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Neurophysiology

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https://www.readbyqxmd.com/read/28102097/familiar-auditory-sensory-training-in-chronic-traumatic-brain-injury-a-case-study
#1
Emily Galassi Sullivan, Ann Guernon, Brett Blabas, Amy A Herrold, Theresa L-B Pape
PURPOSE: The evaluation and treatment for patients with prolonged periods of seriously impaired consciousness following traumatic brain injury (TBI), such as a vegetative or minimally conscious state, poses considerable challenges, particularly in the chronic phases of recovery. METHOD: This blinded crossover study explored the effects of familiar auditory sensory training (FAST) compared with a sham stimulation in a patient seven years post severe TBI. Baseline data were collected over 4 weeks to account for variability in status with neurobehavioral measures, including the Disorders of Consciousness scale (DOCS), Coma Near Coma scale (CNC), and Consciousness Screening Algorithm...
January 19, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28101476/psychometric-properties-of-the-persian-version-of-the-quality-of-life-in-epilepsy-inventory-in-the-later-life
#2
Abdolrahim Asadollahi, Laleh Fani Saberi, Ali Havasi, Mohammad-Hossein Kaveh
BACKGROUND AND PURPOSE: The reports indicate on the incidence of seizure disorder about 1.5 per cent of the normal elderly population. The Quality of Life in Epilepsy Inventory (QOLIE-31) has been pervasive simple tool to screen seizure in the busy neurophysiological settings and monitoring. It was constructed as self-administered tool in two formats, 89 and 31-items. To the reliability and validity of the QOLIE-31 across older adults in the southwest Iran and discuss its role in the detection of health-related quality of elderly patients with epilepsy...
December 2016: Journal of Epilepsy Research
https://www.readbyqxmd.com/read/28100657/frequency-tuning-of-synaptic-inhibition-underlying-duration-tuned-neurons-in-the-mammalian-inferior-colliculus
#3
Roberto Valdizón-Rodríguez, Paul A Faure
Inhibition plays an important role in creating the temporal response properties of duration-tuned neurons (DTNs) in the mammalian inferior colliculus (IC). Neurophysiological and computational studies indicate that duration selectivity in the IC is created through the convergence of excitatory and inhibitory synaptic inputs offset in time. We used paired tone stimulation and extracellular recording to measure the frequency tuning of the inhibition acting on DTNs in the IC of the big brown bat (Eptesicus fuscus)...
January 18, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28099345/trigeminal-somatosensory-evoked-potential-a-neurophysiological-tool-to-monitor-the-extent-of-lesion-of-ganglion-radiofrequency-thermocoagulation-in-idiopathic-trigeminal-neuralgia-a-case-control-study
#4
Yan-Xing Zhao, Su-Hua Miao, Yuan-Zhang Tang, Liang-Liang He, Li-Qiang Yang, Yu Ma, Jia-Xiang Ni
To reflect the extent of thermolesion of ganglion by testing the change of trigeminal somatosensory-evoked potential (TSEP) before and after ganglion radiofrequency thermocoagulation surgery (GRT), and evaluate long-term clinic effect by follow-up visiting of 1 year.Patients with idiopathic trigeminal neuralgia (TN) in the second division were enrolled between October 2014 and October 2015. They were treated with computed tomography-guided GRT and a follow-up visiting of 1 year. Bilateral TSEP measurements were performed 1 day before and 2 days after the GRT surgery...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28099234/electrographic-seizures-in-children-and-neonates-undergoing-extracorporeal-membrane-oxygenation
#5
Jainn-Jim Lin, Brenda L Banwell, Robert A Berg, Dennis J Dlugos, Rebecca N Ichord, Todd J Kilbaugh, Roxanne E Kirsch, Matthew P Kirschen, Daniel J Licht, Shavonne L Massey, Maryam Y Naim, Natalie E Rintoul, Alexis A Topjian, Nicholas S Abend
OBJECTIVE: We aimed to determine the prevalence and risk factors for electrographic seizures in neonates and children requiring extracorporeal membrane oxygenation support. DESIGN: Prospective quality improvement project. SETTING: Quaternary care pediatric institution. PATIENTS: Consistent with American Clinical Neurophysiology Society electroencephalographic monitoring recommendations, neonates and children requiring extracorporeal membrane oxygenation support underwent clinically indicated electroencephalographic monitoring...
January 17, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28097486/the-therapeutic-effectiveness-of-delayed-fetal-spinal-cord-tissue-transplantation-on-respiratory-function-following-mid-cervical-spinal-cord-injury
#6
Chia-Ching Lin, Sih-Rong Lai, Yu-Han Shao, Chun-Lin Chen, Kun-Ze Lee
Respiratory impairment due to damage of the spinal respiratory motoneurons and interruption of the descending drives from brainstem premotor neurons to spinal respiratory motoneurons is the leading cause of morbidity and mortality following cervical spinal cord injury. The present study was designed to evaluate the therapeutic effectiveness of delayed transplantation of fetal spinal cord (FSC) tissue on respiratory function in rats with mid-cervical spinal cord injury. Embryonic day-14 rat FSC tissue was transplanted into a C4 spinal cord hemilesion cavity in adult male rats at 1 week postinjury...
January 17, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28095964/f-wave-duration-parameters-as-a-specific-and-sensitive-tool-for-diagnosis-of-restless-legs-syndrome
#7
Patrizia Congiu, Maria Livia Fantini, Giulia Milioli, Paolo Tacconi, Michela Figorilli, Gioia Gioi, Bruno Pereira, Francesco Marrosu, Liborio Parrino, Monica Puligheddu
STUDY OBJECTIVES: Restless legs syndrome, also known as Willis-Ekbom disease (RLS/WED), is a frequent condition, though its pathophysiology is not completely understood. The diagnosis of RLS/WED relies on clinical criteria, and the only instrumental tool, the suggested immobilization test, may lead to equivocal results. Recently, neurophysiological parameters related to F-wave duration have been proposed as a diagnostic aid. The aim of this study is to assess and compare the diagnostic values of these parameters in diagnosis of RLS/WED...
January 11, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28095192/spike-centered-jitter-can-mistake-temporal-structure
#8
Jonathan Platkiewicz, Eran Stark, Asohan Amarasingham
Jitter-type spike resampling methods are routinely applied in neurophysiology for detecting temporal structure in spike trains (point processes). Several variations have been proposed. The concern has been raised, based on numerical experiments involving Poisson spike processes, that such procedures can be conservative. We study the issue and find it can be resolved by reemphasizing the distinction between spike-centered (basic) jitter and interval jitter. Focusing on spiking processes with no temporal structure, interval jitter generates an exact hypothesis test, guaranteeing valid conclusions...
January 17, 2017: Neural Computation
https://www.readbyqxmd.com/read/28093711/clinical-neurophysiology-of-multiple-sclerosis
#9
Mario Habek, Ivan Adamec, Barbara Barun, Luka Crnošija, Tereza Gabelić, Magdalena Krbot Skorić
Different neurophysiological methods such as evoked potentials (EP), testing of the autonomic nervous system (ANS) or polysomnography have the potential to detect clinically silent lesions or to confirm the existence of an association between a clinical symptom and multiple sclerosis (MS); previously undetected by MRI. Therefore, in the most recent MRI criteria for the diagnosis of MS (MAGNIMS consensus guidelines), neurophysiological confirmation of optic nerve dysfunction (slowed conduction on visual EP), support dissemination in space and, in patients without concurrent visual symptoms, dissemination in time...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28093369/rehabilitation-of-the-pontine-ataxia-dysmetria-syndrome-a-case-presentation
#10
Stephanie Li, Kasondra Hartman, Krishna Surapaneni, Eric L Altschuler
We present a case of a patient with significant ataxia and dysmetria following a lacunar pontine infarction and review the literature on this uncommon syndrome. The patient had an excellent clinical course with near resolution of symptoms and signs in less than three weeks. We characterize and illustrate with videos of the ataxia and dysmetria. Interestingly, the characteristics of the dysmetria appear to be different than that seen in patients with dysmetria arising from a cerebellar or thalamic lesion. We discuss the likely neurophysiologic mechanisms responsible for the condition and recovery...
January 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28092091/preliminary-results-on-long-term-potentiation-like-cortical-plasticity-and-cholinergic-dysfunction-after-miglustat-treatment-in-niemann-pick-disease-type-c
#11
Alberto Benussi, Maria Sofia Cotelli, Maura Cosseddu, Valeria Bertasi, Marinella Turla, Ettore Salsano, Andrea Dardis, Alessandro Padovani, Barbara Borroni
Niemann-Pick disease type C (NPC) is a rare autosomal recessive lysosomal storage disorder, which manifests clinically with a wide range of neurological signs and symptoms. We assessed multiple neurological, neuropsychological and neurophysiological biomarkers using a transcranial magnetic stimulation (TMS) multi-paradigm approach in two patients with NPC carrying a homozygous mutation in the NPC1 gene, and in two heterozygous family members.We assessed short-interval intracortical inhibition (SICI), intracortical facilitation (ICF), long-interval intracortical inhibition (LICI), short-latency afferent inhibition (SAI) and long-term potentiation (LTP)-like cortical plasticity with a paired associative stimulation (PAS) protocol...
January 17, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28091578/temporal-dynamics-of-cerebellar-and-motor-cortex-physiological-processes-during-motor-skill-learning
#12
D Spampinato, P Celnik
Learning motor tasks involves distinct physiological processes in the cerebellum (CB) and primary motor cortex (M1). Previous studies have shown that motor learning results in at least two important neurophysiological changes: modulation of cerebellar output mediated in-part by long-term depression of parallel fiber-Purkinje cell synapse and induction of long-term plasticity (LTP) in M1, leading to transient occlusion of additional LTP-like plasticity. However, little is known about the temporal dynamics of these two physiological mechanisms during motor skill learning...
January 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28091394/a-simple-bio-inspired-vehicle-collision-detection-system
#13
Manfred Hartbauer
Modern cars are equipped with both active and passive sensor systems that can detect potential collisions. In contrast, locusts avoid collisions solely by responding to certain visual cues that are associated with object looming. In neurophysiological experiments, I investigated the possibility that "collision-detector neurons��� of locusts respond to impending collisions in films recorded with dashboard cameras of fast driving cars. In a complementary modelling approach, I developed a simple algorithm to reproduce the neuronal response that was recorded during object approach...
January 16, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28090374/neurophysiological-measures-and-alcohol-use-disorder-aud-hypothesizing-links-between-clinical-severity-index-and-molecular-neurobiological-patterns
#14
Mario Vitali, Carmen Napolitano, Marlene Oscar Berman, Simona Flamminii Minuto, Gemma Battagliese, Maria Luisa Attilia, Eric R Braverman, Marina Romeo, Kenneth Blum, Mauro Ceccanti
BACKGROUND: In 1987, Cloninger proposed a clinical description and classification of different personality traits genetically defined and independent from each other. Moreover, he elaborated a specific test the TCI to investigate these traits/states. The study of craving in Alcohol Use Disorder (AUD) assumed a greater significance, since ever more data seems to suggest a direct correlation between high levels of craving and a higher risk of relapse in alcoholics. Thus, our study aim is to explore the possible correlations among TCI linked molecular neurobiological pattern (s), craving and alcohol addiction severity measures in a sample of Italian alcoholics...
April 2016: Journal of Addiction Research & Therapy
https://www.readbyqxmd.com/read/28089759/using-pupil-size-and-heart-rate-to-infer-affective-states-during-behavioral-neurophysiology-and-neuropsychology-experiments
#15
Andrew R Mitz, Ravi V Chacko, Philip T Putnam, Peter H Rudebeck, Elisabeth A Murray
BACKGROUND: Nonhuman primates (NHPs) are a valuable research model because of their behavioral, physiological and neuroanatomical similarities to humans. In the absence of language, autonomic activity can provide crucial information about cognitive and affective states during single-unit recording, inactivation and lesion studies. Methods standardized for use in humans are not easily adapted to NHPs and detailed guidance has been lacking. NEW METHOD: We provide guidance for monitoring heart rate and pupil size in the behavioral neurophysiology setting by addressing the methodological issues, pitfalls and solutions for NHP studies...
January 12, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28089323/neurophysiological-monitoring-of-lumbar-spinal-nerve-roots-a-case-report-of-postoperative-deficit-and-literature-review
#16
Yuguang Chen, Baoqing P Wang, Junlin Yang, Yaolong Deng
INTRODUCTION: Intraoperative neurophysiological monitoring (IONM) has proven to help reduce the probability of postoperative neurological deficit for spinal deformity correctional surgeries. However, in rare cases new deficits may still happen. We report a surgical case in which the patient had postoperative paralysis. We would like to call for more case reports with postoperative neurological deficits as they present difficult clinical cases. PRESENTATION OF CASE: A 61-year-old male patient with severe thoracolumbar kyphoscoliosis underwent posterior spinal correction and fusion with segmental T10-L5 pedicle screws and rods instrumentation with IONM...
November 19, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28089079/repeated-subarachnoid-administrations-of-autologous-mesenchymal-stromal-cells-supported-in-autologous-plasma-improve-quality-of-life-in-patients-suffering-incomplete-spinal-cord-injury
#17
Jesús Vaquero, Mercedes Zurita, Miguel A Rico, Celia Bonilla, Concepción Aguayo, Cecilia Fernández, Noemí Tapiador, Marta Sevilla, Carlos Morejón, Jesús Montilla, Francisco Martínez, Esperanza Marín, Salvador Bustamante, David Vázquez, Joaquín Carballido, Alicia Rodríguez, Paula Martínez, Coral García, Mercedes Ovejero, Marta V Fernández
BACKGROUND AIMS: Cell therapy with mesenchymal stromal cells (MSCs) offers new hope for patients suffering from spinal cord injury (SCI). METHODS: Ten patients with established incomplete SCI received four subarachnoid administrations of 30 × 10(6) autologous bone marrow MSCs, supported in autologous plasma, at months 1, 4, 7 and 10 of the study, and were followed until the month 12. Urodynamic, neurophysiological and neuroimaging studies were performed at months 6 and 12, and compared with basal studies...
January 6, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28088484/optimal-trajectories-of-brain-state-transitions
#18
Shi Gu, Richard F Betzel, Marcelo G Mattar, Matthew Cieslak, Philip R Delio, Scott T Grafton, Fabio Pasqualetti, Danielle S Bassett
The complexity of neural dynamics stems in part from the complexity of the underlying anatomy. Yet how white matter structure constrains how the brain transitions from one cognitive state to another remains unknown. Here we address this question by drawing on recent advances in network control theory to model the underlying mechanisms of brain state transitions as elicited by the collective control of region sets. We find that previously identified attention and executive control systems are poised to affect a broad array of state transitions that cannot easily be classified by traditional engineering-based notions of control...
January 11, 2017: NeuroImage
https://www.readbyqxmd.com/read/28087816/acetazolamide-potentiates-the-afferent-drive-to-prefrontal-cortex-in%C3%A2-vivo
#19
Lezio S Bueno-Junior, Rafael N Ruggiero, Matheus T Rossignoli, Elaine A Del Bel, Joao P Leite, Osvaldo D Uchitel
The knowledge on real-time neurophysiological effects of acetazolamide is still far behind the wide clinical use of this drug. Acetazolamide - a carbonic anhydrase inhibitor - has been shown to affect the neuromuscular transmission, implying a pH-mediated influence on the central synaptic transmission. To start filling such a gap, we chose a central substrate: hippocampal-prefrontal cortical projections; and a synaptic phenomenon: paired-pulse facilitation (a form of synaptic plasticity) to probe this drug's effects on interareal brain communication in chronically implanted rats...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28086851/efficacy-of-intermittent-theta-burst-stimulation-itbs-and-10-hz-high-frequency-repetitive-transcranial-magnetic-stimulation-rtms-in-treatment-resistant-unipolar-depression-study-protocol-for-a-randomised-controlled-trial
#20
Samuel Bulteau, Veronique Sébille, Guillemette Fayet, Veronique Thomas-Ollivier, Thibault Deschamps, Annabelle Bonnin-Rivalland, Edouard Laforgue, Anne Pichot, Pierre Valrivière, Elisabeth Auffray-Calvier, June Fortin, Yann Péréon, Jean-Marie Vanelle, Anne Sauvaget
BACKGROUND: The treatment of depression remains a challenge since at least 40% of patients do not respond to initial antidepressant therapy and 20% present chronic symptoms (more than 2 years despite standard treatment administered correctly). Repetitive transcranial magnetic stimulation (rTMS) is an effective adjuvant therapy but still not ideal. Intermittent Theta Burst Stimulation (iTBS), which has only been used recently in clinical practice, could have a faster and more intense effect compared to conventional protocols, including 10-Hz high-frequency rTMS (HF-rTMS)...
January 13, 2017: Trials
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