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Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society

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https://www.readbyqxmd.com/read/29135702/relationship-between-sensory-dysfunction-and-walking-speed-in-patients-with-clinically-isolated-syndrome
#1
Magdalena Krbot Skorić, Luka Crnošija, Tereza Gabelić, Ivan Adamec, Mario Habek
PURPOSE: The aim of this study was to investigate a relationship between sensory dysfunction examined with somatosensory-evoked potentials of the posterior tibial nerve (tSSEP) and walking speed in patients with clinically isolated syndrome. METHODS: In 120 patients (mean age 32.2 ± 8.7 years, 84 females), Expanded Disability Status Scale (EDSS), timed 25-foot walk test (T25FW), brain and spinal cord MRI, and tSSEP were performed. P40 latencies and N22a-P40 interlatencies were analyzed, and the z-score for each latency was calculated and combined into total tSSEP z-score...
November 7, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29112523/electrophysiological-study-of-the-frontal-branch-of-the-facial-nerve-in-normal-subjects
#2
Alberto M Cappellari
INTRODUCTION: The authors compared the electrophysiological results of the frontal branch over the main trunk stimulation of the facial nerve in normal subjects. METHODS: Nerve conduction studies of the main trunk and frontal branch of the facial nerve were performed on both sides of 31 healthy subjects, recording the compound muscle action potential (CMAP) from the frontalis muscle. RESULTS: A good quality CMAP was obtained in all subjects after stimulation of the frontal branch, but only in 64...
October 31, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29111992/cardiovascular-and-cerebral-hemodynamics-in-asymptomatic-healthy-subjects-with-without-abnormal-head-up-tilt-test-versus-recurrent-fainters
#3
Antonio González-Hermosillo, Manuel Sierra-Beltrán, Ulises López-Peña, Andrei Kostin, Guadalupe Hernández-Pacheco, Claudia Lerma
PURPOSE: The aim of this study was to compare hemodynamic and autonomic responses during head-up tilt test (HUTT) between healthy volunteers and patients with a history of fainting and confirmed vasovagal syncope. We hypothesize that the autonomic and hemodynamic physiologic responses remain intact during orthostatic stress in people without previous fainting and negative HUTT, but deteriorate similarly in patients with recurrent vasovagal syncope and in asymptomatic healthy subjects who develop a vasovagal response during HUTT...
October 27, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29099408/electrographic-and-clinical-natural-history-of-lateralized-periodic-discharges
#4
Vineet Punia, Ravi Vakani, Richard Burgess, Stephen Hantus
PURPOSE: The long-term electrographic features of lateralized periodic discharges (LPD) and their impact on clinical management are unclear. The authors investigated routine EEGs (rEEG) to analyze the delayed natural history of LPDs, and studied the clinical care of these patients. METHODS: After IRB approval, the prospectively maintained continuous EEG (cEEG) database was searched to identify patients fulfilling the following criteria: LPDs on cEEG, age ≥18 years, no epilepsy history, and rEEG completed within 1 to 12 months of hospital discharge...
October 26, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29023309/carpal-tunnel-syndrome-grading-using-high-resolution-ultrasonography
#5
Hala R El Habashy, Reem A El Hadidy, Sandra M Ahmed, Basma B El Sayed, Aya S Ahmed
No abstract text is available yet for this article.
October 10, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29023305/insights-into-the-therapeutic-effect-of-responsive-neurostimulation-assessed-with-scalp-eeg-recording-a-case-report
#6
Maria Jose Bruzzone, Naoum Issa, Sandra Rose, Peter Warnke, Vernon L Towle, James X Tao, Shasha Wu
The responsive neurostimulation system (RNS) is the first closed-loop neurostimulator approved as an adjunctive treatment for adults with medically refractory focal epilepsy from no more than two seizure foci. In addition to its therapeutic effect, it provides chronic intracranial EEG recordings, with limited storage capacity. Long-term monitoring with scalp EEG recordings can provide additional information regarding seizure patterns, the efficacy of RNS stimulation in aborting individual seizures, and the net effect of RNS on seizure control...
October 10, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29023304/association-of-insulin-and-cholesterol-levels-with-peripheral-nervous-system-function-in-overweight-adults-a-3-year-follow-up
#7
Henri Isojärvi, Sirkka Keinänen-Kiukaanniemi, Mika Kallio, Kaisu Kaikkonen, Timo Jämsä, Juha Korpelainen, Raija Korpelainen
PURPOSE: The purpose of this prospective 3-year follow-up was to investigate the association of glucose, insulin, and cholesterol levels with peripheral nervous system function in overweight and obese subjects. METHODS: Forty nondiabetic overweight and obese adults were enrolled, of whom 29 completed the follow-up. Peripheral nervous system function was measured and defined by conduction studies of the peroneal motor nerve and the radial, sural, and medial plantar sensory nerves...
October 10, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28930766/palinacousis-palinacousis-seven-new-cases
#8
Madeline C Fields, Lara V Marcuse, Ji-Yeoun Yoo, Saadi Ghatan
PURPOSE: Palinacousis is an auditory illusion of sound persisting or repeating after the cessation of an auditory stimulation. Up until now, approximately 32 cases have been reported. The purpose of this study is to describe an additional seven cases of palinacousis and review our understanding of audition and palinacousis. METHODS: Patients seen in the epilepsy clinic or admitted to the Epilepsy Monitoring Unit (EMU) at The Mount Sinai Hospital who experienced palinacousis were included...
September 15, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28922194/benign-neonatal-sleep-myoclonus-evokes-somatosensory-responses
#9
Emma Losito, Monika Eisermann, Patricia Vignolo, Shushanik Hovhannisyan, Jean François Magny, Anna Kaminska
PURPOSE: Benign neonatal sleep myoclonus is a common nonepileptic condition occurring in neurologically normal full-term newborns. During jerks, EEG has always been described as normal. The aim of this study was to describe EEG changes associated with the myoclonic jerks. METHODS: Polygraphic video-EEG recordings of four full-term neonates presenting benign neonatal sleep myoclonus were studied. Myoclonic jerks were analyzed regarding their topography, frequency, propagation pattern, and reflex component...
September 14, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28914659/relationship-between-alpha-rhythm-and-the-default-mode-network-an-eeg-fmri-study
#10
Anthony D Bowman, Joseph C Griffis, Kristina M Visscher, Allan C Dobbins, Timothy J Gawne, Mark W DiFrancesco, Jerzy P Szaflarski
PURPOSE: Reports of the relationship between the default mode network (DMN) and alpha power are conflicting. Our goal was to assess this relationship by analyzing concurrently obtained EEG/functional MRI data using hypothesis-independent methods. METHODS: We collected functional MRI and EEG data during eyes-closed rest in 20 participants aged 19 to 37 (10 females) and performed independent component analysis on the functional MRI data and a Hamming-windowed fast Fourier transform on the EEG data...
September 13, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28914658/are-the-sensory-fibers-of-the-ulnar-nerve-affected-in-carpal-tunnel-syndrome
#11
Özgür Selek, Murat Alemdar
PURPOSE: Distribution of paresthesia throughout the skin area without median nerve innervation is frequently seen in carpal tunnel syndrome (CTS). However, its pathophysiologic mechanisms are still unclear. We aimed to research whether a dysfunction in sensory fibers of the ulnar nerve (UN) was present or not in hands with CTS. METHODS: Totally, upper extremity nerve conduction study recordings of 508 patients were considered. After exclusions, 331 upper extremity recordings of 277 patients were included...
September 12, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28914657/hearing-protective-devices-should-be-used-by-recipients-of-repetitive-transcranial-magnetic-stimulation
#12
Robert L Folmer, Sarah M Theodoroff
No abstract text is available yet for this article.
September 11, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28858905/electroencephalogram-abnormalities-during-positional-changes-in-brain-sagging-syndrome
#13
Benziger Bensam, Heustein L Sy, Nadia Sotudeh, Paulomi K Bhalla, Sean T Hwang, David E LeDoux
PURPOSE: Brain sagging after craniotomy and clipping of a ruptured aneurysm is a rare complication. Clinical and electrographic changes in patients with a final diagnosis of intracranial hypotension are not well described, and can be mistaken on rare occasions for other entities such as nonconvulsive status epilepticus. There may be resulting delay in the diagnosis and treatment of this potentially life-threatening disorder. METHODS: Case report and imaging. RESULTS: We present a case of intracranial hypotension in which concerning continuous electroencephalogram (cEEG) and quantitative EEG (qEEG) findings were noted during active sagging of the brain, which resolved with supine positioning...
August 30, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29023308/considerations-about-carpal-tunnel-syndrome-grading-using-high-resolution-ultrasonography
#14
Daniele Coraci, Silvia Giovannini, Giulia Piccinini, Valter Santilli, Luca Padua
No abstract text is available yet for this article.
November 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29023307/interrater-agreement-of-eeg-interpretation-after-pediatric-cardiac-arrest-using-standardized-critical-care-eeg-terminology
#15
Nicholas S Abend, Shavonne L Massey, Mark Fitzgerald, France Fung, Natalie J Atkin, Rui Xiao, Alexis A Topjian
PURPOSE: We evaluated interrater agreement of EEG interpretation in a cohort of critically ill children resuscitated after cardiac arrest using standardized EEG terminology. METHODS: Four pediatric electroencephalographers scored 10-minute EEG segments from 72 consecutive children obtained 24 hours after return of circulation using the American Clinical Neurophysiology Society's (ACNS) Standardized Critical Care EEG terminology. The percent of perfect agreement and the kappa coefficient were calculated for each of the standardized EEG variables and a predetermined composite EEG background category...
November 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29023306/medical-error-avoidance-in-intraoperative-neurophysiological-monitoring-the-communication-imperative
#16
Stan Skinner, Robert Holdefer, John J McAuliffe, Francesco Sala
Error avoidance in medicine follows similar rules that apply within the design and operation of other complex systems. The error-reduction concepts that best fit the conduct of testing during intraoperative neuromonitoring are forgiving design (reversibility of signal loss to avoid/prevent injury) and system redundancy (reduction of false reports by the multiplication of the error rate of tests independently assessing the same structure). However, error reduction in intraoperative neuromonitoring is complicated by the dichotomous roles (and biases) of the neurophysiologist (test recording and interpretation) and surgeon (intervention)...
November 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28914656/charcot-marie-tooth-disease-type-1a-influence-of-body-mass-index-on-nerve-conduction-studies-and-on-the-charcot-marie-tooth-examination-score
#17
Nivedita U Jerath, Michael E Shy
PURPOSE: Charcot-Marie-Tooth Disease type 1A (CMT1A) is caused by a duplication of the peripheral myelin protein gene 22 at chromosome 17p11.2-12. There is limited data regarding whether body mass index (BMI) affects electrophysiological or clinical data in those with CMT1A. METHODS: Electrophysiological data, the Charcot-Marie-Tooth examination score (CMTES) and BMI from 101 patients with known CMT1A were obtained and analyzed. RESULTS: When controlling for age, a higher BMI does not affect ulnar motor nerve conduction studies in those with CMT1A, but rather components of the CMTES (loss of pinprick and motor strength in the lower extremities)...
November 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28786833/utility-of-eeg-activation-procedures-in-epilepsy-a-population-based-study
#18
Elisa Baldin, W A Hauser, Jeffrey R Buchhalter, Dale C Hesdorffer, Ruth Ottman
PURPOSE: No previous population-based study has addressed the contribution of activation procedures to the yield of epileptiform abnormalities on serial EEGs. We assessed yield of activation-related epileptiform abnormalities and predictors of finding an activation-related abnormality with multiple EEGs in a population-based study of newly diagnosed epilepsy. METHODS: We used the resources of the Rochester Epidemiology Project to identify 449 residents of Rochester, Minnesota with a diagnosis of newly diagnosed epilepsy at age 1 year or older, between 1960 and 1994, who had at least one EEG...
November 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28873073/eeg-characteristics-in-cooled-and-rewarmed-periods-in-post-cardiac-arrest-therapeutic-hypothermia-patients-erratum
#19
(no author information available yet)
No abstract text is available yet for this article.
September 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28873072/amplitude-integrated-eeg-and-brain-sparing-in-preterm-small-for-gestational-age-infants
#20
Isabel Benavente-Fernández, Simón P Lubián-López, Pamela Zafra-Rodríguez, Almudena Alonso-Ojembarrena, Antonio Segado-Arenas, Alfonso M Lechuga-Sancho
PURPOSE: Preterm small-for-gestational-age (SGA) infants are at risk for a high mortality rate and impaired cognitive development. Only a few studies have focused on amplitude-integrated EEG (aEEG) in preterm SGA infants. They have been shown to have a slower rate of brain maturation, but these findings have not consistently been related to neurodevelopmental outcomes. The aim of our study was to evaluate early aEEG monitoring in SGA compared with adequate-for-gestational-age preterms...
September 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
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