Bibliografias temáticas / Electromygraphy

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Literatura científica selecionada sobre o tema "Electromygraphy"

Autor: Grafiati

Publicado: 8 de fevereiro de 2025

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Artigos de revistas sobre o assunto "Electromygraphy"

Luciano, C. A. "Principles of Clinical Electromygraphy: Case Studies". Archives of Neurology 56, n.º 6 (1 de junho de 1999): 758—a—759. http://dx.doi.org/10.1001/archneur.56.6.758-a.

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Onodera, Andrea N., Aline A. Gomes, Denise Pripas, Rinaldo A. Mezzarane e Isabel C. N. Sacco. "Lower limb electromygraphy and kinematics of neuropathic diabetic patients during real-life activities: Stair negotiation". Muscle & Nerve 44, n.º 2 (22 de junho de 2011): 269–77. http://dx.doi.org/10.1002/mus.22072.

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Tigre, Joseph Yunga, Andrew J. Kloehn, Ava Scemama, James Boddu, Meredith C. Costello, Allan D. Levi e S. Shelby Burks. "Resection of a lumbar intradural tumor". Surgical Neurology International 14 (20 de outubro de 2023): 377. http://dx.doi.org/10.25259/sni_770_2023.

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Background: Myxopapillary ependymomas and schwannomas represent the most common tumors of the conus medullaris and cauda equina. Here, we present the surgical resection of a 64-year-old male with a lumbar intradural tumor. Case Description: A 64-year-old male presented with several months of the lower extremity weakness, pain, and bowel/bladder dysfunction. Magnetic resonance imaging demonstrated a large L3–5 intradural lesion, and surgical resection using intraoperative neuromonitoring with somatosensory evoked potentials (SSEPs), motor evoked potentials (MEPs), free-running electromygraphy (EMGs), and direct sphincter monitoring was recommended. After an L2-S1 laminectomy was performed, intraoperative ultrasound was used to confirm the cranial and caudal extent of the tumor. The dural was opened using a midline approach, and the tumor was quickly visualized. Through careful dissection, the tumor was debulked and gross total resection was ultimately achieved through a piecemeal resection. Hemostasis was frequently required throughout the case, as the tumor was highly vascular. Postoperatively, the patient was at his neurologic baseline and was discharged to rehab on postoperative day 4. The final pathology revealed the intradural lesion was a paraganglioma. Conclusion: Early intervention and gross total resection of spinal intradural tumors are associated with optimal patient outcomes. Additional adjuncts, such as ultrasound, are beneficial and can help achieve gross total tumor resection.

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Ellerby, D. J., J. D. Altringham, T. Williams e B. A. Block. "Slow muscle function of Pacific bonito (Sarda chiliensis) during steady swimming". Journal of Experimental Biology 203, n.º 13 (1 de julho de 2000): 2001–13. http://dx.doi.org/10.1242/jeb.203.13.2001.

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The Pacific bonito, Sarda chiliensis, is anatomically intermediate between mackerel and tuna. The specialisations exhibited by tuna are present in the bonito, but to a lesser degree. Slow-twitch muscle strain and activity patterns were determined during steady swimming (tailbeat frequency 1.2-3.2 Hz) at four locations on the body of Sarda chiliensis using sonomicrometry and electromyography. Both strain and the phase of electromygraphic activity were independent of tailbeat frequency. The strain of superficial slow-twitch muscle increased from +/−3.1 % l(0) at 0.35FL to +/−5.8 % l(0) at 0.65FL, where l(0) is muscle resting length and FL is the body length from snout to tail fork. Between 0.35 and 0.65FL, there was a negative phase shift of 16 degrees in the onset of electromygraphic activity in superficial slow-twitch muscle relative to the strain cycle. Muscle activity patterns are comparable with those of tuna. At 0.58FL, the onset of activity in deep slow-twitch muscle was approximately synchronous with the onset of activity in superficial muscle in the same myotome at 0.65FL. The distribution of slow-twitch muscle along the body of Sarda chiliensis and four additional fish species, Anguilla anguilla, Oncorhynchus mykiss, Scomber scombrus and Thunnus albacares, was also measured. Slow-twitch muscle appears to become more concentrated at approximately 0.5FL as swimming kinematics become more thunniform.

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Astami, Kastam, e Arga Aridarma. "Toward Applications of EMG and Preliminary Study in the Next Design of Compact Integrated Bio-Signal Recording System". International Journal of E-Health and Medical Communications 1, n.º 3 (julho de 2010): 57–66. http://dx.doi.org/10.4018/jehmc.2010070106.

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Electromygraph or EMG is a device used to measure and record muscle signal. The developments of microelectronics allow the design and realization of such a device with current off-shelf components. The authors developed system consists of multi-channel analog circuitry and is microcontroller based to facilitate connectivity with a computer or laptop as a recording platform. From this developed system, the authors further improve the system by referring to the previous result. One of the improvements is the user controllable gain of each channel. However, beyond the improvement to the system, the use it in an acupuncture experiment for recording muscle signal during the acupuncture process. This paper also explores the possibility of implementing muscle signal as a control for an assistive system and integrating it for an integrated bio-signal recording system.

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Cuddeford, Tyler, Ann K. Williams e John M. Medeiros. "Electromygraphic Activity of the Vastus Medialis Oblique and Vastus Lateralis Muscles During Selected Exercises". Journal of Manual & Manipulative Therapy 4, n.º 1 (janeiro de 1996): 10–15. http://dx.doi.org/10.1179/jmt.1996.4.1.10.

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HAZAKI, Kan, e Noriaki ICHIHASHI. "The Effect of Position during Muscle Setting: Analysis of the Electromygraphic Activity of the Superficial Quadriceps." Rigakuryoho kagaku 11, n.º 2 (1996): 81–84. http://dx.doi.org/10.1589/rika.11.81.

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Dreher, Thomas, Reinald Brunner, Dóra Vegvari, Daniel Heitzmann, Simone Gantz, Michael W. Maier, Frank Braatz e Sebastian I. Wolf. "Development of muscle tone and electromygraphic patterns after muscle-tendon surgery in children with spastic diplegia". Gait & Posture 38 (novembro de 2013): S80—S81. http://dx.doi.org/10.1016/j.gaitpost.2013.07.170.

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Abd El Hameed, Hala. "IMPACT OF NYLON INSERTS FOR THE LOCATOR ATTACHMENT ON FUNCTIONAL ADAPTATION FOR MANDIBULAR OVER DENTURE WEARER (ELECTROMYGRAPHIC ANALYSIS)". Egyptian Dental Journal 66, n.º 2 (1 de abril de 2020): 1195–204. http://dx.doi.org/10.21608/edj.2020.24155.1032.

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Ehny, Jean-Philippe, Yoshimasa Sagawa, Laurent Tatu, Ludivine Chamard, Bernard Parratte e Pierre Decavel. "Locomotor aspects in the hereditary spastic paraplegia, spatio-temporal and electromygraphic analyzes in a prospective cohort of twelve patients". Annals of Physical and Rehabilitation Medicine 59 (setembro de 2016): e119-e120. http://dx.doi.org/10.1016/j.rehab.2016.07.270.

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Mais fontes

Teses / dissertações sobre o assunto "Electromygraphy"

Quesada, Lucas. "Vers un contrôle d'assistance intuitif d'un exosquelette via les signaux électromyographiques". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASW009.

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Les exosquelettes sont des dispositifs prometteurs notamment pour la prévention de troubles musculo-squelettiques, pour la rééducation post-AVC ou pour compenser les pertes motrices après une lésion médullaire. Afin de pouvoir intégrer l'industrie, les hôpitaux ou les résidences, ils doivent cependant être contrôlés de manière adaptée.Pour cela, il est d'abord nécessaire d'établir quelle assistance doit être apportée lors du mouvement de l'utilisateur. Ces travaux de thèse ont donc d'abord visé à développer et évaluer des techniques de détection d'intention basées sur les signaux électromyographiques. L'évaluation de leur précision a alors montré que le mouvement que l'utilisateur souhaite effectuer et la force qu'il souhaite appliquer à son environnement peuvent être estimés en temps réel à partir de ces signaux.Une fois cette évaluation effectuée, ces travaux ont ensuite été dédiés au développement d'un contrôleur d'assistance exploitant cette estimation. Plusieurs contrôleurs ont alors été proposés et testés sur une tâche fonctionnelle de déplacement d'une masse d'un point à un autre. Les variables liées à l'énergie mécanique et l'intuitivité du mouvement ont ainsi été évaluées, montrant la réduction de l'effort de l'utilisateur assisté, et l'existence d'un compromis entre l'intuitivité et la force de l'assistance. Ces travaux ouvrent des perspectives intéressantes quant à l'utilisation de signaux électromyographiques dans le cadre de l'assistance au mouvement dans un exosquelette
Exoskeletons are promising devices, particularly for the prevention of musculoskeletal disorders, post-stroke rehabilitation or compensating for motor loss after spinal cord injury. However, they need to be properly controlled before they can be used in industry, hospitals or homes.To achieve this, it is first necessary to establish what assistance needs to be provided during the user's movement. The aim of this thesis work was therefore first to develop and evaluate intention detection techniques based on electromyographic signals. Evaluation of their accuracy showed that the movement the user wishes to make and the force he wishes to apply to his environment can be estimated in real time from these signals.Once this assessment had been made, this work was then dedicated to the development of an assistance controller exploiting this estimation. Several controllers were proposed and tested on the functional task of moving a mass from one point to another. Variables linked to the mechanical energy and intuitiveness of the movement were evaluated, demonstrating the reduction in effort required by the assisted user, and the existence of a compromise between intuitiveness and the strength of the assistance. This work opens up interesting prospects for the use of electromyographic signals to assist movement in an exoskeleton

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Capítulos de livros sobre o assunto "Electromygraphy"

Shiva, Jayendhra, Navaneethakrishna Makaram, P. A. Karthick e Ramakrishnan Swaminathan. "Emotion Recognition Using Spectral Feature from Facial Electromygraphy Signals for Human-Machine Interface". In Studies in Health Technology and Informatics. IOS Press, 2021. http://dx.doi.org/10.3233/shti210207.

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Recognition of the emotions demonstrated by human beings plays a crucial role in healthcare and human-machine interface. This paper reports an attempt to classify emotions using a spectral feature from facial electromyography (facial EMG) signals in the valence affective dimension. For this purpose, the facial EMG signals are obtained from the DEAP dataset. The signals are subjected to Short-Time Fourier Transform, and the peak frequency values are extracted from the signal in intervals of one second. Support vector machine (SVM) classifier is used for the classification of the features extracted. The extracted feature can classify the signals in the valence dimension with an accuracy of 61.37%. The proposed feature could be used as an added feature for emotion recognition, and this method of analysis could be extended to myoelectric control applications.

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Trabalhos de conferências sobre o assunto "Electromygraphy"

Ahsan, Md Rezwanul, Muhammad Ibn Ibrahimy e Othman O. Khalifa. "Electromygraphy (EMG) signal based hand gesture recognition using artificial neural network (ANN)". In 2011 4th International Conference on Mechatronics (ICOM). IEEE, 2011. http://dx.doi.org/10.1109/icom.2011.5937135.

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Helmi, Muhammad Hazimin Bin, Chew Sue Ping, Nur Elliza Binti Ishak, Mohd Alimi Bin Mohd Saad e Anis Shahida Niza Binti Mokhtar. "Assessment of muscle fatigue using electromygraphm sensing". In INTERNATIONAL CONFERENCE ON APPLIED PHYSICS AND ENGINEERING (ICAPE2016): Proceedings of the 2nd International Conference on Applied Physics and Engineering. Author(s), 2017. http://dx.doi.org/10.1063/1.4998390.

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Bellannagari, Pranav, Sohail H. Zaidi e Vimal Viswanathan. "Development of a Bio-Chair Using Electromygraphic Actuation for Rehabilitation Excercises". In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-114245.

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Abstract Traditional rehabilitation exercises are required for patients who have partially lost their mobility and intend to regain it to walk freely without any external assistance. Selective exoskeleton devices are commercially availble that rely on mechanical systems to conduct such rehabilitation exercises. Such devices are expensive and are not suitable for patients who are unable to stand. In the current work, a commercially available wheelchair is modified to incorporate new features of the proposed bio-chair. In order to operate the leg supporting plates, several components, including ball-screw mechanical actuators, motors, and L-shaped power transmitting shafts, were conceived and built. Ball screw mechanical actuators and motor holders were made via 3D printing. The angular motion of the leg supporting plates was used to calibrate the linear movement of the ball-screw nut. To determine the motors that are most suitable for operation by providing enough torque, basic calculations were performed. A unique feature of the bio-chair is that it enables the user to use his leg muscle’s power to trigger the bio-chair operation to conduct rehabilitation exercises to regain his/her mobility. The final design is fabricated and tested in this work. Initial operation results are included.

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