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Electrical muscle stimulation

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https://www.readbyqxmd.com/read/28937422/placement-of-stimulating-epidural-catheter-for-a-patient-with-large-scapular-sarcoma-a-case-report
#1
James D Turner, Sean W Dobson, Robert S Weller, Christopher M Lack, Daryl S Henshaw
We report the use of continuous electrical stimulation to assist with the preoperative placement of a thoracic epidural which was used to provide postoperative analgesia in a patient undergoing excision of a large scapular sarcoma. The size of the sarcoma and the surrounding area required to maintain a sterile surgical field necessitated that the epidural catheter be inserted several vertebral interspaces caudal to the level of desired catheter tip termination. The use of electrical stimulation allowed for sequential intercostal muscle stimulation during threading, which enabled the placement of the catheter tip at the appropriate spinal level to optimize analgesia...
September 20, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28935826/immediate-effect-of-laryngeal-surface-electrical-stimulation-on-swallowing-performance
#2
Keizo Takahashi, Kazuhiro Hori, Hirokazu Hayashi, Masako Fujiu-Kurachi, Takahiro Ono, Takanori Tsujimura, Jin Magara, Makoto Inoue
Surface electrical stimulation of the laryngeal region is used to improve swallowing in dysphagic patients. However, little is known about how electrical stimulation affects tongue movements and related functions. We investigated the effect of electrical stimulation on tongue pressure and hyoid movement, as well as supra- and infrahyoid muscle activity, in 18 healthy young participants. Electrical stimulation (0.2 ms duration, 80 Hz, 80% of each participant's maximal tolerance) of the laryngeal region was applied...
September 21, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28935232/utilising-physiological-principles-of-motor-unit-recruitment-to-reduce-fatigability-of-electrically-evoked-contractions-a-narrative-review
#3
Trevor S Barss, Emily N Ainsley, Francisca C Claveria-Gonzalez, M John Luu, Dylan J Miller, Matheus J Wiest, David F Collins
Neuromuscular electrical stimulation (NMES) is used to produce contractions to restore movement and reduce secondary complications for individuals experiencing motor impairment. NMES is conventionally delivered through a single pair of electrodes over a muscle belly or nerve trunk using short pulse durations and frequencies between 20-40 Hz (conventional NMES). Unfortunately, the benefits and widespread use of conventional NMES are limited by contraction fatigability, which is due in large part to the non-physiological way that contractions are generated...
September 18, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28931549/sacral-neuromodulation-blocks-pudendal-inhibition-of-reflex-bladder-activity-in-cats-insight-into-the-efficacy-of-sacral-neuromodulation-in-fowler-s-syndrome
#4
Xing Li, Jamie Uy, Michelle Yu, Shun Li, Katherine Theisen, Jeffrey Browning, Bing Shen, Jicheng Wang, James R Roppolo, William C de Groat, Changfeng Tai
This study tested the hypothesis that sacral neuromodulation, i.e. electrical stimulation of afferent axons in sacral spinal root, can block pudendal afferent inhibition of the micturition reflex. In α-chloralose anesthetized cats, pudendal nerve stimulation (PNS) at 3-5 Hz was used to inhibit bladder reflex activity while the sacral S1 or S2 dorsal root was stimulated at 15-30 Hz to mimic sacral neuromodulation and to block the bladder inhibition induced by PNS. The intensity threshold (T) for PNS or S1/S2 dorsal root stimulation (DRS) to induce muscle twitch of anal sphincter or toe was determined...
September 20, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28930862/an-innovative-ergometer-to-measure-neuromuscular-fatigue-immediately-after-cycling
#5
Douglas Doyle-Baker, John Temesi, Mary E Medysky, Robert J Holash, Guillaume Y Millet
PURPOSE: When assessing neuromuscular fatigue (NMF) from dynamic exercise using large muscle mass (e.g. cycling), most studies have delayed measurement for 1-3 min after task failure. This study aimed to determine the reliability of an innovative cycling ergometer permitting the start of fatigue measurement within 1 s after cycling. METHODS: Twelve subjects participated in two experimental sessions. Knee-extensor NMF was assessed by electrical nerve and transcranial magnetic stimulation with both a traditional chair set-up (PRE and POST-Chair, 2 min post-exercise) and the new cycling ergometer (PRE, every 3 min during incremental exercise and POST-Bike, at task failure)...
September 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28928706/early-stroke-rehabilitation-of-the-upper-limb-assisted-with-an-electromyography-driven-neuromuscular-electrical-stimulation-robotic-arm
#6
Qiuyang Qian, Xiaoling Hu, Qian Lai, Stephanie C Ng, Yongping Zheng, Waisang Poon
BACKGROUND: Effective poststroke motor rehabilitation depends on repeated limb practice with voluntary efforts. An electromyography (EMG)-driven neuromuscular electrical stimulation (NMES)-robot arm was designed for the multi-joint physical training on the elbow, the wrist, and the fingers. OBJECTIVES: To investigate the training effects of the device-assisted approach on subacute stroke patients and to compare the effects with those achieved by the traditional physical treatments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28921633/spontaneous-mechanical-and-electrical-activities-of-human-calf-musculature-at-rest-assessed-by-repetitive-single-shot-diffusion-weighted-mri-and-simultaneous-surface-electromyography
#7
Martin Schwartz, Günter Steidle, Petros Martirosian, Ander Ramos-Murguialday, Hubert Preißl, Alto Stemmer, Bin Yang, Fritz Schick
PURPOSE: Assessment of temporal and spatial relations between spontaneous mechanical activities in musculature (SMAM) at rest as revealed by diffusion-weighted imaging (DWI) and electrical muscular activities in surface EMG (sEMG). Potential influences of static and radiofrequency magnetic fields on muscular activity on sEMG measurements at rest were examined systematically. METHODS: Series of diffusion-weighted stimulated echo planar imaging were recorded with concurrent sEMG measurements...
September 17, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28918572/spot-light-on-skeletal-muscles-optogenetic-stimulation-to-understand-and-restore-skeletal-muscle-function
#8
Tobias van Bremen, Thorsten Send, Philipp Sasse, Tobias Bruegmann
Damage of peripheral nerves results in paralysis of skeletal muscle. Currently, the only treatment option to restore proper function is electrical stimulation of the innervating nerve or of the skeletal muscles directly. However this approach has low spatial and temporal precision leading to co-activation of antagonistic muscles and lacks cell-type selectivity resulting in pain or discomfort by stimulation of sensible nerves. In contrast to electrical stimulation, optogenetic methods enable spatially confined and cell-type selective stimulation of cells expressing the light sensitive channel Channelrhodopsin-2 with precise temporal control over the membrane potential...
September 16, 2017: Journal of Muscle Research and Cell Motility
https://www.readbyqxmd.com/read/28915703/treatments-of-traumatic-neuropathic-pain-a-systematic-review
#9
REVIEW
Chenglun Yao, Xijie Zhou, Bin Zhao, Chao Sun, Keshav Poonit, Hede Yan
Traumatic neuropathic pain caused by traumatic neuroma has long been bothering both doctors and patients, the mechanisms of traumatic neuropathic pain are widely discussed by researchers and the treatment is challenging. Clinical treatment of painful neuroma is unclear. Numerous treatment modalities have been introduced by experts in this field. However, there is still no single standard recognized treatment. Different forms of treatments have been tested in animals and humans, but pharmacotherapies (antidepressants, antiepileptics) remain the basis of traumatic neuropathic pain management...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28912689/monoamine-release-in-the-cat-lumbar-spinal-cord-during-fictive-locomotion-evoked-by-the-mesencephalic-locomotor-region
#10
Brian R Noga, Riza P Turkson, Songtao Xie, Annette Taberner, Alberto Pinzon, Ian D Hentall
Spinal cord neurons active during locomotion are innervated by descending axons that release the monoamines serotonin (5-HT) and norepinephrine (NE) and these neurons express monoaminergic receptor subtypes implicated in the control of locomotion. The timing, level and spinal locations of release of these two substances during centrally-generated locomotor activity should therefore be critical to this control. These variables were measured in real time by fast-cyclic voltammetry in the decerebrate cat's lumbar spinal cord during fictive locomotion, which was evoked by electrical stimulation of the mesencephalic locomotor region (MLR) and registered as integrated activity in bilateral peripheral nerves to hindlimb muscles...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/28906348/effect-of-anodal-transcranial-direct-current-stimulation-of-the-motor-cortex-on-elbow-flexor-muscle-strength-in-the-very-old
#11
Kentaro Oki, Leatha A Clark, Shinichi Amano, Brian C Clark
BACKGROUND AND PURPOSE: Muscle weakness predisposes older adults to a fourfold increase in functional limitations and has previously been associated with reduced motor cortex excitability in aging adults. The purpose of this study was to determine whether a single session of anodal transcranial direct current stimulation (tDCS) of the motor cortex would increase elbow flexion muscle strength and electromyographic (EMG) amplitude in very old individuals. METHODS: Eleven very old individuals-85...
September 12, 2017: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/28902817/-clinical-efficacy-of-electric-stimulation-of-crural-muscles-in-comprehensive-treatment-of-post-thrombotic-disease
#12
V V Ryzhkin, K V Lobastov, A V Vorontsova, I V Schastlivtsev, V E Barinov, E K Naumov, L A Laberko
The purpose of the study was to evaluate clinical efficacy of electromyostimulation (EMS) of the crural muscles as part of comprehensive therapy for post-thrombotic disease in patients with residual venous obstruction in the femoropopliteal segment. We carried out a prospective comparative clinical study enrolling patients having endured a fist episode of clinically unprovoked venous thrombosis of the femoropopliteal segment and completed the standard 6-month course of anticoagulant therapy and presenting with ultrasonographic signs of complete recanalization of the proximal venous segments (stenosis of 20% and more from the vessel's initial diameter), as well as scoring 5 points and more by the Villalta scale...
2017: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/28901954/avoiding-nerve-stimulation-in-irreversible-electroporation-a-numerical-modeling-study
#13
Borja Mercadal, Christopher B Arena, Rafael V Davalos, Antoni Ivorra
Electroporation based treatments consist in applying one or multiple high voltage pulses to the tissues to be treated. As an undesired side effect, these pulses cause electrical stimulation of excitable tissues such as nerves and muscles. This increases the complexity of the treatments and may pose a risk to the patient. To minimize electrical stimulation during electroporation based treatments, it has been proposed to replace the commonly used monopolar pulses by bursts of short bipolar pulses. In the present study, we have numerically analyzed the rationale for such approach...
September 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28900719/the-effects-of-exercise-induced-muscle-damage-on-critical-torque
#14
Marcin K Szczyglowski, Carl J Ade, Jason A Campbell, Christopher D Black
OBJECTIVE: Exercise-induced muscle damage (EIMD) has been shown to reduce endurance exercise performance. This study examined the effects of EIMD on critical torque (CT) and the sum of the torque integral above CT during (∫ T total) during a 5-min all-out, intermittent isometric knee extension exercise. METHODS: CT was determined in eight participants prior to and 48-h following EIMD. EIMD was induced using electrically stimulated eccentric knee extensions until maximal voluntary strength (MVC) was reduced by 40%...
September 12, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28894706/the-effectiveness-of-electrical-acupuncture-stimulation-in-reducing-levels-of-self-reported-anxiety-of-lung-cancer-patients-during-palliative-care-a-pilot-study
#15
Yin-Qing Hu, Yi-Fan Wu, Li-Li Hou
BACKGROUND: Lung cancer is a serious threat to human health and life worldwide. Anxiety is common amongst palliative care patients with lung cancer and adversely affects quality of life. Acupuncture is an effective and safe treatment method used for the treatment of depressive mood status. We aimed to assess the influence of electrical acupuncture stimulation on self-reported anxiety in palliative care among patients with lung cancer. METHODS: This pilot study had an experimental, 3-group, research plan...
August 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28887545/human-to-human-closed-loop-control-based-on-brain-to-brain-interface-and-muscle-to-muscle-interface
#16
M Ebrahim M Mashat, Guangye Li, Dingguo Zhang
Novel communication techniques have always been fascinating for humankind. This pilot study presents an approach to human interaction by combining direct brain-to-brain interface (BBI) and muscle-to-muscle interface (MMI) in a closed-loop pattern. In this system, artificial paths (data flows) functionally connect natural paths (nerves). The intention from one subject (sender) is recognized using electroencephalography (EEG) based brain-computer interface (BCI), which is sent out to trigger transcranial magnetic stimulation (TMS) on the other subject (receiver) and induce hand motion; meanwhile TMS results in a significant change on the motor evoked potentials (MEP) recorded by electromyography (EMG) of the receiver's arm, which triggers functional electrical stimulation (FES) applied to the sender's arm and generates hand motion...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28885155/a-nonlinear-dynamics-based-estimator-for-functional-electrical-stimulation-preliminary-results-from-lower-leg-extension-experiments
#17
Marcus Allen, Qiang Zhong, Nicholas Kirsch, Ashwin Dani, William W Clark, Nitin Sharma
Miniature inertial measurement units (IMUs) are wearable sensors that measure limb segment or joint angles during dynamic movements. However, IMUs are generally prone to drift, external magnetic interference, and measurement noise. This paper presents a new class of nonlinear state estimation technique called state-dependent coefficient (SDC) estimation to accurately predict joint angles from IMU measurements. The SDC estimation method uses limb dynamics, instead of limb kinematics, to estimate the limb state...
September 7, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28883745/review-of-devices-used-in-neuromuscular-electrical-stimulation-for-stroke-rehabilitation
#18
REVIEW
Kotaro Takeda, Genichi Tanino, Hiroyuki Miyasaka
Neuromuscular electrical stimulation (NMES), specifically functional electrical stimulation (FES) that compensates for voluntary motion, and therapeutic electrical stimulation (TES) aimed at muscle strengthening and recovery from paralysis are widely used in stroke rehabilitation. The electrical stimulation of muscle contraction should be synchronized with intended motion to restore paralysis. Therefore, NMES devices, which monitor electromyogram (EMG) or electroencephalogram (EEG) changes with motor intention and use them as a trigger, have been developed...
2017: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/28881588/experimental-study-of-brachial-plexus-and-vessel-compression-evaluation-of-combined-central-and-peripheral-electrodiagnostic-approach
#19
Chaoqun Yang, Jianguang Xu, Jie Chen, Shulin Li, Yu Cao, Yi Zhu, Lei Xu
INTRODUCTION: We sought to investigate the reliability of a new electrodiagnostic method for identifying Electrodiagnosis of Brachial Plexus & Vessel Compression Syndrome (BPVCS) in rats that involves the application of transcranial electrical stimulation motor evoked potentials (TES-MEPs) combined with peripheral nerve stimulation compound muscle action potentials (PNS-CMAPs). RESULTS: The latencies of the TES-MEP and PNS-CMAP were initially elongated in the 8-week group...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28875558/spinal-cord-stimulator-explantation-motives-for-removal-of-surgically-placed-paddle-systems
#20
Derrick A Dupré, Nestor Tomycz, Donald Whiting, Michael Oh
BACKGROUND: Despite requiring successful trials prior to implantation, spinal cord stimulation (SCS) systems for pain are often later removed. Removing surgically implanted hardware subjects patients to the risks and discomfort of a second surgery, threatens the cost-effectiveness of SCS, and limits the perceived durability of SCS technology for pain problems. OBJECTIVE: To investigate patterns of reasons given among patients who underwent SCS explant surgery (SCSES)...
September 5, 2017: Pain Practice: the Official Journal of World Institute of Pain
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