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Electromyography

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https://www.readbyqxmd.com/read/29050157/-observation-of-clinical-and-electrophysiological-features-in-patients-with-distal-myasthenia-gravis
#1
F Jian, H B Wang, N Chen, S Yang, Y Liu, Y Z Zhao, L Zhang, H Pan, X H Zhang
Objective: To explore the clinical and electrophysiological features and prognosis of distal myasthenia gravis (MG). Methods: Data of MG patients in Beijing Tiantan Hospital from October 2016 to March 2017 were reviewed, including thorough neurological examinations, nerve conduction studies, repetitive nerve stimulations (RNS) and needle electromyographies. Distal MG patients were included and were analyzed as to their clinical and electrophysiological features and response to treatments. Results: Four patients (7...
October 10, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29048235/role-of-constant-random-and-blocked-practice-in-an-electromyography-based-oral-motor-learning-task
#2
Ramesh Kaipa, Roha Mariam Kaipa
PURPOSE: The role of principles of motor learning (PMLs) in speech has received much attention in the past decade. Oral motor learning, however, has not received similar consideration. This study evaluated the role of three practice conditions in an oral motor tracking task. METHOD: Forty-five healthy adult participants were randomly and equally assigned to one of three practice conditions (constant, blocked, and random) and participated in an electromyography-based task...
October 19, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/29046798/monitoring-of-recurrent-and-superior-laryngeal-nerve-function-using-an-airwayscope%C3%A2-during-thyroid-surgery
#3
Kei Ijichi, Hiroshi Sasano, Megumi Harima, Shingo Murakami
In thyroid surgery, intraoperative identification and preservation of the recurrent laryngeal nerve (RLN) and superior laryngeal nerve external branch (SLNEB) are crucial. Several reports have proposed that electromyography (EMG) monitoring is an acceptable adjunct for identification and preservation of the RLN. However, a limited number of hospitals have access to an EMG monitoring system. Therefore, the development of another viable monitoring method is required. The aim of the present study was to design a new RLN and SLNEB monitoring method combining an Airwayscope™ (AWS) and a facial nerve stimulator...
October 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29043378/-neurogenic-myopathies-and-imaging-of-muscle-denervation
#4
REVIEW
M Wolf, C Wolf, M-A Weber
CLINICAL ISSUE: Neurogenic myopathies are primary diseases of the nervous system, which secondarily result in denervation of the target musculature. The spectrum of potential causes is manifold ranging from acute traumatic injuries and chronic compression to neurodegenerative, inflammatory, metabolic and neoplastic processes. STANDARD DIAGNOSTIC METHODS: The medical history, clinical neurological examination, and electrophysiological tests including electromyography and nerve conduction studies are crucial in diagnosing neuropathic myopathies...
October 17, 2017: Der Radiologe
https://www.readbyqxmd.com/read/29043110/neurodynamic-mobilization-and-foam-rolling-improved-delayed-onset-muscle-soreness-in-a-healthy-adult-population-a-randomized-controlled-clinical-trial
#5
Blanca Romero-Moraleda, Roy La Touche, Sergio Lerma-Lara, Raúl Ferrer-Peña, Víctor Paredes, Ana Belén Peinado, Daniel Muñoz-García
OBJECTIVES: Compare the immediate effects of a Neurodynamic Mobilization (NM) treatment or foam roller (FR) treatment after DOMS. DESIGN: Double blind randomised clinical trial. SETTING: The participants performed 100 drop jumps (5 sets of 20 repetitions, separated by 2 min rests) from a 0.5-m high box in a University biomechanics laboratory to induce muscle soreness. The participants were randomly assigned in a counter-balanced fashion to either a FR or NM treatment group...
2017: PeerJ
https://www.readbyqxmd.com/read/29041823/therapists-cues-influence-lower-limb-muscle-activation-and-kinematics-during-gait-training-in-subacute-stroke
#6
Michelle Ploughman, Jennifer Shears, Susan Quinton, Cordell Flight, Michelle O'Brien, Phillip MacCallum, Megan C Kirkland, Jeannette M Byrne
PURPOSE: Symmetrical gait is a key goal of rehabilitation post-stroke. Therapists employ techniques such as verbal instruction and haptic cues to increase activation of paretic muscles. We examined whether verbal or tactile cueing altered spatiotemporal gait parameters, kinematics and electromyography (EMG) of lower limb muscles on the more-affected side within a training session. MATERIALS AND METHODS: Patients (n = 10) were recruited from rehabilitation services (<9 months post-stroke)...
October 17, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29040777/efficient-imaging-examining-the-value-of-ultrasound-in-the-diagnosis-of-traumatic-adult-brachial-plexus-injuries-a-systematic-review
#7
Brian Chin, Maleka Ramji, Forough Farrokhyar, James R Bain
INTRODUCTION: Traumatic brachial plexus injury (BPI) can result in debilitating sequelae of the upper extremity. Presently, therapeutic decisions are based on the mechanism of injury, serial physical examination, electromyography, nerve conduction, and imaging studies. While magnetic resonance imaging is the current imaging modality of choice for BPI, ultrasound is a promising newcomer that is inexpensive, accessible, and available at point of care. OBJECTIVE: To evaluate ultrasound as a diagnostic tool in the assessment of traumatic adult BPI through a systematic review...
October 11, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29038360/carotid-sinus-hypersensitivity-block-of-the-sternocleidomastoid-muscle-does-not-affect-responses-to-carotid-sinus-massage-in-healthy-young-adults
#8
Matthew G Lloyd, James M Wakeling, Michael S Koehle, Robert J Drapala, Victoria E Claydon
The arterial baroreflex is crucial for short-term blood pressure control - abnormal baroreflex function predisposes to syncope and falling. Hypersensitive responses to carotid baroreflex stimulation using carotid sinus massage (CSM) are common in older adults and may be associated with syncope. The pathophysiology of this hypersensitivity is unknown, but chronic denervation of the sternocleidomastoid muscles is common in elderly patients with carotid sinus hypersensitivity (CSH), and is proposed to interfere with normal integration of afferent firing from the carotid baroreceptors with proprioceptive feedback from the sternocleidomastoids, producing large responses to CSM...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/29037642/rebound-boots-change-lower-limb-muscle-activation-and-kinematics-during-different-fitness-exercises
#9
Mateus Rossato, Rodolfo André Dellagrana, Juliane Cristine Lopes Dos Santos, Felipe P Carpes, Rodrigo Ghedini Gheller, De Angelys de Ceselles Seixas da Silva, Ewertton de Souza Bezerra, João Otacílio Libardoni Dos Santos
The purpose of this study was to evaluate electromyography and kinematic parameters of the lower limbs using rebound boots (RB) and barefoot during a gym workout. This information can be helpful to practitioners to schedule rehabilitation and training programs. Ten women (25 ± 9 years) volunteered for the study; inclusion criteria were as follows: subjects must have experienced the use of RB and the analyzed exercises for at least 6 months, and have no previous injuries in the lower limbs. Seven exercises were performed for 30 s with the RB and subsequently barefoot...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29037618/immediate-effect-of-mental-practice-with-and-without-mirror-therapy-on-muscle-activation-in-hemiparetic-stroke-patients
#10
Tamise Aguiar Caires, Luciane Fernanda Rodrigues Martinho Fernandes, Lislei Jorge Patrizzi, Rafael de Almeida Oliveira, Luciane Aparecida Pascucci Sande de Souza
Mental practice (MP) consists of the repeated mental rehearsal of a physical skill without movement, called motor imagery (MI). Studies show that MP and MI associated mirror therapy (MPMT) may improve muscle control of the upper limbs in hemiparesis. This study aimed to evaluate muscle activation during active flexion of the wrist (MA), MP, and MPMT in patients with history of stroke and hemiparesis. Individuals diagnosed with stroke showing sequelae of upper limb hemiparesis were enrolled. The flexor carpi ulnaris was analyzed using electromyography during tasks (MA, MP, MPMT) involving wrist flexion...
October 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29037443/a-comprehensive-assessment-of-the-musculoskeletal-system-the-cams-knee-data-set
#11
William R Taylor, Pascal Schütz, Georg Bergmann, Renate List, Barbara Postolka, Marco Hitz, Jörn Dymke, Philipp Damm, Georg Duda, Hans Gerber, Verena Schwachmeyer, Seyyed Hamed Hosseini Nasab, Adam Trepczynski, Ines Kutzner
Combined knowledge of the functional kinematics and kinetics of the human body is critical for understanding a wide range of biomechanical processes including musculoskeletal adaptation, injury mechanics, and orthopaedic treatment outcome, but also for validation of musculoskeletal models. Until now, however, no datasets that include internal loading conditions (kinetics), synchronized with advanced kinematic analyses in multiple subjects have been available. Our goal was to provide such datasets and thereby foster a new understanding of how in vivo knee joint movement and contact forces are interlinked - and thereby impact biomechanical interpretation of any new knee replacement design...
October 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29033217/normalization-of-the-trapezius-semg-signal-a-reliability-study-on-women-with-and-without-neck-shoulder-pain
#12
Marina Machado Cid, Leticia Bergamin Januario, Gisele Garcia Zanca, Stela Marcia Mattiello, Ana Beatriz Oliveira
OBJECTIVE: To evaluate within- and between-days reliability of two normalization methods of surface electromyography (sEMG) recordings of the trapezius muscle. METHODS: Nineteen women were allocated into 2 groups (healthy and with neck-shoulder pain). The sEMG was recorded in two sessions with 7 days in between sessions. The four portions of the trapezius muscle (the clavicular and acromial fibers of the upper trapezius, the middle and the lower trapezius) were evaluated during maximal and submaximal isometric voluntary contractions...
September 29, 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/29032220/electodiagnostic-and-advanced-neuro-imaging-characterization-for-successful-treatment-of-a-spinal-extradural-arachnoid-cyst
#13
Tomoko Tanaka, Raja S Boddepalli, Douglas C Miller, Zongxian Cao, Vivek Sindhwani, Joan R Coates, Raghav Govindarajan, N Scott Litofsky
BACKGROUND: Spinal extradural arachnoid cysts (SEAC) are relatively uncommon. However, several large cysts have presented with spinal cord compression requiring surgical intervention. CASE DESCRIPTION: We report a patient with progressively enlarging SEAC causing worsening right S1 radiculopathy and gastrocnemius muscle atrophy. Electromyography (EMG) and nerve conduction studies (NCS) revealed an S1 motor radiculopathy. Serial magnetic resonance imaging (MRI) findings confirmed enlargement of the small cyst originating from the sacral thecal sac on the right while two smaller cyst on the left remained stable...
October 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29031749/vagal-nerve-stimulator-induced-chin-electromyography-artifact
#14
Pradeep C Bollu, Sivaraman Manjamalai
No abstract text is available yet for this article.
October 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29029335/cortical-reorganization-in-dual-innervation-by-single-peripheral-nerve
#15
Mou-Xiong Zheng, Yun-Dong Shen, Xu-Yun Hua, Ao-Lin Hou, Yi Zhu, Wen-Dong Xu
BACKGROUND: Functional recovery after peripheral nerve injury and repair is related with cortical reorganization. However, the mechanism of innervating dual targets by 1 donor nerve is largely unknown. OBJECTIVE: To investigate the cortical reorganization when the phrenic nerve simultaneously innervates the diaphragm and biceps. METHODS: Total brachial plexus (C5-T1) injury rats were repaired by phrenic nerve-musculocutaneous nerve transfer with end-to-side (n = 15) or end-to-end (n = 15) neurorrhaphy...
September 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29028499/fasciculations-in-nerve-and-muscle-disorders-a-prospective-study-of-muscle-ultrasound-compared-to-electromyography
#16
M T Johansson, H R Ellegaard, H Tankisi, A Fuglsang-Frederiksen, E Qerama
OBJECTIVES: We examined the clinical utility of muscle ultrasound (MUS) in detecting fasciculations in patients with nerve and muscle disorders (NMD) and investigated the impact on diagnostic sensitivity when combining electromyography (EMG) and MUS. METHODS: We included 58 consecutive patients suspected to have NMD and 38 healthy subjects (HS). Patients and HS underwent MUS in 14 skeletal and two bulbar muscles and the video recordings of the MUS were anonymised...
September 22, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29023548/comparison-of-six-electromyography-acquisition-setups-on-hand-movement-classification-tasks
#17
Stefano Pizzolato, Luca Tagliapietra, Matteo Cognolato, Monica Reggiani, Henning Müller, Manfredo Atzori
Hand prostheses controlled by surface electromyography are promising due to the non-invasive approach and the control capabilities offered by machine learning. Nevertheless, dexterous prostheses are still scarcely spread due to control difficulties, low robustness and often prohibitive costs. Several sEMG acquisition setups are now available, ranging in terms of costs between a few hundred and several thousand dollars. The objective of this paper is the relative comparison of six acquisition setups on an identical hand movement classification task, in order to help the researchers to choose the proper acquisition setup for their requirements...
2017: PloS One
https://www.readbyqxmd.com/read/29023324/the-physical-response-to-a-simulated-period-of-soccer-specific-fixture-congestion
#18
Richard M Page, Kelly Marrin, Chris M Brogden, Matt Greig
The aim of this study was to assess the physiological, perceptual, and mechanical measures associated with the completion of a simulated period of short-term soccer-specific fixture congestion. Ten male semi-professional soccer players completed three trials of a treadmill-based match simulation, with 48 hours intervening each trial. A repeated measures general linear model identified significantly (P= 0.02) lower knee flexor peak torque (PT) recorded at 300 degs[BULLET OPERATOR]s in the second (141.27 ± 28...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29020054/a-novel-approach-for-automatic-visualization-and-activation-detection-of-evoked-potentials-induced-by-epidural-spinal-cord-stimulation-in-individuals-with-spinal-cord-injury
#19
Samineh Mesbah, Claudia A Angeli, Robert S Keynton, Ayman El-Baz, Susan J Harkema
Voluntary movements and the standing of spinal cord injured patients have been facilitated using lumbosacral spinal cord epidural stimulation (scES). Identifying the appropriate stimulation parameters (intensity, frequency and anode/cathode assignment) is an arduous task and requires extensive mapping of the spinal cord using evoked potentials. Effective visualization and detection of muscle evoked potentials induced by scES from the recorded electromyography (EMG) signals is critical to identify the optimal configurations and the effects of specific scES parameters on muscle activation...
2017: PloS One
https://www.readbyqxmd.com/read/29019467/online-adaptive-neural-control-of-a-robotic-lower-limb-prosthesis
#20
John Spanias, Ann M Simon, Suzanne Finucane, Eric Perreault, Levi Hargrove
OBJECTIVE: The purpose of this study was to develop and evaluate an adaptive intent recognition algorithm that continuously learns to incorporate a lower limb amputee's neural information (acquired via electromyography [EMG]) as they ambulate with a robotic leg prosthesis. APPROACH: We present a powered lower limb prosthesis that was configured to acquire the user's neural information and kinetic/kinematic information from embedded mechanical sensors, and identify and respond to the user's intent...
October 11, 2017: Journal of Neural Engineering
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