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https://www.readbyqxmd.com/read/28339404/the-influence-of-task-related-training-combined-with-transcutaneous-electrical-nerve-stimulation-on-paretic-upper-limb-muscle-activation-in-patients-with-chronic-stroke
#1
Kyoungsim Jung, Jinhwa Jung, Taesung In, Taehoon Kim, Hwi-Young Cho
OBJECTIVES: This study investigated the efficacy of Task-Related Training (TRT) Combined with Transcutaneous Electrical Nerve Stimulation (TENS) on the improvement of upper limb muscle activation in chronic stroke survivors with mild or moderate paresis. METHODS: A single-blind, randomized clinical trial was conducted with 46stroke survivors with chronic paresis. They were randomly allocated two groups: the TRT+TENS group (n = 23) and the TRT+ placebo TENS (TRT+PLBO) group (n = 23)...
March 23, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28326007/evaluation-of-the-cortical-silent-period-of-the-laryngeal-motor-cortex-in-healthy-individuals
#2
Mo Chen, Rebekah L S Summers, George S Goding, Sharyl Samargia, Christy L Ludlow, Cecília N Prudente, Teresa J Kimberley
Objective: This work aimed to evaluate the cortical silent period (cSP) of the laryngeal motor cortex (LMC) using the bilateral thyroarytenoid (TA) muscles with transcranial magnetic stimulation (TMS). Methods: In 11 healthy participants, fine-wire electromyography (EMG) was used to record bilateral TA muscle responses to single pulse TMS delivered to the LMC in both hemispheres. Peripheral responses to stimulation over the mastoid, where the vagus nerve exits the skull, were collected to verify the central origin of the cortical stimulation responses by comparing the latencies...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28318780/surface-electromyogram-and-muscle-ultrasonography-for-detection-of-muscle-fasciculations-in-pediatric-peripheral-neuropathy
#3
Masayoshi Oguri, Yoshiaki Saito, Tetsuya Okazaki, Wataru Matsumura, Koyo Ohno, Masami Togawa, Chisako Fukuda, Yuko Saito, Ichizo Nishino, Yoshihiro Maegaki
A 12-year-old girl presented with talipes equinus of both legs, attenuation of upper and lower limb tendon reflexes, thermal hyperalgesia, and reduction of vibratory sensation. On clinical examination, muscle twitches of fingers of both hands, as well as the abductor halluces and the dorsal interossei muscles of the right foot were observed. Nerve conduction velocity was significantly declined in the upper and lower extremities. Needle electromyography (EMG) was not performed; however, ultrasonography revealed repetitive, semi-regular muscle twitches lasting 0...
March 16, 2017: Brain & Development
https://www.readbyqxmd.com/read/28303472/chronic-exertional-compartment-syndrome-in-the-forearm-of-a-collegiate-softball-pitcher
#4
REVIEW
Austin Cole, John L Hiatt, Christopher Arnold, Terry Sites, Ramon Ylanon
BACKGROUND: Chronic exertional compartment syndrome (CECS) is a recognized condition in the lower limb, with many reports in the literature. However, very few instances include CECS of the upper limb. This article presents the case of a collegiate softball pitcher presenting with CECS in her right forearm. To our knowledge, this is the first case report of a softball player with CECS, with only one similar incident in a major league baseball player. PURPOSE: The rarity of this condition normally places it low on the differential diagnosis...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28273554/head-drop-after-botox-electrodiagnostic-evaluation-of-iatrogenic-botulinum-toxicity
#5
Eliza Szuch, James B Caress, Bandhu Paudyal, Allison Brashear, Michael S Cartwright, Roy E Strowd
BACKGROUND: Botulinum is a potent neurotoxin with increasing indications for neurologic disorders. While clinical benefit manifests primarily due to local actions at the neuromuscular junction, regional and systemic effects do occur. Rarely, systemic symptoms including weakness, dysarthria, dysphagia and other side effects occur as a result of iatrogenic botulinum neurotoxicity. CASE: A 72 year-old female with right leg dystonia developed head drop, bulbar and systemic weakness following right lower extremity botulinum toxin injection...
March 5, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28271169/-intraoperative-monitoring-of-the-facial-nerve-vestibular-schwannoma-surgery
#6
J Prell, C Strauss, S K Plontke, S Rampp
BACKGROUND: In vestibular schwannoma surgery, facial nerve injury with consecutive functional impairment is one of the most important complications. Intraoperative monitoring of facial nerve function has been developed in order to avoid this complication. OBJECTIVE: Which methods for intraoperative monitoring have been developed? Which methods are in use today and what can they achieve in modern vestibular schwannoma surgery? MATERIAL AND METHODS: This article provides an evaluation and summary of the literature, as well as a discussion of the methods and their ability to achieve the goals of intraoperative monitoring...
March 7, 2017: HNO
https://www.readbyqxmd.com/read/28269264/effects-of-the-choice-of-reference-on-the-selectivity-of-a-multi-contact-nerve-cuff-electrode
#7
Ryan G L Koh, Jose Zariffa
Tripolar referencing is typically used in nerve cuff electrode recordings due to its ability to maximize the signal-to-noise ratio of contacts at the centre, but this may not be the optimal choice for a multi-contact nerve cuff consisting of contacts in off-centre rings. We conducted a simulation study to compare the effects of 3 different reference types on the recording selectivity of a multi-contact nerve cuff: the tripolar reference (TPR), common average reference (CAR), and multiple tripolar references based on consecutive groups of 3 rings (cTPR)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269038/linear-methods-for-reducing-emg-contamination-in-peripheral-nerve-motor-decodes
#8
Zachary B Kagan, Suzanne Wendelken, David M Page, Tyler Davis, Douglas T Hutchinson, Gregory A Clark, David J Warren
Signals recorded from the peripheral nervous system (PNS) with high channel count penetrating microelectrode arrays, such as the Utah Slanted Electrode Array (USEA), often have electromyographic (EMG) signals contaminating the neural signal. This common-mode signal source may prevent single neural units from successfully being detected, thus hindering motor decode algorithms. Reducing this EMG contamination may lead to more accurate motor decode performance. A virtual reference (VR), created by a weighted linear combination of signals from a subset of all available channels, can be used to reduce this EMG contamination...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268673/development-of-a-closed-loop-system-for-tremor-suppression-in-patients-with-parkinson-s-disease
#9
F L Xu, M Z Hao, S Q Xu, Z X Hu, Q Xiao, N Lan
More than 70% of patients suffering Parkinson's disease (PD) exhibit resting tremor in their extremities, hampering their ability to perform daily activities. Based on our earlier studies on corticospinal transmission of tremor signals [10,11], we hypothesize that cutaneous afferents evoked by surface stimulation can produce an inhibitory effect on propriospinal neurons (PN), which in turn will suppress tremor signals passing through the PN. This paper presents the development of a closed-loop system for tremor suppression by transcutaneous electrical nerve stimulation (TENS) of sensory fibers beneath the skin...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268294/spatial-characterization-of-innervation-zones-under-electrically-elicited-m-wave
#10
C Zhang, Y Peng, S Li, P Zhou, A Munoz, D Tang, Y Zhang
The three dimensional (3D) innervation zone (IZ) imaging approach (3DIZI) has been developed in our group to localize the IZ of a particular motor unit (MU) from its motor unit action potentials decomposed from high-density surface electromyography (EMG) recordings. In this study, the developed 3DIZI approach was combined with electrical stimulation to investigate global distributions of IZs in muscles from electrically elicited M-wave recordings. Electrical stimulations were applied to the musculocutaneous nerve to activate supramaximal muscle response of the biceps brachii in one healthy subject, and high-density (128 channels) surface EMG signals of the biceps brachii muscles were recorded...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28264243/lumbar-disc-herniation-presented-with-contralateral-symptoms
#11
Pius Kim, Chang Il Ju, Hyeun Sung Kim, Seok Won Kim
OBJECTIVE: This study aimed to unravel the putative mechanism underlying the neurologic deficits contralateral to the side with lumbar disc herniation (LDH) and to elucidate the treatment for this condition. METHODS: From January 2009 to June 2015, 8 patients with LDH with predominantly contralateral neurologic deficits underwent surgical treatment on the side with LDH with or without decompressing the symptomatic side. A retrospective review of charts and radiological records of these 8 patients was performed...
March 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28258435/convergence-of-ipsi-and-contralateral-muscle-afferents-on-common-interneurons-mediating-reciprocal-inhibition-of-ankle-plantarflexors-in-humans
#12
Natalie Mrachacz-Kersting, S S Geertsen, A J T Stevenson, J B Nielsen
Recent studies have shown that afferents arising from muscle receptors located on one side can affect the activity of muscles on the contralateral side. In animal preparations, evidence supports that afferent pathways originating from one limb converge onto interneurons mediating disynaptic reciprocal Ia inhibition of the opposite limb. This study was designed to investigate whether this pathway is similar in humans to that described in animals. Thirteen healthy volunteers participated in one of two experiments...
March 3, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28254601/electromyographically-guided-nerve-combing-makes-microvascular-decompression-more-successful-in-hemifacial-spasm-with-persistent-abnormal-muscle-response
#13
Xin Zhang, Jin Zhu, Yin-Da Tang, Hua Zhao, Ting-Ting Ying, Yan Yuan, Shi-Ting Li
BACKGROUND: Microvascular decompression (MVD) of the facial nerve monitored intra-operatively by abnormal muscle response (AMR) activity is a common treatment for hemifacial spasm. However, AMR frequently persists after MVD, for which electromyographically (EMG)-guided nerve combing is sometimes recommended. Because no research regarding the success of EMG-guided nerve combing has been published, we compared the effectiveness of nerve combing after MVD with simple MVD in cases including persistent AMR...
February 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28250155/reflex-wind-up-in-early-chronic-spinal-injury-plasticity-of-motor-outputs
#14
Michael D Johnson, Alain Frigon, Marie-France Hurteau, Charlette Cain, Charles J Heckman
In this study we evaluate temporal summation (wind-up) of reflexes in select distal and proximal hindlimb muscles in response to repeated stimuli of the distal tibial or superficial peroneal nerves in cats 1 month following complete spinal transection. This report is a continuation of our companion paper on reflex wind-up in the intact and acutely spinalized cat. To evaluate reflex wind-up in both studies we recorded EMG signals from the following left hindlimb muscles: lateral gastrocnemius (LG), tibialis anterior (TA), semitendinosus (ST) and sartorius (Srt) in response to 10 electrical pulses to the tibial or superficial peroneal nerves...
March 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28249248/neuroprotective-effects-of-octreotide-on-diabetic-neuropathy-in-rats
#15
Volkan Solmaz, Bilge Piri Çınar, Gürkan Yiğittürk, Hatice Köse Özlece, Hüseyin Avni Eroglu, Aslan Tekatas, Oytun Erbaş, Dilek Taşkıran
The purpose of the present study is to investigate the possible healing effects of octreotide (OCT) on motor performance, electrophysiological and histopathological findings of diabetic neuropathy in a rat model of diabetes mellitus (DM). To induce diabetes, rats were administered a single dose (60mg/kg) of streptozotocin (STZ). Diabetic rats were treated either with saline (1ml/kg/day, n=7) or OCT (0.1mg/kg/day, n=7) for four weeks. Seven rats served as control group and received no treatment. At the end of the study, electromyography (EMG), gross motor function (inclined plate test), general histology and the perineural thickness of sciatic nerve were evaluated...
February 26, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28245074/percutaneous-probe-stimulation-for-intraoperative-neuromonitoring-in-total-endoscopic-thyroidectomy-a-preliminary-experience
#16
Daqi Zhang, Fang Li, Che-Wei Wu, Xiaoli Liu, Jingwei Xin, Feng-Yu Chiang, Hui Sun
BACKGROUND: The purpose of this study was to investigate the feasibility and value of using intraoperative neuromonitoring (IONM) performed via percutaneous probe stimulation during total endoscopic thyroidectomy. METHODS: This study prospectively enrolled a series of 132 consecutive patients with 156 recurrent laryngeal nerves (RLNs) at risk who received total endoscopic thyroidectomy performed via bilateral breast approach using standardized IONM. The stimulation probe was introduced into the working space by percutaneous puncture...
February 28, 2017: Head & Neck
https://www.readbyqxmd.com/read/28244163/chemogenetic-enhancement-of-functional-recovery-after-a-sciatic-nerve-injury
#17
Poonam B Jaiswal, Arthur W English
Designer receptors exclusively activated by designer drugs (DREADDs) are chemogenetic tools used to modulate neuronal excitability. We hypothesized that activation of excitatory (Gq) DREADD by its designer ligand, clozapine-N-oxide (CNO), would increase the excitability of neurons whose axons have been transected following peripheral nerve injury, and that this increase will lead to an enhanced functional recovery. The lateral gastrocnemius (LG) muscle of adult female Lewis rats was injected unilaterally with AAV9- hsyn- hM3Dq-mCherry (7...
February 28, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/28238585/recovery-from-rocuronium-induced-neuromuscular-block-was-longer-in-the-larynx-than-in-the-pelvic-limb-of-anesthetized-dogs
#18
Daniel M Sakai, Manuel Martin-Flores, Marta Romano, Chia T Tseng, Luis Campoy, Robin D Gleed, Jonathan Cheetham
OBJECTIVE: To determine if neuromuscular monitoring at the pelvic limb accurately reflects neuromuscular function in the larynx after administration of rocuronium in anesthetized dogs. STUDY DESIGN: Prospective experimental study. ANIMALS: Six healthy Beagle dogs. METHODS: Anesthesia was maintained in dogs with isoflurane and a continuous infusion of dexmedetomidine. Rocuronium (0.6 mg kg(-1)) was administered intravenously to induce neuromuscular block...
January 7, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28235530/intraoperative-aberrant-bispectral-index-values-due-to-facial-nerve-monitoring
#19
Dhritiman Chakrabarti, Rohini Mrugank Surve, Deepti Bs, Dheeraj Masapu
Bispectral index is an accepted depth of anaesthesia monitor for guiding intraoperative hypnotic agent administration. Frontalis EMG displayed on BIS monitor may increase due to twitching of frontalis muscle. EMG increases are also known to cause artefactual increases in BIS values. We report a case of artefactual increase of EMG and subsequently BIS values, due to electrical artefact from cranial nerve stimulator being used to identify the facial nerve. An explanation of the effect of stimulator signal on BIS EMG and BIS values has been provided...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28227498/effects-of-the-choice-of-reference-on-the-selectivity-of-a-multi-contact-nerve-cuff-electrode
#20
Ryan G L Koh, Jose Zariffa, Ryan G L Koh, Jose Zariffa, Jose Zariffa, Ryan G L Koh
Tripolar referencing is typically used in nerve cuff electrode recordings due to its ability to maximize the signal-to-noise ratio of contacts at the centre, but this may not be the optimal choice for a multi-contact nerve cuff consisting of contacts in off-centre rings. We conducted a simulation study to compare the effects of 3 different reference types on the recording selectivity of a multi-contact nerve cuff: the tripolar reference (TPR), common average reference (CAR), and multiple tripolar references based on consecutive groups of 3 rings (cTPR)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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