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https://www.readbyqxmd.com/read/27895572/plastic-changes-in-human-motor-cortical-output-induced-by-random-but-not-closed-loop-peripheral-stimulation-the-curse-of-causality
#1
Kenneth I Brown, Elizabeth R Williams, Felipe de Carvalho, Stuart N Baker
Previous work showed that repetitive peripheral nerve stimulation can induce plastic changes in motor cortical output. Triggering electrical stimulation of central structures from natural activity can also generate plasticity. In this study, we tested whether triggering peripheral nerve stimulation from muscle activity would likewise induce changes in motor output. We developed a wearable electronic device capable of recording electromyogram (EMG) and delivering electrical stimulation under closed-loop control...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27894853/concurrent-carpal-tunnel-syndrome-and-pronator-syndrome-a-retrospective-study-of-21-cases
#2
Chih-Wei Hsiao, Jui-Tein Shih, Sheng-Tsai Hung
PURPOSE: Concurrent carpal tunnel syndrome and pronator syndrome are rarely considered and the proximal compression sites are easily overlooked. We retrospectively studied 21 concurrent cases in our series from 2009 to 2015 and report the results. PATIENTS AND METHODS: The typical symptoms were pain, tingling, and numbness of the radial 3½ digits. If paresthesia involved the thenar eminence and proximal forearm pain was noted in cases of carpal tunnel syndrome, carpal tunnel syndrome combined with pronator syndrome was considered...
November 25, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27881053/oxytocin-provides-protection-against-diabetic-polyneuropathy-in-rats
#3
Oytun Erbas, Dilek Taşkıran, Fatih Oltulu, Altuğ Yavaşoğlu, Saylav Bora, Okan Bilge, Bilge Piri Çınar, Gönül Peker
PURPOSE: The aim of the present study is to investigate the protective effects of oxytocin (OT) on diabetic neuropathy (DNP) in rats. MATERIALS AND METHODS: Eighteen rats were used to induce diabetes using single dose streptozotocin (STZ, 60 mg/kg). Diabetic DNP was verified by electromyography (EMG) and motor function test on 21st day following STZ injection. Six rats served as naïve control group and received no drug (n = 6). Following EMG, diabetic rats were randomly divided into three groups and administered with either 1 ml/kg saline or 80 μg/kg OT or 160 μg/kg OT intraperitoneally for four weeks...
November 24, 2016: Neurological Research
https://www.readbyqxmd.com/read/27865751/feasibility-of-long-term-tibial-nerve-stimulation-using-a-multi-contact-and-wirelessly-powered-neurostimulation-system-implanted-in-rats
#4
Zainab Moazzam, Jason Paquette, Austin R Duke, Navid Khodaparast, Paul B Yoo
OBJECTIVES: Implant-driven tibial nerve stimulation (TNS) therapy is an effective technique for treating overactive bladder (OAB). However, the monopolar lead design in the currently available implantable devices pose long-term therapeutic challenges in terms of efficiently and selectively delivering electrical pulses to the target. Hence, the purpose of this study was to: (1) characterize the tibial nerve (TN) activation properties using a multi-contact implantable system and (2) evaluate the long-term stability of using such a neural interface in a pre-clinical model...
November 16, 2016: Urology
https://www.readbyqxmd.com/read/27861939/changes-in-electromyographic-amplitudes-but-not-latencies-occur-with-endotracheal-tube-malpositioning-during-intraoperative-monitoring-for-thyroid-surgery-implications-for-guidelines
#5
Samuel R Barber, Whitney Liddy, Natalia Kyriazidis, Matteo Cinquepalmi, Brian M Lin, Rahul Modi, Stephanie Patricio, Dipti Kamani, Carlo Belotti, Sadhana Mahamad, Bradley Lawson, Gregory W Randolph
OBJECTIVES/HYPOTHESIS: During intraoperative neural monitoring (IONM) in thyroid and parathyroid surgery, endotracheal (ET) tube migration can result in a decrease in vocalis electromyographic (EMG) amplitude without a concordant latency elevation during stimulation of the recurrent laryngeal nerve (RLN). STUDY DESIGN: Retrospective review. METHODS: Data were reviewed retrospectively for thyroid and parathyroid surgery patients with IONM of the laryngeal nerves from January 2015 to December 2015...
November 16, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27861715/the-value-of-the-bulbocavernosus-reflex-and-pudendal-nerve-somatosensory-evoked-potentials-in-distinguishing-between-multiple-system-atrophy-and-parkinson-s-disease-at-an-early-stage
#6
Z-Y Cai, X-T Niu, J Pan, P-Q Ni, X Wang, B Shao
OBJECTIVES: This study was designed to investigate the clinical value of the bulbocavernosus reflex (BCR) and pudendal nerve somatosensory evoked potentials (PSEPs) in the differential diagnosis between multiple system atrophy (MSA) and Parkinson's disease (PD) in early stage. MATERIALS AND METHODS: A total of 31 patients with MSA, 45 patients with PD, and 60 healthy participants were included in this study. A Keypoint EMG/EP system was used for BCR and PSEP measurements...
November 10, 2016: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/27820766/neurologic-evaluations-of-patients-exposed-to-the-world-trade-center-disaster
#7
Mark M Stecker, Huiying Yu, Renee Barlev, Michael Marmor, Marc Wilkenfeld
OBJECTIVE: The aim of this study was to describe the clinical phenotype of a limited group of responders and survivors of the World Trade Center (WTC) disaster who were referred for the evaluation of neuropathic symptoms. METHODS: Sixteen patients with WTC exposure were referred to a neurologist for evaluation. All had a neurologic examination. Most had electromyogram and nerve conduction testing/nerve conduction studies as well as appropriate imaging and blood tests...
November 2016: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/27816166/-perineural-dexmedetomidine-effects-on-sciatic-nerve-in-rat
#8
Abdulkadir Yektaş, Murat Çabalar, Mehmet Sar, Ayşin Alagöl, Duygu Sultan Çelik, Vildan Yayla, Deniz Tolga
The present study was designed to test the hypothesis that high dose dexmedetomidine would increase the duration of antinociception to a thermal stimulus in a rat model of sciatic nerve blockade without causing nerve damage. The rats were anesthetized with isoflurane. After electromyography (EMG) recordings, right sciatic nerves were explored and perineural injections were delivered: Group D (n=7), 40μgμgkg(-1) dexmedetomidine administration, Group II (n=6), (0.2mL) saline administration, Group III (n=2), only surgically exploration of the right sciatic nevre...
November 2, 2016: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/27812786/the-functional-role-of-the-pharyngeal-plexus-in-vocal-cord-innervation-in-humans
#9
Mehmet Uludag, Nurcihan Aygun, Adnan Isgor
Classical understanding of the function of the pharyngeal plexus in humans is that it relies on both motor branches for innervation of the majority of pharyngeal muscles and sensory branches for the pharyngeal wall sensation. To date there has been no reported data on the role of the pharyngeal plexus in vocal cord innervation. The aim of this study is to evaluate whether or not the plexus pharyngeus contributes to the innervation of the vocal cords. One hundred twenty-five sides from 79 patients (59 female, 20 male) undergoing thyroid surgery with intraoperative neuromonitoring were prospectively evaluated...
November 3, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27800089/-socio-professional-impact-of-surgical-release-of-carpal-tunnel-syndrome
#10
Aouatef Mahfoudh Kraiem, Hajer Hnia, Lamia Bouzgarrou, Mohamed Adnène Henchi, Taoufik Khalfallah
The objective was studying the socio-professional impact of release surgery for carpal tunnel syndrom (CTS). We conducted a cross-sectional study of patients operated for work-related CTS; data were collected in the Occupational Health Department at the University Hospital Tahar Sfar in Mahdia, Tunisia over a period of 8 years, from 1 January 2006 to December 2013. Data collection was performed using a survey form focusing on participants' socio-professional and medical characteristics and on their professional future...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27790497/an-unusual-presentation-of-scrub-typhus
#11
Giridhar Reddy Banda, Srikrishna Raghavendra Boddu, Priyanka Ballal, Jayaprakash Belle
Presentation of scrub typhus associated with brachial neuritis is extremely rare with only a few cases reported so far. Here, we report a case of a 45-year-old female who presented with fever and right shoulder pain. Laboratory parameters showed leucocytosis with ELISA and PCR for scrub typhus positive. Electromyography (EMG) and Nerve Conduction Velocity (NCV) study was suggestive of brachial neuritis. She was given doxycycline therapy for 10 days following which her shoulder pain resolved.
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27789344/behavioral-and-electromyographic-assessment-of-oxaliplatin-induced-motor-dysfunctions-evidence-for-a-therapeutic-effect-of-allopregnanolone
#12
Omar Taleb, Fateh Bouzobra, Hava Tekin-Pala, Laurence Meyer, Ayikoé, G Mensah-Nyagan, Christine Patte-Mensah
The antineoplastic oxaliplatin (OXAL) is pivotal for metastatic cancer treatments. However, OXAL evokes sensory and motor side-effects including pain, muscle weakness, motor nerve fiber dysfunctions/neuropathies that significantly impact patients' lives. Therefore, preclinical investigations are struggling to characterize effective analgesics against OXAL-induced painful/sensory symptoms but surprisingly, OXAL-evoked motor dysfunctions received little attention although these neurological symptoms are also disabling for patients...
October 24, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27782162/diagnostic-value-and-surgical-implications-of-the-3d-dw-ssfp-mri-on-the-management-of-patients-with-brachial-plexus-injuries
#13
Ben-Gang Qin, Jian-Tao Yang, Yi Yang, Hong-Gang Wang, Guo Fu, Li-Qiang Gu, Ping Li, Qing-Tang Zhu, Xiao-Lin Liu, Jia-Kai Zhu
Three-dimensional diffusion-weighted steady-state free precession (3D DW-SSFP) of high-resolution magnetic resonance has emerged as a promising method to visualize the peripheral nerves. In this study, the application value of 3D DW-SSFP brachial plexus imaging in the diagnosis of brachial plexus injury (BPI) was investigated. 33 patients with BPI were prospectively examined using 3D DW-SSFP MR neurography (MRN) of brachial plexus. Results of 3D DW-SSFP MRN were compared with intraoperative findings and measurements of electromyogram (EMG) or somatosensory evoked potentials (SEP) for each injured nerve root...
October 26, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27776001/central-factors-contribute-to-knee-extensor-strength-loss-after-2000-m-rowing-in-elite-male-and-female-rowers
#14
Florian Husmann, Martin Gube, Sabine Felser, Matthias Weippert, Anett Mau-Moeller, Sven Bruhn, Martin Behrens
PURPOSE: Despite growing interest in task-dependent alterations of central and peripheral fatigue following endurance exercise, little is known about the impact of rowing on quadriceps muscle fatigue. This study aimed to investigate central and peripheral mechanisms of fatigue following a 2000-m rowing time-trial. METHODS: Eight competitive rowers (4 males, 4 females, 20 ± 4 years) performed a 2000-m time-trial on an indoor rower and a control condition (sitting)...
October 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27757428/can-intraoperative-neurophysiologic-monitoring-during-cervical-spine-decompression-predict-post-operative-segmental-c5-palsy
#15
Siavash S Haghighi, Donald J Blaskiewicz, Bertha Ramirez, Richard Zhang
BACKGROUND: C5 nerve root palsy is a known complication after cervical laminectomy or laminoplasty, characterized by weakness of the deltoid and bicep brachii muscles. The efficacy of intraoperative monitoring of these muscles is currently unclear. In the current prospective study, intraoperative monitoring through somatosensory (SSEPs), motor (TcMEPs) evoked potentials and real-time electromyography activity (EMG) were analyzed for their ability to detect or prevent deltoid muscle weakness after surgery...
September 2016: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27735149/clinical-and-aetiological-spectrum-of-hypokalemic-flaccid-paralysis-in-western-odisha
#16
Biranchi Narayan Mohapatra, Sujit Kumar Lenka, Manoranjan Acharya, Chakradhar Majhi, Gouri Oram, Khetra Mohan Tudu
OBJECTIVE: To study the clinical profile of hypokalemic flaccid paralysis (HKFP) and to evaluate its causes. METHODS: Fifty cases of hypokalemic flaccid paralysis (HKFP) admitted between November 2012 to October 2014 were taken up in the study. Serum potassium level < 3.5 mmol/ltr has been taken as hypokalemia. All cases were studied for spot and/or 24 hour urinary sodium / potassium, serum potassium / calcium / magnesium. Hypokalemic periodic paralysis (HPP) were diagnosed if there was spot/24 hour urine potassium excretion < 20mmol/ltr in presence of hypokalemia and flaccid weakness without other causes...
May 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27730358/mri-of-pathology-proven-peripheral-nerve-amyloidosis
#17
Gavin A McKenzie, Stephen M Broski, Benjamin M Howe, Robert J Spinner, Kimberly K Amrami, Angela Dispenzieri, Michael D Ringler
OBJECTIVE: To highlight the MRI characteristics of pathologically proven amyloidosis involving the peripheral nervous system (PNS) and determine the utility of MRI in directing targeted biopsy for aiding diagnosis. MATERIALS AND METHODS: A retrospective study was performed for patients with pathologically proven PNS amyloidosis who also underwent MRI of the biopsied or excised nerve. MRI signal characteristics, nerve morphology, associated muscular denervation changes, and the presence of multifocal involvement were detailed...
October 12, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27725887/training-specific-neural-plasticity-in-spinal-reflexes-after-incomplete-spinal-cord-injury
#18
Atif S Khan, Susan K Patrick, Francois D Roy, Monica A Gorassini, Jaynie F Yang
The neural plasticity of spinal reflexes after two contrasting forms of walking training was determined in individuals with chronic, motor-incomplete spinal cord injury (SCI). Endurance Training involved treadmill walking for as long as possible, and Precision Training involved walking precisely over obstacles and onto targets overground. Twenty participants started either Endurance or Precision Training for 2 months and then crossed over after a 2-month rest period to the other form of training for 2 months...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27716571/pedicle-screw-position-changing-policy-for-nerve-injury-problems-during-screw-insertion-on-thoracolumbar-compression-fractures
#19
Ahmad Jabir Rahyussalim, Ifran Saleh, M Fajrin Armin, Tri Kurniawati, Ahmad Yanuar Safri
INTRODUCTION: Intraoperative neurophysiologic monitoring (IONM) had important role related to the complications in spinal surgery. Somatosensory Evoked Potential (SSEP), Transcranial electric Muscle Evoked Potentials (tceMEPs), and free run EMG are parameters used to asses functional integrity of the nervous system during surgical procedures. Once warning signal was recognized, surgeon have to make a precise decision to overcome that problem. PRESENTATION OF CASE: We present a 47-year old male with back pain due to compression fracture of thoracic vertebra T12 and lumbar vertebrae L1...
September 23, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27709072/hirayama-s-disease-an-italian-single-center-experience-and-review-of-the-literature
#20
Valerio Vitale, Ferdinando Caranci, Chiara Pisciotta, Fiore Manganelli, Francesco Briganti, Lucio Santoro, Arturo Brunetti
BACKGROUND: Hirayama's disease (HD), is a benign, self-limited, motor neuron disease, characterized by asymmetric weakness and atrophy of one or both distal upper extremities. In the present study we report the clinical, electrophysiological and MRI features of a group of Italian patients, with review of the literature. Moreover we propose an optimized MRI protocol for patients with suspected or diagnosed HD in order to make an early diagnosis and a standardized follow up. METHODS: Eight patients with clinical suspicion of Hirayama disease underwent evaluation between January 2007 and November 2013...
August 2016: Quantitative Imaging in Medicine and Surgery
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