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Functional electrical stimulation

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https://www.readbyqxmd.com/read/28820903/prominent-facilitation-at-beta-and-gamma-frequency-range-revealed-with-physiological-calcium-concentration-in-adult-mouse-piriform-cortex-in-vitro
#1
Marie Gleizes, Simon P Perrier, Caroline Fonta, Lionel G Nowak
Neuronal activity is characterized by a diversity of oscillatory phenomena that are associated with multiple behavioral and cognitive processes, yet the functional consequences of these oscillations are not fully understood. Our aim was to determine whether and how these different oscillatory activities affect short-term synaptic plasticity (STP), using the olfactory system as a model. In response to odorant stimuli, the olfactory bulb displays a slow breathing rhythm as well as beta and gamma oscillations...
2017: PloS One
https://www.readbyqxmd.com/read/28819679/neuromuscular-electrical-stimulation-is-effective-in-strengthening-the-quadriceps-muscle-after-anterior-cruciate-ligament-surgery
#2
REVIEW
Annette V Hauger, M P Reiman, J M Bjordal, C Sheets, L Ledbetter, A P Goode
PURPOSE: Reduced ability to contract the quadriceps muscles is often found immediately following anterior cruciate ligament (ACL) surgery. This can lead to muscle atrophy and decreased function. Application of neuromuscular electrical stimulation (NMES) may be a useful adjunct intervention to ameliorate these deficits following ACL surgery. The purpose of this review was to determine whether NMES in addition to standard physical therapy is superior to standard physical therapy alone in improving quadriceps strength or physical function following ACL surgery...
August 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28819130/a-multielectrode-array-microchannel-platform-reveals-both-transient-and-slow-changes-in-axonal-conduction-velocity
#3
Rouhollah Habibey, Shahrzad Latifi, Hossein Mousavi, Mattia Pesce, Elmira Arab-Tehrany, Axel Blau
Due to their small dimensions, electrophysiology on thin and intricate axonal branches in support of understanding their role in normal and diseased brain function poses experimental challenges. To reduce experimental complexity, we coupled microelectrode arrays (MEAs) to bi-level microchannel devices for the long-term in vitro tracking of axonal morphology and activity with high spatiotemporal resolution. Our model allowed the long-term multisite recording from pure axonal branches in a microscopy-compatible environment...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818455/adipose-derived-stromal-cells-enhance-auditory-neuron-survival-in-an-animal-model-of-sensory-hearing-loss
#4
Philipp Schendzielorz, Maike Vollmer, Kristen Rak, Armin Wiegner, Nashwa Nada, Katrin Radeloff, Rudolf Hagen, Andreas Radeloff
BACKGROUND: A cochlear implant (CI) is an electronic prosthesis that can partially restore speech perception capabilities. Optimum information transfer from the cochlea to the central auditory system requires a proper functioning auditory nerve (AN) that is electrically stimulated by the device. In deafness, the lack of neurotrophic support, normally provided by the sensory cells of the inner ear, however, leads to gradual degeneration of auditory neurons with undesirable consequences for CI performance...
August 14, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28818208/catecholamine-dependent-%C3%AE-adrenergic-signaling-in-a-pluripotent-stem-cell-model%C3%A2-of-takotsubo-cardiomyopathy
#5
Thomas Borchert, Daniela Hübscher, Celina I Guessoum, Tuan-Dinh D Lam, Jelena R Ghadri, Isabel N Schellinger, Malte Tiburcy, Norman Y Liaw, Yun Li, Jan Haas, Samuel Sossalla, Mia A Huber, Lukas Cyganek, Claudius Jacobshagen, Ralf Dressel, Uwe Raaz, Viacheslav O Nikolaev, Kaomei Guan, Holger Thiele, Benjamin Meder, Bernd Wollnik, Wolfram-Hubertus Zimmermann, Thomas F Lüscher, Gerd Hasenfuss, Christian Templin, Katrin Streckfuss-Bömeke
BACKGROUND: Takotsubo syndrome (TTS) is characterized by an acute left ventricular dysfunction and is associated with life-threating complications in the acute phase. The underlying disease mechanism in TTS is still unknown. A genetic basis has been suggested to be involved in the pathogenesis. OBJECTIVES: The aims of the study were to establish an in vitro induced pluripotent stem cell (iPSC) model of TTS, to test the hypothesis of altered β-adrenergic signaling in TTS iPSC-cardiomyocytes (CMs), and to explore whether genetic susceptibility underlies the pathophysiology of TTS...
August 22, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28817978/transcutaneous-electrical-nerve-stimulation-tens-as-an-adjunct-for-pain-management-in-perioperative-settings-a-critical-review
#6
Mark I Johnson
Surgical procedures are ever more complex. Day-case surgical loads are increasing and the length of hospital stays are reducing. Management of pain in perioperative settings remains a challenge. Expert panels recommend a multimodal approach which is often interpreted by medical practitioners as polypharmacy. There is variability in non-pharmacological interventions offered to patients, although transcutaneous electrical nerve stimulation (TENS) has been used since the 1970s. Recommendations from expert panels are inconsistent about the use of TENS in perioperative pain settings...
August 18, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28816177/electrical-stimulation-of-gut-motility-guided-by-an-in-silico-model
#7
Bradley Brigham Barth, Craig S Henriquez, Warren M Grill, Xiling Shen
OBJECTIVE: Neuromodulation of the central and peripheral nervous systems is becoming increasingly important for treating a diverse set of diseases-ranging from Parkinson's Disease and epilepsy to chronic pain. However, neuromodulation of the gastrointestinal (GI) tract has achieved relatively limited success in treating functional GI disorders, which affect a significant population, because the effects of stimulation on the enteric nervous system (ENS) and gut motility are not well understood...
August 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28815971/topographical-and-electrical-stimulation-of-neuronal-cells-through-microwrinkled-conducting-polymer-biointerfaces
#8
Alberto Bonisoli, Attilio Marino, Gianni Ciofani, Francesco Greco
The development of smart biointerfaces combining multiple functions is crucial for triggering a variety of cellular responses. In this work, wrinkled organic interfaces based on the conducting polymer poly(3,4-ethylene dioxythiophene) doped with poly(styrene sulfonate) are developed with the aim to simultaneously convey electrical and topographical stimuli to cultured cells. The surface wrinkling of thin films on heat-shrink polymer sheets allows for rapid patterning of self-assembled anisotropic topographies characterized by micro/sub-microscale aligned wrinkles...
August 16, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28815571/functional-electrical-stimulation-of-the-ankle-dorsiflexors-during-walking-in-spastic-cerebral-palsy-a-systematic-review
#9
REVIEW
Irene Moll, Johannes S H Vles, Dan L H M Soudant, Adhiambo M A Witlox, Heleen M Staal, Lucianne A W M Speth, Yvonne J M Janssen-Potten, Marcel Coenen, Suzanne M Koudijs, R Jeroen Vermeulen
AIM: To assess the effect of functional electrical stimulation (FES) of ankle dorsiflexors in children and adolescents with spastic cerebral palsy (CP) during walking. METHOD: A systematic review was performed using the American Academy of Cerebral Palsy and Developmental Medicine methodology and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Six databases were searched for studies applying interventions to patients aged younger than 20 years...
August 17, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28814663/parasympathetic-dysfunction-and-antiarrhythmic-effect-of-vagal-nerve-stimulation-following-myocardial-infarction
#10
Marmar Vaseghi, Siamak Salavatian, Pradeep S Rajendran, Daigo Yagishita, William R Woodward, David Hamon, Kentaro Yamakawa, Tadanobu Irie, Beth A Habecker, Kalyanam Shivkumar
Myocardial infarction causes sympathetic activation and parasympathetic dysfunction, which increase risk of sudden death due to ventricular arrhythmias. Mechanisms underlying parasympathetic dysfunction are unclear. The aim of this study was to delineate consequences of myocardial infarction on parasympathetic myocardial neurotransmitter levels and the function of parasympathetic cardiac ganglia neurons, and to assess electrophysiological effects of vagal nerve stimulation on ventricular arrhythmias in a chronic porcine infarct model...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28814499/therapeutic-stimulation-for-restoration-of-function-after-spinal-cord-injury
#11
REVIEW
Aiva Ievins, Chet T Moritz
Paralysis due to spinal cord injury can severely limit motor function and independence. This review summarizes different approaches to electrical stimulation of the spinal cord designed to restore motor function, with a brief discussion of their origins and the current understanding of their mechanisms of action. Spinal stimulation leads to impressive improvements in motor function along with some benefits to autonomic functions such as bladder control. Nonetheless, the precise mechanisms underlying these improvements and the optimal spinal stimulation approaches for restoration of motor function are largely unknown...
September 2017: Physiology
https://www.readbyqxmd.com/read/28814058/towards-an-ankle-neuroprosthesis-for-hybrid-robotics-concepts-and-current-sources-for-functional-electrical-stimulation
#12
S Casco, I Fuster, R Galeano, J C Moreno, J L Pons, F Brunetti
Hybrid rehabilitation robotics combine neuro-prosthetic devices (close-loop functional electrical stimulation systems) and traditional robotic structures and actuators to explore better therapies and promote a more efficient motor function recovery or compensation. Although hybrid robotics and ankle neuroprostheses (NPs) have been widely developed over the last years, there are just few studies on the use of NPs to electrically control both ankle flexion and extension to promote ankle recovery and improved gait patterns in paretic limbs...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814024/feedback-control-of-functional-electrical-stimulation-for-arbitrary-upper-extremity-movements
#13
Reza Sharif Razavian, Borna Ghannadi, John McPhee
Functional electrical stimulation (FES) is a type of neuroprosthesis in which muscles are stimulated by electrical pulses in order to compensate for the loss of voluntary movement control. Modulating the stimulation intensities to reliably generate movements is a challenging control problem. For the first time, this paper presents a feedback controller for FES to control arm movements in a 2D (table-top) task space. This feedback controller is based on a recent human motor control model, which uses muscle synergies to simplify the calculations and improve control performance...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28814013/a-third-arm-design-of-a-bypass-prosthesis-enabling-incorporation
#14
Adam W Wilson, Daniel H Blustein, Jon W Sensinger
A variety of factors affect the performance of a person using a myoelectric prosthesis, including increased control noise, reduced sensory feedback, and muscle fatigue. Many studies use able-bodied subjects to control a myoelectric prosthesis using a bypass socket in order to make comparisons to movements made with intact limbs. Depending on the goals of the study, this approach can also allow for greater subject numbers and more statistical power in the analysis of the results. As we develop assessment tools and techniques to evaluate how peripheral nerve interfaces impact prosthesis incorporation, involving normally limbed subjects in the studies becomes challenging...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813918/how-to-prepare-a-person-with-complete-spinal-cord-injury-to-use-surface-electrodes-for-fes-trike-cycling
#15
Raymond K Y Tong, Xiaojun Wang, Kenry W C Leung, Ginny T Y Lee, Cathy C Y Lau, H W Wai, Peter M K Pang, H C Leung
Functional Electrical Stimulation (FES) cycling could benefit people with Spinal Cord Injury (SCI). The FES cycling involves large muscle groups during the training, and thus improves the cardiovascular function, increases the muscle bulk and reduces the secondary complications. This study developed an outdoor FES exercise cycling system for complete SCI persons to exercise their lower limbs without putting extra load on upper extremities. The mechanical structure of the cycling system was specially redesigned to secure the SCI persons in the cycling system...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813916/evaluating-an-open-loop-functional-electrical-stimulation-controller-for-holding-the-shoulder-and-elbow-configuration-of-a-paralyzed-arm
#16
Derek N Wolf, Eric M Schearer
Functional electrical stimulation (FES) is a promising solution for restoring functional motion to individuals with paralysis, but the potential for achieving full-arm reaching motions with FES for various desired tasks has not been realized. We present an open-loop controller capable of calculating and applying the necessary muscle stimulations to hold the wrist of an individual with high tetraplegia at any desired position. We used the controller to hold the wrist at a series of static positions. The controller was capable of discriminating between different wrist positions...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813849/effects-of-partial-body-weight-support-and-functional-electrical-stimulation-on-gait-characteristics-during-treadmill-locomotion-pros-and-cons-of-saddle-seat-type-body-weight-support
#17
Natsumi Kataoka, Hiroaki Hirai, Taya Hamilton, Fumiaki Yoshikawa, Akira Kuroiwa, Yuma Nagakawa, Eichi Watanabe, Yudai Ninomaru, Yuri Saeki, Mitsunori Uemura, Fumio Miyazaki, Hiroshi Nakata, Tomoki Nishi, Hiroaki Naritomi, Hermano Igo Krebs
Robotic therapy for rehabilitation of the lower extremity is currently in its early stage of development. Aiming at exploring an efficacious intervention for gait rehabilitation, we investigate the characteristics of an end-effector gait-training device that combines saddle-seat-type body-weight-supported treadmill training with functional electrical stimulation (FES). This is a task-oriented approach to restoring voluntary control of locomotion in patients with neuromuscular diseases. We evaluate the differences between walking with saddle-seat-type support and with harness-type support, in terms of personal preference, the preferred walking speed, profiles of kinematics and ground reaction force, and the effectiveness of FES...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813833/an-integrated-gait-rehabilitation-training-based-on-functional-electrical-stimulation-cycling-and-overground-robotic-exoskeleton-in-complete-spinal-cord-injury-patients-preliminary-results
#18
S Mazzoleni, E Battini, A Rustici, G Stampacchia
The aim of this study is to investigate the effects of an integrated gait rehabilitation training based on Functional Electrical Stimulation (FES)-cycling and overground robotic exoskeleton in a group of seven complete spinal cord injury patients on spasticity and patient-robot interaction. They underwent a robot-assisted rehabilitation training based on two phases: n=20 sessions of FES-cycling followed by n= 20 sessions of robot-assisted gait training based on an overground robotic exoskeleton. The following clinical outcome measures were used: Modified Ashworth Scale (MAS), Numerical Rating Scale (NRS) on spasticity, Penn Spasm Frequency Scale (PSFS), Spinal Cord Independence Measure Scale (SCIM), NRS on pain and International Spinal Cord Injury Pain Data Set (ISCI)...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813793/the-combined-action-of-a-passive-exoskeleton-and-an-emg-controlled-neuroprosthesis-for-upper-limb-stroke-rehabilitation-first-results-of-the-retrainer-project
#19
E Ambrosini, S Ferrante, J Zajc, M Bulgheroni, W Baccinelli, E d'Amico, T Schauer, C Wiesener, M Russold, M Gfoehler, M Puchinger, M Weber, S Becker, K Krakow, M Rossini, D Proserpio, G Gasperini, F Molteni, G Ferrigno, A Pedrocchi
The combined use of Functional Electrical Stimulation (FES) and robotic technologies is advocated to improve rehabilitation outcomes after stroke. This work describes an arm rehabilitation system developed within the European project RETRAINER. The system consists of a passive 4-degrees-of-freedom exoskeleton equipped with springs to provide gravity compensation and electromagnetic brakes to hold target positions. FES is integrated in the system to provide additional support to the most impaired muscles. FES is triggered based on the volitional EMG signal of the same stimulated muscle; in order to encourage the active involvement of the patient the volitional EMG is also monitored throughout the task execution and based on it a happy or sad emoji is visualized at the end of each task...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813790/position-and-torque-control-via-rehabilitation-robot-and-functional-electrical-stimulation
#20
Christian A Cousin, Courtney A Rouse, Victor H Duenas, Warren E Dixon
Two common rehabilitation therapies for individuals possessing neurological conditions are functional electrical stimulation (FES) and robotic assistance. This paper focuses on combining the two rehabilitation strategies for use on the biceps brachii muscle group. FES is used to elicit muscle contractions to actuate the forearm and a rehabilitation robot is used to challenge the muscle group in its efforts. Two controllers were developed and implemented to accomplish the multifaceted objective, both of which achieve global exponential stability for position and torque tracking as proven through a Lyapunov stability analysis...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
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