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https://www.readbyqxmd.com/read/29454756/outcomes-after-acute-symptomatic-seizures-in-neonates
#1
REVIEW
Hannah C Glass, Zachary M Grinspan, Renée A Shellhaas
Acute symptomatic seizures are a common sign of neurological dysfunction and brain injury in neonates and occur in approximately one to three per 1000 live births. Seizures in neonates are usually a sign of underlying brain injury and, as such, are commonly associated with adverse outcomes. Neurological morbidities in survivors often co-occur; epilepsy, cerebral palsy, and intellectual disability often occur together in the most severely affected children. Risk factors for adverse outcome include prematurity, low Apgar scores, low pH on the first day of life, seizure onset <24 or >72 h after birth, abnormal neonatal neurological examination, abnormal neonatal electroencephalographic background, status epilepticus, and presence and pattern of brain injury (particularly deep gray or brainstem injury)...
February 6, 2018: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29450808/localizing-event-related-potentials-using-multi-source-minimum-variance-beamformers-a-validation-study
#2
Anthony T Herdman, Alexander Moiseev, Urs Ribary
Adaptive and non-adaptive beamformers have become a prominent neuroimaging tool for localizing neural sources of electroencephalographic (EEG) and magnetoencephalographic (MEG) data. In this study, we investigated single-source and multi-source scalar beamformers with respect to their performances in localizing and reconstructing source activity for simulated and real EEG data. We compared a new multi-source search approach (multi-step iterative approach; MIA) to our previous multi-source search approach (single-step iterative approach; SIA) and a single-source search approach (single-step peak approach; SPA)...
February 15, 2018: Brain Topography
https://www.readbyqxmd.com/read/29449806/monitoring-attention-in-adhd-with-an-easy-to-use-electrophysiological-index
#3
Goded Shahaf, Uri Nitzan, Galit Erez, Shlomo Mendelovic, Yuval Bloch
Attention deficit hyperactivity disorder (ADHD) involves characteristic electroencephalographic (EEG) activity. We developed a single-channel EEG marker for attention: the Brain Engagement Index (BEI'). In this study, we evaluated the use of BEI' for distinguishing between ADHD patients and controls, and for monitoring the effect of pharmacological treatment on ADHD patients. The BEI' values of 20 ADHD patients and 10 controls were measured using a 1-min auditory oddball paradigm and a continuous performance test (CPT) task...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29448151/functional-cortical-source-connectivity-of-resting-state-electroencephalographic-alpha-rhythms-shows-similar-abnormalities-in-patients-with-mild-cognitive-impairment-due-to-alzheimer-s-and-parkinson-s-diseases
#4
Claudio Babiloni, Claudio Del Percio, Roberta Lizio, Giuseppe Noce, Susanna Lopez, Andrea Soricelli, Raffaele Ferri, Maria Teresa Pascarelli, Valentina Catania, Flavio Nobili, Dario Arnaldi, Francesco Famà, Francesco Orzi, Carla Buttinelli, Franco Giubilei, Laura Bonanni, Raffaella Franciotti, Marco Onofrj, Paola Stirpe, Peter Fuhr, Ute Gschwandtner, Gerhard Ransmayr, Heinrich Garn, Lucia Fraioli, Michela Pievani, Fabrizia D'Antonio, Carlo De Lena, Bahar Güntekin, Lutfu Hanoğlu, Erol Başar, Görsev Yener, Derya Durusu Emek-Savaş, Antonio Ivano Triggiani, John Paul Taylor, Maria Francesca De Pandis, Laura Vacca, Giovanni B Frisoni, Fabrizio Stocchi
OBJECTIVE: This study tested the hypothesis that markers of functional cortical source connectivity of resting state eyes-closed electroencephalographic (rsEEG) rhythms may be abnormal in subjects with mild cognitive impairment due to Alzheimer's (ADMCI) and Parkinson's (PDMCI) diseases compared to healthy elderly subjects (Nold). METHODS: rsEEG data had been collected in ADMCI, PDMCI, and Nold subjects (N = 75 for any group). eLORETA freeware estimated functional lagged linear connectivity (LLC) from rsEEG cortical sources...
January 31, 2018: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29445916/bottom-of-sulcus-focal-cortical-dysplasia-presenting-as-epilepsia-partialis-continua-multimodality-characterization-including-7t-mri
#5
Sarah A Kelley, Shenandoah Robinson, Nathan E Crone, Bruno P Soares
INTRODUCTION: Bottom-of-sulcus focal cortical dysplasias are an under recognized, surgically treatable cause of focal epilepsy. Resection can dramatically reduce the seizure burden for children with refractory epilepsy, or eliminate seizures altogether. MATERIAL AND METHODS: We report the case and present the results of multimodality evaluation of a 15-year-old young man who presented with long-standing partial epilepsy affecting his right leg, which over the years became refractory to therapy...
February 14, 2018: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29445334/post-task-effects-on-eeg-brain-activity-differ-for-various-differential-learning-and-contextual-interference-protocols
#6
Diana Henz, Alexander John, Christian Merz, Wolfgang I Schöllhorn
A large body of research has shown superior learning rates in variable practice compared to repetitive practice. More specifically, this has been demonstrated in the contextual interference (CI) and in the differential learning (DL) approach that are both representatives of variable practice. Behavioral studies have indicate different learning processes in CI and DL. Aim of the present study was to examine immediate post-task effects on electroencephalographic (EEG) brain activation patterns after CI and DL protocols that reveal underlying neural processes at the early stage of motor consolidation...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29444081/alpha-desynchronization-synchronization-during-working-memory-testing-is-compromised-in-acute-mild-traumatic-brain-injury-mtbi
#7
Xianghong Arakaki, Michael Shoga, Lianyang Li, George Zouridakis, Thao Tran, Alfred N Fonteh, Jessica Dawlaty, Robert Goldweber, Janice M Pogoda, Michael G Harrington
Diagnosing and monitoring recovery of patients with mild traumatic brain injury (mTBI) is challenging because of the lack of objective, quantitative measures. Diagnosis is based on description of injuries often not witnessed, subtle neurocognitive symptoms, and neuropsychological testing. Since working memory (WM) is at the center of cognitive functions impaired in mTBI, this study was designed to define objective quantitative electroencephalographic (qEEG) measures of WM processing that may correlate with cognitive changes associated with acute mTBI...
2018: PloS One
https://www.readbyqxmd.com/read/29443794/stability-of-early-eeg-background-patterns-after-pediatric-cardiac-arrest
#8
Nicholas S Abend, Rui Xiao, Sudha Kilaru Kessler, Alexis A Topjian
PURPOSE: We aimed to determine whether EEG background characteristics remain stable across discrete time periods during the acute period after resuscitation from pediatric cardiac arrest. METHODS: Children resuscitated from cardiac arrest underwent continuous conventional EEG monitoring. The EEG was scored in 12-hour epochs for up to 72 hours after return of circulation by an electroencephalographer using a Background Category with 4 levels (normal, slow-disorganized, discontinuous/burst-suppression, or attenuated-featureless) or 2 levels (normal/slow-disorganized or discontinuous/burst-suppression/attenuated-featureless)...
February 13, 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29442556/the-neural-correlates-of-economic-value-and-valuation-context-an-event-related-potentials-study
#9
John Andrew Tyson-Carr, Katerina Kokmotou, Vicente Soto, Stephanie Cook, Nicholas B Fallon, Timo Giesbrecht, Andrej Stancak
The value of environmental cues and internal states is continuously evaluated by the human brain and it is this subjective value that largely guides decision-making. The present study aimed to investigate the initial value attribution process, specifically the spatio-temporal activation patterns associated with values and valuation context using electroencephalographic event-related potentials (ERPs). Participants completed a stimulus rating task in which everyday household items marketed up to a price of £4 were evaluated with respect to their desirability or material properties...
February 14, 2018: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29442363/increased-neuronal-synchrony-prepares-mesial-temporal-networks-for-seizures-of-neocortical-origin
#10
Amrit Misra, Xianda Long, Michael R Sperling, Ashwini D Sharan, Karen A Moxon
OBJECTIVE: To gain understanding of the neuronal mechanisms underlying regional seizure spread, the impact of regional synchrony between seizure focus and downstream networks on neuronal activity during the transition to seizure in those downstream networks was assessed. METHODS: Seven patients undergoing diagnostic intracranial electroencephalographic studies for surgical resection of epileptogenic regions were implanted with subdural clinical electrodes into the cortex (site of seizure initiation) and mesial temporal lobe (MTL) structures (downstream) as well as microwires into MTL...
February 14, 2018: Epilepsia
https://www.readbyqxmd.com/read/29439335/abnormalities-of-resting-state-cortical-eeg-rhythms-in-subjects-with-mild-cognitive-impairment-due-to-alzheimer-s-and-lewy-body-diseases
#11
Claudio Babiloni, Claudio Del Percio, Roberta Lizio, Giuseppe Noce, Susanna Lopez, Andrea Soricelli, Raffaele Ferri, Maria Teresa Pascarelli, Valentina Catania, Flavio Nobili, Dario Arnaldi, Francesco Famà, Dag Aarsland, Francesco Orzi, Carla Buttinelli, Franco Giubilei, Marco Onofrj, Fabrizio Stocchi, Laura Vacca, Paola Stirpe, Peter Fuhr, Ute Gschwandtner, Gerhard Ransmayr, Heinrich Garn, Lucia Fraioli, Michela Pievani, Giovanni B Frisoni, Fabrizia D'Antonio, Carlo De Lena, Bahar Güntekin, Lutfu Hanoğlu, Erol Başar, Görsev Yener, Derya Durusu Emek-Savaş, Antonio Ivano Triggiani, Raffaella Franciotti, John Paul Taylor, Maria Francesca De Pandis, Laura Bonanni
The present study tested the hypothesis that cortical sources of resting state eyes-closed electroencephalographic (rsEEG) rhythms reveal different abnormalities in cortical neural synchronization in groups of patients with mild cognitive impairment due to Alzheimer's disease (ADMCI) and dementia with Lewy bodies (DLBMCI) as compared to cognitively normal elderly (Nold) subjects. Clinical and rsEEG data in 30 ADMCI, 23 DLBMCI, and 30 Nold subjects were available in an international archive. Age, gender, and education were carefully matched in the three groups...
2018: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29438177/eeg-factors-after-pediatric-cardiac-arrest
#12
Nicholas S Abend, Douglas J Wiebe, Rui Xiao, Shavonne L Massey, Mark Fitzgerald, France Fung, Alexis A Topjian
PURPOSE: We aimed to determine whether conventional standardized EEG features could be consolidated into a more limited number of factors and whether the derived factor scores changed during the acute period after pediatric cardiac arrest. METHODS: Children resuscitated after cardiac arrest underwent conventional continuous EEG monitoring. The EEG was scored in 12-hour epochs for up to 72-hours after return of circulation by an electroencephalographer using standardized critical care EEG terminology...
February 12, 2018: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/29435578/comparative-effectiveness-of-levetiracetam-vs-phenobarbital-for-infantile-epilepsy
#13
Zachary M Grinspan, Renée A Shellhaas, Jason Coryell, Joseph E Sullivan, Elaine C Wirrell, John R Mytinger, William D Gaillard, Eric H Kossoff, Ignacio Valencia, Kelly G Knupp, Courtney Wusthoff, Cynthia Keator, Nicole Ryan, Tobias Loddenkemper, Catherine J Chu, Edward J Novotny, John Millichap, Anne T Berg
Importance: More than half of infants with new-onset epilepsy have electroencephalographic and clinical features that do not conform to known electroclinical syndromes (ie, nonsyndromic epilepsy). Levetiracetam and phenobarbital are the most commonly prescribed medications for epilepsy in infants, but their comparative effectiveness is unknown. Objective: To compare the effectiveness of levetiracetam vs phenobarbital for nonsyndromic infantile epilepsy. Design, Setting, and Participants: The Early Life Epilepsy Study-a prospective, multicenter, observational cohort study conducted from March 1, 2012, to April 30, 2015, in 17 US medical centers-enrolled infants with nonsyndromic epilepsy and a first afebrile seizure between 1 month and 1 year of age...
February 12, 2018: JAMA Pediatrics
https://www.readbyqxmd.com/read/29433669/behavioral-and-electroencephalographic-evaluation-of-the-anticonvulsive-activity-of-moringa-oleifera-leaf-non-polar-extracts-and-one-metabolite-in-ptz-induced-seizures
#14
María Eva González-Trujano, Claudia Lizbeth Martínez-González, Maricela Flores-Carrillo, Sara Ibeth Luna-Nophal, Gerardo Contreras-Murillo, Víctor Manuel Magdaleno-Madrigal
BACKGORUND: Moringa oleifera Lamarck is a species that has long been used in high demand in folk medicine, including for the treatment of epilepsy. Nevertheless, scientific studies demonstrating its anticonvulsant properties and the nature of the bioactive constituents are lacking. HYPOTHESIS/AIM: The aim of this study was to evaluate the anticonvulsant activities of the Moringa oleifera leaves in non-polar vs. polar extracts using behavioral and electroencephalographic (EEG) analyses in rodents...
January 15, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29432110/the-cochlear-implant-eeg-artifact-recorded-from-an-artificial-brain-for-complex-acoustic-stimuli
#15
Luise Wagner, Natasha Maurits, Bert Maat, Deniz Baskent, Anita E Wagner
Electroencephalographic (EEG) recordings provide objective estimates of listeners' cortical processing of sounds and of the status of their speech perception system. For profoundly deaf listeners with cochlear implants (CIs), the applications of EEG are limited because the device adds electric artifacts to the recordings. This restricts the possibilities for the neural-based metrics of speech processing by CI users, for instance to gauge cortical reorganization due to individual's hearing loss history. This paper describes the characteristics of the CI artifact as recorded with an artificial head substitute, and reports how the artifact is affected by the properties of the acoustical input signal versus the settings of the device...
February 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29427344/directional-communication-during-movement-execution-interferes-with-tremor-in-parkinson-s-disease
#16
Georgios Naros, Florian Grimm, Daniel Weiss, Alireza Gharabaghi
BACKGROUND: Both the cerebello-thalamo-cortical circuit and the basal ganglia/cortical motor loop have been postulated to be generators of tremor in PD. The recent suggestion that the basal ganglia trigger tremor episodes and the cerebello-thalamo-cortical circuitry modulates tremor amplitude combines both competing hypotheses. However, the role of the STN in tremor generation and the impact of proprioceptive feedback on tremor suppression during voluntary movements have not been considered in this model yet...
February 2018: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/29427251/heart-brain-interactions-in-the-mr-environment-characterization-of-the-ballistocardiogram-in-eeg-signals-collected-during-simultaneous-fmri
#17
Marco Marino, Quanying Liu, Mariangela Del Castello, Cristiana Corsi, Nicole Wenderoth, Dante Mantini
The ballistocardiographic (BCG) artifact is linked to cardiac activity and occurs in electroencephalographic (EEG) recordings acquired inside the magnetic resonance (MR) environment. Its variability in terms of amplitude, waveform shape and spatial distribution over subject's scalp makes its attenuation a challenging task. In this study, we aimed to provide a detailed characterization of the BCG properties, including its temporal dependency on cardiac events and its spatio-temporal dynamics. To this end, we used high-density EEG data acquired during simultaneous functional MR imaging in six healthy volunteers...
February 9, 2018: Brain Topography
https://www.readbyqxmd.com/read/29425909/eeg-activity-during-the-spatial-span-task-in-young-men-differences-between-short-term-and-working-memory
#18
Miguel Angel Guevara, Edwin Iván Cruz Paniagua, Marisela Hernández González, Ivett Karina Sandoval Carrillo, Mayra Linné Almanza Sepúlveda, Jorge Carlos Hevia Orozco, Claudia Amezcua Gutiérrez
Short-term memory and working memory are two closely-related concepts that involve the prefrontal and parietal areas. These two types of memory have been evaluated by means of the spatial span task in its forward and backward conditions, respectively. To determine possible neurofunctional differences between them, this study recorded electroencephalographic activity (EEG) in the frontopolar (Fp1, Fp2), dorsolateral (F3, F4), and parietal (P3 and P4) areas during performance of the forward and backward conditions of this task in young men...
February 6, 2018: Brain Research
https://www.readbyqxmd.com/read/29422842/estimation-of-neuromuscular-primitives-from-eeg-slow-cortical-potentials-in-incomplete-spinal-cord-injury-individuals-for-a-new-class-of-brain-machine-interfaces
#19
Andrés Úbeda, José M Azorín, Dario Farina, Massimo Sartori
One of the current challenges in human motor rehabilitation is the robust application of Brain-Machine Interfaces to assistive technologies such as powered lower limb exoskeletons. Reliable decoding of motor intentions and accurate timing of the robotic device actuation is fundamental to optimally enhance the patient's functional improvement. Several studies show that it may be possible to extract motor intentions from electroencephalographic (EEG) signals. These findings, although notable, suggests that current techniques are still far from being systematically applied to an accurate real-time control of rehabilitation or assistive devices...
2018: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/29421271/event-related-desynchronization-of-mu-and-beta-oscillations-during-the-processing-of-novel-tool-names
#20
Laura Bechtold, Marta Ghio, Joachim Lange, Christian Bellebaum
According to the embodied cognition framework, the formation of conceptual representations integrates the type of experience during learning. In this electroencephalographic study, we applied a linguistic variant of a training paradigm, in which participants learned to associate novel names to novel tools while either manipulating or visually exploring them. The analysis focused on event-related desynchronization (ERD) of oscillations in the mu and beta frequency range, which reflects activation of sensorimotor brain areas...
February 5, 2018: Brain and Language
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