulation models and data fusion models in human factors and ergonomics.
Master of Science

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15

Williams, J. M. "The use of surface electromyography within equine performance analysis." Thesis, University of the West of England, Bristol, 2015. http://eprints.uwe.ac.uk/25786/.

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Equine athletes participate in a wide range of equestrian disciplines. Performance analysis in sport is the collection and subsequent analysis of data, or key information sets, related to facets of training and / or competition, to accelerate and improve athletic performance. Equine performance analysis research aims to optimise the potential competition success of the horse whilst concurrently promoting health and welfare and increasing career longevity. Despite the benefits associated with performance analysis, its application is limited in equine sport. Surface electromyography (sEMG) is a non-invasive technique which illustrates recruitment patterns of superficial skeletal muscle and can provide quantitative data on the activity within muscle during dynamic motion. sEMG has the potential to contribute to equine performance analysis particularly via assessment of muscle recruitment, activity and adaptation within training regimens and during competition. The critical commentary demonstrates the potential of surface electromyography (sEMG) as an effective performance analysis tool that could be used to assess the physiological response of muscle during field-based exercise in the horse and provides examples of how sEMG data obtained could guide improvements in the efficacy of training regimens for the equine athlete. Critical reflection on four peer-reviewed evidence sources was conducted to establish their contribution to equine performance research and to facilitate debate of future research directions for equine sEMG. The research demonstrates the validity of telemetric sEMG as an emerging technology that could be used to analyse muscle performance in the equine athlete for defined events, for example jumping a fence, and to assess performance over time, for example monitoring muscle activity during interval training. Opportunities also exist to determine the efficacy of muscle-related clinical and therapeutic interventions such as prophylactic dentistry or physiotherapy. The preliminary research presented suggests the use of equine sEMG as a performance analysis tool has most value to assess and compare muscle performance during exercise within individual horses. However further research is required to substantiate this. Future studies integrating larger sample sizes, horses selected from specific equestrian disciplines and breeds, and further exploration of the impact of coat length and sEMG sensor placement on data obtained would be worthwhile to standardise and validate the protocols employed here. Equine performance is a complex area; future work needs to focus on the individual characteristics that contribute to desired performance goals, but should also evaluate performance as a holistic entity. It is essential for progression in the performance field that research undertaken is shared with the equine industry to enable practical implementation. The use of sEMG in the equine athlete has the potential to increase understanding of how muscle responds to exercise and could help create an evidence-base to inform individual and discipline-specific training regimens. Increased efficacy in training should promote success, enhancing performance and extending career longevity for the equine athlete, whilst indirectly benefiting the horse’s health and welfare through improved management practices and injury reduction.

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Yarbrough, Nancy Victoria 1945. "CONTROL OF TOUCHDOWN IN HUMAN LOCOMOTION (ELECTROMYOGRAPHY, WALKING, KINEMATICS)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/291309.

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ROSSI, FABIO. "A Bio-Inspired Processing Unit for Surface Electromyography Applications." Doctoral thesis, Politecnico di Torino, 2022. https://hdl.handle.net/11583/2972787.

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Mak, Nin-fung Joseph. "Dynamic surface electromyography in functional assessment of low back musculature." Click to view the E-thesis via HKUTO, 2004. http://sunzi.lib.hku.hk/hkuto/record/B31972020.

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Mak, Nin-fung Joseph, and 麥年豐. "Dynamic surface electromyography in functional assessment of low back musculature." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31972020.

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Östlund, Nils. "Adaptive signal processing of surface electromyogram signals /." Umeå : Department of Radiation Sciences, Umeå University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-743.

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Tse, Yuk-hang Jessica, and 謝毓衡. "Application of surface electromyography topography in low back pain rehabilitation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/208612.

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The management of low back pain (LBP) has long been a challenge as it is a highly prevalent disease worldwide due to the lack of an apparent etiology and a conclusive therapeutic treatment. Heterogeneous groups of LBP patients with diverse medical backgrounds also complicate the problem. A clinical threshold is demanded to match the patients and treatments appropriately in order to maximize the treatment success rate. Besides, the assessments of disability and pain perception due to LBP made by self-evaluated questionnaires in current clinical setting are highly susceptible to subjective feeling and the memory of patients. LBP and spasm are closely related but little is known for the underlying physiology, especially the musculature of LBP patients with spasm. These problems exacerbate the difficulty in LBP rehabilitation further. Surface electromyography (sEMG) topography is a cutting- edge technology to assess the lumbar muscle in vivo non-invasively by illustrating the distribution of global muscle activity visually. sEMG topography has the potential application as an objective assessment tool for LBP rehabilitation. In present study, sEMG topography was used to address 1) the prognostic value of sEMG topography on LBP rehabilitation, 2) the establishment and validation of a clinical classification threshold for identification of LBP patients who are responsive to exercise therapy and 3) the investigation of sEMG topography in accordance with the physiological outcomes (functional disability, pain perception and spasm). Forty-five healthy subjects and fifty patients with chronic non-specific LBP were enrolled to the study. sEMG test was conducted to every subject under the motions of lumbar flexion and extension in order to gather the myoelectric signals by a 16-channel sEMG. Various sEMG topographic parameters (sEMG parameters) were developed for quantitative analysis of sEMG topography. They were Root-Mean-Square-Difference of Relative Area (RMSD RA), Relative Width (RMSD RW) and Relative Height (RMSD RH) at flexion and extension. Results showed that sEMG parameters were of significant prognostic value for LBP patients towards exercise therapy. A clinical threshold of 0.21 was proposed and validated based on the geometric calculation of RMSD RA and RMSD RW at flexion and extension. The threshold was substantiated to increase the success rate of exercise therapy from 46% to 86% when the value measured by sEMG topography was below 0.21. sEMG parameters were found significantly associated with disability and pain perception in a positive manner. Severer disability and pain perception were represented by larger values of sEMG parameters. sEMG topography demonstrated symmetric patterns for patients with or without spasms on bilateral sides of lumbar muscles. The symmetry in sEMG topography evinced the consistency of the musculature of bilateral lumbar muscles while the lost of symmetry might indicate malfunction of lumbar muscles unilaterally. To conclude, this study corroborated versatile roles of sEMG topography in LBP rehabilitation as a prognosis, clinical threshold, and objective measurement. The findings of this study have paved the way of sEMG topography for future application in clinical setting. A study of larger scale would be recommended to complement the present findings.
published_or_final_version
Orthopaedics and Traumatology
Master
Master of Philosophy

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Chan, Lai-ching Connie. "Applications of surface electromyography in the assessment of hyperfunctional dysphonia." Click to view the E-thesis via HKU Scholars Hub, 2007. http://lookup.lib.hku.hk/lookup/bib/B42004548.

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Thesis (B.Sc)--University of Hong Kong, 2007.
"A dissertation submitted in partial fulfilment of the requirements for the Bachelor of Science (Speech and Hearing Sciences), The University of Hong Kong, June 30, 2007." Includes bibliographical references (p. 26-28). Also available in print.

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Hsiang, Mina. "Surface electromyography of facilitated versus free arm activation after stroke." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/36785.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.
Includes bibliographical references (leaves 43-47).
The aim of this study is to determine if the amount of volitional muscle activation in a stroke affected arm is altered by facilitation. An experiment was designed in which surface EMG was recorded from the biceps brachii and triceps brachii of seven acute stroke patients, during three types of activities. Recordings are made during unassisted attempts at flexion and extension, weight bearing attempts through the arm, and therapist resistive facilitation. The results show that weight bearing and facilitation result in greater muscle activation, even in patients with fully paretic arms. Possible applications of this effect are discussed, particularly with regard to robotic therapy.
by Mina Hsiang.
M.Eng.

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Teaford, Max Allen. "Electromyography As A Means of Predicting The Rubber Hand Illusion." Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1617018796866146.

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Ivers, Matthew R. "A COMPARISON OF THE PLANK AND PERFECT PLANK USING ELECTROMYOGRAPHY." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1494947090917416.

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26

Yoshitake, Yasuhide. "Muscle Contractile Properties Investigated by Electromyography, Soundmyography, and Infrared Spectroscopy." Kyoto University, 1999. http://hdl.handle.net/2433/181868.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(人間・環境学)
甲第7915号
人博第58号
10||140(吉田南総合図書館)
新制||人||15(附属図書館)
UT51-99-G509
京都大学大学院人間・環境学研究科文化・地域環境学専攻
(主査)教授家森幸男, 教授田口貞善, 助教授森谷敏夫
学位規則第4条第1項該当

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Brown, Cindy Christine. "Reliability of electromyography detection systems for the pelvic floor muscles." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/948.

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DI, GIROLAMO MICHELA. "Post-stroke rehabilitation of hand function based on Electromyography biofeedback." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2729320.

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Choo, Ai Leen. "An electromyographic examination of lip asymmetry during speech and non-speech oral movements in adults who stutter." Thesis, University of Canterbury. Psychology, 2008. http://hdl.handle.net/10092/1722.

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Past research investigating stuttering has cited atypical cerebral lateralization in adults who stutter (AWS) during speech production. The purpose of this study was to measure cerebral activation in AWS as indicated by lip asymmetry. The study included five AWS (mean age = 26 years of age) and five adults who do not stutter (AWNS) (mean age = 25 years of age). The tasks included single-word productions, single-sentence readings and lip pursings. The peak electromyographic (EMG) amplitude was determined for the left upper, right upper, left lower and right lower lip quadrants around the mouth. Overall, EMG amplitudes were higher for the lower lip than the upper lip. Based on examination of peak EMG amplitude, significant differences were found between speaker groups. For both speech and non-speech tasks, the highest EMG amplitude for the AWS and AWNS groups were on the left lower and right lower sides of the mouth, respectively. The AWNS group showed strong correlations in EMG activity across the four lip sites (r>0.97), indicating an overall synchronous lip activity during speech and non-speech tasks. In contrast, the AWS group showed a strong correlation (r=0.97) only for the left upper and left lower lips while the other lip pairings were not strongly correlated (r<0.738) indicating otherwise reduced synchronous lip activity. While the small sample size suggests caution, clear differences in the pattern of lip EMG activity demonstrated in the present study provides evidence of differences between AWS and AWNS in the cerebral activation governing lip movement. The greater left lip activity observed in AWS was indicative of greater right hemisphere cerebral activation while increased right lip activity was indicative of greater left hemisphere participation in AWNS. The results of the present study provided support for the hypotheses of reversed lateralization for speech and non-speech processing and reduced coordination of speech musculature in AWS.

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Chan, Ping-hon. "Significance of latency change, amplitude change in intra-operative motor evoked potential by transcranial electrical stimulation during supratentorial craniotomy in predicting surgical outcome /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B3658647X.

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Sonoda, Humberto Massaru. "Avaliação clinica e eletromiografica de pacientes com ausencia das guias em caninos e incisivos, portadores de sinais e sintomas de desordens temporomandibulares, tratados com aparelhos oclusais planos." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/289073.

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Orientador: Frederico Andrade e Silva
Tese (doutorado) - Universidade Estadual de Campinas. Faculdade de Odontologia de Piracicaba
Made available in DSpace on 2018-08-15T12:14:08Z (GMT). No. of bitstreams: 1 Sonoda_HumbertoMassaru_D.pdf: 2523666 bytes, checksum: a837644195a81c0eb1bcd8bbdd12061f (MD5) Previous issue date: 2010
Resumo: O objetivo deste estudo foi avaliar clínica e eletromiograficamente a eficácia dos aparelhos oclusais planos em pacientes dentados, sem as guias anteriores (incisivos e caninos), com desordens temporomandibulares (DTM) de origem miogênica, e estabelecer, se possível, correlação entre os dois métodos de avaliação, além de investigar o efeito deste tipo de aparelho sobre o espaço funcional livre (EFL). Foram examinados dezenove pacientes de ambos os sexos, com idades entre 18 e 59 anos. As avaliações clínicas foram realizadas com auxílio de uma escala visual analógica (EVA) antes da instalação dos aparelhos oclusais planos (tempo zero - T0), após 30, 60 e 90 dias. No tempo 30 (T30), os aparelhos foram alterados e, sobre eles confeccionadas as guias anteriores. As avaliações eletromiográficas realizadas sobre os músculos temporais anteriores e masseteres foram obtidas antes e aos 30 e 60 dias da instalação dos aparelhos. Os resultados mostraram que ocorreram diferenças significativas entre os dados obtidos com a EVA nos diferentes tempos de avaliação (ANOVA; p<0,001), principalmente entre T0, T30 e T60. Além disso, se observou que o espaço funcional livre dos pacientes foi significantemente superior, em média, no T90 comparado ao T0 (teste t de Student; p<0,001). Os registros eletromiográficos revelaram valores variáveis entre os músculos estudados nos diferentes tempos de avaliação, porém na maioria deles, as diferenças não foram significantes (p>0,05), sugerindo que a melhora clínica da sintomatologia, não necessariamente foi acompanhada de uma redução da atividade eletromiográfica dos músculos envolvidos.
Abstract: The purpose of this study was to evaluate clinical and electromyographically, the effectiveness of the flat occlusal splints in dentate subjects, without the incisor and canine guidances, with signs and symptoms of myogenic temporomandibular disorders (TMD), and establish a correlation between the two methods of assessment, besides to investigate the effect of this appliance over the free-way space (FWS). Nineteen patients of both genders, aged between 18 and 59 years were examinated. The clinical evaluations were accomplished through a Visual Analogyc Scale (VAS) before the installation of the flat occlusal splints (zero time - T0), after 30, 60 and 90 days. At time 30 (T30), the splints were altered by placing the incisor and canine guidance over them. The electromyographic evaluations were realized on the anterior temporal muscles and masseter muscles, before the beginning of the treatment, 30 and 60 days after using the flat occlusal splints. The results revealed significant differences between the data obtained with VAS at different times of evaluation (ANOVA; p < 0,001), mainly between T0, T30 and T60. Moreover, it was observed that the free-way space of the patients was significantly higher, as a rule, at T90 than T0 (Student's t test; p< 0,001). The electromyographic records revealed variable values between the studied muscles at different times of evaluation, however, in most of them, the differences were not significant (p>0,05), suggesting that the clinical improvement of symptomatology, not always was attended by decreasing of the electromyographic activity of the involved muscles.
Doutorado
Protese Dental
Doutor em Clínica Odontológica

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Vera, Rosario Martha de La Torre 1981. "Estudo eletromiografico (de superficie) de musculos da mastigação em pacientes com e sem disfunção temporomandibular antes e depois do tratamento da cirurgia ortognatica." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/290898.

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Orientador: Fausto Berzin
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
Made available in DSpace on 2018-08-15T13:10:06Z (GMT). No. of bitstreams: 1 Vera_RosarioMarthadeLaTorre_M.pdf: 1075530 bytes, checksum: ef0a17b37af765f47297af2d3ddf9673 (MD5) Previous issue date: 2010
Resumo: As deformidades dentofaciais são alterações dos tecidos duros e moles que podem ser resultado da influência genética ou ambiental. A cirurgia ortognática possibilita a correção cirúrgica das deformidades dentofaciais e sua importância se dá não apenas pela correção da oclusão e da funcionalidade, mas também pela melhora da estética facial. Os objetivos foram (1) avaliar aspectos funcionais (atividade eletromiográfica) em diferentes momentos em repouso e na contração voluntária máxima (isometria) (2) Avaliar a presencia da sintomatologia dolorosa pré e pós-tratamento cirúrgico (3) Avaliar a simetria dos músculos da mastigação em diferentes movimentos mandibulares (isotonia e isometria) em pacientes classe III de Angle. Para a avaliação da sintomatologia dolorosa foi utilizado o questionário RDC/TMD o eixo I e II, posteriormente foi realizado o exame eletromiográfico com a finalidade de registrar a atividade do músculo masseter e da parte anterior do músculo temporal bilateralmente durante o repouso, isotonia e a isometria. Após a análise qualitativa do sinal, as variáveis de estudo foram: Amplitude (Root Mean Square (RMS)) e a simetria muscular estas avaliações foram realizadas pré tratamento (2 a 3 meses) e pós tratamento cirúrgico ( 2 e 6 meses) pós cirurgia ortognática. Este trabalho foi realizado em dois capítulos diferentes onde os resultados e conclusões mostram que a cirurgia ortognática tem um efeito de melhora de alguns sintomas e sinais das DTM pós tratamento cirúrgico para pacientes com prognatismo mandibular, também este tipo de tratamento cirúrgico influencia na mudança dos padrões do sinal eletromiográfico onde a variável simetria melhora nas diferentes posturas mandibulares após a cirurgia, em pacientes classe III de Angle (dentoesqueletica)
Abstract: Dentofacial deformities are alterations in hard and soft tissues that cold be result from genetic or environmental influences. Orthognathic surgery aims to demonstrate the improvement of the esthetic and functional deficits after surgery. The objectives were (1) to assess physical and funcional activity (EMG) in rest and isometric (2) evaluate the presence of painful symptoms before and after surgery (3) to assess the symmetry of masticatory's muscles in different jaw movements (isotonic and isometric). For the evaluation of painful symptoms was used questionnaire RDC / TMD axis I and II. The electromyographic were performed in all patients in the masseter and temporal muscles bilaterally during rest, isotonic and isometric. After the qualitative analysis of the signal, the variables were selected are: amplitude (Root Mean Square (RMS)) and Symmetry. These assessments were performed before treatment (2 to 3 months) and after surgical treatment (2 and 6 months). This study was conducted in two separate chapters where the results and conclusions show that in orthognathic surgery has a significant improvement in symptoms and signs of TMD after surgical treatment for patients with mandibular prognathism and orthognathic surgery also influences the changing patterns electromyographic signal and the variable symmetry improvement in different positions after mandibular surgery in patients class III of Angle
Mestrado
Anatomia
Mestre em Biologia Buco-Dental

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33

Siu, Hiu-fai. "Quantitative lumbar surface EMG topographic analysis comparison between normal and low back pain patients /." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B4327870X.

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Hwang, Ing-shiou. "Quantitative electromyographic analysis of synergy in neuromuscular control /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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Holtermann, Andreas. "Inhomogeneous activation of skeletal muscles. Investigated by multi-channel surface electromyography." Doctoral thesis, Norwegian University of Science and Technology, Department of Social Work and Health Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2111.

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Background

The current understanding of neuromuscular control is based on the related characteristics of the motoneuron (size) and its belonging muscle fibers resulting in a stereotyped activation of all motor units within a muscle. This “size principle” was originally founded on the anatomical and histochemical non-complex soleus muscle of decerebrated cats. However, deviations from this stereotyped control are observed during voluntary contractions in anatomical complex muscles. The main objective of this thesis was to investigate intra-muscular spatial dependency of activation, control and physiological characteristics of the anatomical complex biceps brachii and trapezius muscle with a multi-channel surface electromyographical (MCsEMG) technique.

Methods

MCsEMG recordings from the biceps brachii and the trapezius muscle were performed during isometric slow force modulation and sustained sub-maximal contractions. The applied MCsEMG grid consists of 13 by 10 surface electrodes covering 6 x 4.5 cm of the skin surface. To obtain information about recruitment of motor unit populations from a large fraction of the muscles, changes in spatial distribution of activity with force modulation and fatigue were quantified by correlating the root-mean-square amplitude from all electrodes at different time-epochs within and between contraction types. Frequency and duration of repeated shifts in activity between intra-muscular regions (differential activation) were investigated by calculating the average activity level from (electrodes situated above) the two heads of the biceps brachii, respectively, throughout a sustained sub-maximal contraction until exhaustion. To examine the distribution of common synaptic input to motoneurons innervating the biceps brachii with fatigue, a descriptor for motor unit synchronization was quantified based on changes in the monopolar MCsEMG signals during a sustained contraction. To attain in vivo information about intra-muscular distribution of physiological characteristics, the muscle fiber conduction velocity and fiber orientation were estimated based on detection of propagating motor unit action potentials from large fractions of the biceps brachii and the upper trapezius muscle with the MCsEMG technique.

Main findings and conclusions

The biceps brachii and the trapezius muscle were inhomogeneously activated during force regulation and fatigue due to recruitment of differently located motor units within the muscles. The changes in spatial distribution of biceps brachii activity with force gradation were consistent within and between subjects, indicating that changes in spatial distribution of intra-muscular activity are suited to attain information about recruitment of motor unit populations. The changes in spatial distribution of upper trapezius activity were similar during sustained and ramp contractions, indicating an orderly recruitment sequence of motor unit populations during sustained contractions. The regions (long and short head) of the biceps brachii were differentially activated during a sustained contraction, indicating a partially selective control of intra-muscular regions. However, this region-dependent activation of the biceps brachii muscle was not associated with time to exhaustion at a contraction level of 25 % of maximal voluntary contraction. The motor unit synchronization descriptor was different between regions within the biceps brachii muscle with fatigue, indicating an uneven distribution of common synaptic input to the motoneurons of the muscle. Consistent with studies of human cadavers, the muscle fiber characteristics were dependent on the intra-muscular regions of the upper trapezius muscle. The findings from this thesis support an intramuscular spatial dependency of the activation, control and physiological characteristics of the biceps brachii and the trapezius muscle.

Paper I, IV and V reproduced with kind permission of Elsevier, sciencedirect.com

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Makki, Ahmed Taha. "Subacromial impingement syndrome : a study using clinical, functional and electromyography assessments." Thesis, University of Liverpool, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.632135.

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Subacromial impingement syndrome (SIS) is the most common diagnosis made in patients with chronic shoulder pain, accounting for 44-65% of all complaints of shoulder pain. SIS is a clinical diagnosis describing a multifactorial pathology applied to a condition whose main clinical symptoms are anterior or anterior-lateral superior shoulder pain, associated with restricted elevation of the arm or when attempting overhead activities, but without specific clinical tests. This study uses a battery of clinical, functional and EMG investigations in well-defined patient and control groups, in order to identify and measure aberrations in shoulder movements common to patients with SIS, to establish the consequences for shoulder girdle control and ultimately to suggest which therapeutic strategies might be most successful.

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Mitchell, Jonathan. "Measurement Of Negative Affectivity In Psychometrically Defined Schizotypy Using Facial Electromyography." Master's thesis, University of Central Florida, 2013. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5673.

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Schizotypy is a sub-threshold syndrome associated with schizophrenia. Much of the research on schizotypy concerns its component features, one of which being blunted or constricted affect. While several investigations have addressed this common “negative” symptom within the context of schizophrenia, few have focused on schizotypy directly, and none have utilized psychophysiological measurement to examine affective constriction. The present investigation uses facial electromyography (EMG) to measure patterns of affective expression within a psychometrically defined schizotypal population when presented threatening and distressing pictures from the IAPS. Twenty-eight individuals with elevated schizotypal features and 20 healthy controls were recruited for this investigation. The participants observed the series of pictures and provided self-report ratings of affective valance and arousal while their physiological responses were recorded. The protocol used here closely matched that used by Bradley and Lang (2007) and produced a similar pattern of results across all participants on self-reported ratings and physiological measures. Results further suggest that those with schizotypal features did not differ from control participants in self-reported ratings of negative affect or autonomic arousal. A three-way interaction in facial EMG measurement revealed that while schizotypic males demonstrated the expected pattern of blunted facial affective expression, schizotypic females displayed the opposite pattern. That is, females with psychometrically schizotypy demonstrated significant elevations in negative facial affective expression while viewing distressing pictures. We argue that these findings reflect unidentified sex differences in affective expression in schizotypy, and we discuss implications for assessment and diagnostic procedures among individuals with personality disorders.
M.S.
Masters
Psychology
Sciences
Psychology Clinical

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Early, Jared W. Early. "Business Opportunity Analysis of Wearable and Wireless Electromyography Sensors in Athletics." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1470652934.

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Khan, Mohd Tauheed. "Multimodal Data Fusion Using Voice and Electromyography Data for Robotic Control." University of Toledo / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo156440368925597.

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Nelson, Julia Kathryn. "Shoulder Muscle Electromyography During Diagonal and Straight Plane Patterns of Movement." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc500786/.

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The purpose of this study was to further investigate the relationship between patterns of shoulder movement and muscular response. Thirteen females were tested against maximal manual resistance in twelve different patterns, eight straight plane, and four diagonal. Five of the six subjects who met established kinematic criteria were used for electromyographic (EMG) analysis of the anterior deltoid (AD), the middle deltoid, the posteroir deltoid (PD), and the pectoralis major. No significant differences were found between number of muscles solicited or duration of muscular effort during the different movements. Maximal EMG was significantly higher for the AD in abduction and in flexion than in the other patterns, and for the PD in diagonal flexion with abduction and in transverse abduction.

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Chen, Chu Jui. "Quantification of muscular demands in the elderly : electromyography vs. joint moments /." Connect to title online (Scholars' Bank), 2008. http://hdl.handle.net/1794/7480.

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Vigus, Tracy Lynn. "THE PHYSIOLOGICAL CORRELATES OF INTERNAL AND EXTERNAL IMAGERY (MENTAL PRACTICE, ELECTROMYOGRAPHY)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275467.

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Chen, Chu Jui 1981. "Quantification of Muscular Demands in the Elderly: Electromyography vs. Joint Moments." Thesis, University of Oregon, 2008. http://hdl.handle.net/1794/7480.

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xi, 75 p. : ill. A print copy of this title is available through the UO Libraries under the call numbers: SCIENCE QP310.W3 C44 2008
This study was performed to evaluate the sensitivity of using electromyography (EMG) and joint moment to quantify muscular challenges in elderly adults. Twenty elderly and young adults walked on level ground and crossed an obstacle. Resultant hip, knee, and ankle joint moments and EMG data from muscles of the dominant leg were analyzed. Older adults demonstrated significantly greater normalized EMG (N-EMG) magnitudes than young adults in most muscles. However, only hip abductor moment demonstrated significant group differences. Stepping over a higher obstacle resulted in greater N-EMG magnitudes in all muscles. Leading limb knee extensor moment was found to significantly decrease with increasing obstacle height, while N-EMGs of knee joint muscles increased. Our findings suggest that N-EMG, which can better account for co-activation of agonist and antagonist muscles, might be a more sensitive parameter than the joint moment in detecting age- and task-related differences.
Adviser: Li-Shan Chou

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Kawnine, Tanzim. "A Radial-Ulnar Deviation and Wrist-Finger Flexion Analysis Based on Electromyography." Thesis, Mälardalen University, Department of Computer Science and Electronics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-7329.

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This study is aimed to determine the electromyographic signals of the forearm, using Ag/AgCl electrodes. The four major muscles of forearm, which are providing the bioelectrical currents, have been displayed and analysed to determine the different activities. In order to record the signals, an EMG device has been developed and installed and a schematic has also been presented in this paper.

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Weames, Greg G. "Comparison of the 1991 NIOSH lifting equation and erector spinae muscle electromyography." Thesis, University of Ottawa (Canada), 1995. http://hdl.handle.net/10393/9913.

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This study determined whether lifts rated as acceptable by the 1991 NIOSH equation calculations elicited myoelectric amplitudes of the erector spinae musculature (ES) within acceptable muscular load limits for continuous repetitive lifting tasks. Ten male subjects had surface electrodes placed bilaterally along the spine at levels T9, L1 and L3, 4 cm, 9 cm nd 3 cm lateral to the midline, respectively. Each subject performed eight trials of five lifting conditions that were used to examine the horizontal factor (HF) and asymmetrical factor (AF) of the 1991 NIOSH equation. All lifts were ordered randomly and initiated and terminated in a standing position. The lifting motion was unconstrained and incorporated a "flatback", free-style lifting technique. EMG data were collected and linear envelopes (LE) were ensemble averaged across subject trials for each condition and normalized to a maximum voluntary contraction (MVC). Subject LE EMGs were ensemble averaged to generate condition LE EMG averages and subsequently converted to amplitude probability distribution functions (APDF). Percent MVC values from the APDF curves were compared to muscular load limits. A three-way, repeated measures, mixed model analysis of variance determined significant main effects for conditions, electrode placements and probability levels of the APDFs. There was general agreement between the 1991 NIOSH equation and muscular load limits. Bilateral T9 ES often exceeded "static" muscular loads and right L3 often exceeded "static" and "median" muscular loads. There was a significant (p 0.01) difference for each main effect. The APDF EMG analysis was more sensitive to differentiating between conditions than the 1991 NIOSH equation. Phasic and amplitude EMG analysis of the ES for occupational lifting tasks could be best represented by the musculature at L3, 3 cm lateral to the midline.

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Wang, Le-chun, and 王樂羣. "ELECTROMYOGRAPHY ARMBANDS ON ROBOT CONTROL." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/03167289815540117270.

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碩士
大同大學
機械工程學系(所)
104
The purpose of the thesis is measuring surface electromyography singnal(sEMG) on specific gestures with Myo armband . Rectification of sEMG signals,wavelet transtorm and time domain analysis. Next using neural network classifier on MATLAB training it. Fianl using the results control robot hand.

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YANG, ZHI-WEI, and 楊志偉. "Pattern analysis of multichannel electromyography." Thesis, 1992. http://ndltd.ncl.edu.tw/handle/97921826387268828372.

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FAN, GUO-LUN, and 范國綸. "Development of Wireless Electromyography control device." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/58528042475607451077.

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碩士
元培醫事科技大學
生物醫學工程系福祉科技與醫學工程碩士班
105
Electromyography had been applied on prosthetic designs for many years. This paper attempts to design a wireless EMG system that can control the action of mobile devices. Users can perform remote control a robot through a simple training. Electromyography (EMG) signals were recorded from rectus femoris and biceps femoris, then filtered and processed by using a microchip. Finally, an output signal was transmitted by Bluetooth to robot to control its movements. The mobile robot can carry out four movements such as go forward or backward and turn left or turn right under the controlling of user's EMG signal. In the study, the characteristic parameters of EMG signals of four movements were analyzing and then write the program for signal processing procedures. The research results can be applied on the assistive system for disabled person and wearable wireless control system.

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Lin, Yue-Ren, and 林裕人. "Bispectral Analysis of Multichannel Surface Electromyography." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/04438481774768838588.

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Kau, Shi-Long, and 郭士龍. "The Electromyography Analysis of VolleyballSpiking-related Muscles." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/13575307940507472467.

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碩士
國立體育學院
教練研究所
92
The purpose of this study was to investigate the muscle activation of volleyball spiking-related muscles. 10 male volleyball athletes in National Hsin-Chu Teachers College served as subjects, and divided into 5 lay-outs and 5 substitutes. Recorded the electromyogram responses of 8 spiking-related muscles of the initial acceleration phase, later acceleration phase and hitting phase to investigate the muscle activation and the co-contraction of antagonist and agonist. Besides, the spiking swing movement was taken with JVC high-speed camera. It made use the difference of velocity of swing movement and the difference of angular velocity of elbow and wrist in hitting instant to represent the mechanical chain motion sequence principle. The data of this study was analyzed by independent t-test to compare the difference between the lay-out and substitutes. The alpha level was set at .05. The findings were as follows: 1. The lay-outs could control the use of agonist strength and catch the relaxation feeling of antagonist in initial acceleration phase. In order to increase the stability of forearm and wrist, during the hitting phase, the antagonist possessed a stronger activation. 2. Among these three phases, the lay-outs, biceps brachii activation were extent totally superior to substitute (p<.05). The triceps and the flexor carpi had remarkable activation in hitting phase (p<.05). 3. The lay-outs held a better swing velocity and conformed to the mechanical chain motion sequence principle than the substitutes (p<.05). It was suggested that enhance the contraction velocity of biceps brachii, flexor carpi and triceps could elaborate spiking power.

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Dissertations / Theses on the topic 'Electromyography'

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