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https://www.readbyqxmd.com/read/29911676/network-dynamics-in-the-healthy-and-epileptic-developing-brain
#1
Richard Rosch, Torsten Baldeweg, Friederike Moeller, Gerold Baier
Electroencephalography (EEG) allows recording of cortical activity at high temporal resolution. EEG recordings can be summarized along different dimensions using network-level quantitative measures, such as channel-to-channel correlation, or band power distributions across channels. These reveal network patterns that unfold over a range of different timescales and can be tracked dynamically. Here we describe the dynamics of network state transitions in EEG recordings of spontaneous brain activity in normally developing infants and infants with severe early infantile epileptic encephalopathies ( n = 8, age: 1-8 months)...
2018: Network neuroscience
https://www.readbyqxmd.com/read/29910723/information-theoretical-analysis-of-eeg-microstate-sequences-in-python
#2
Frederic von Wegner, Helmut Laufs
We present an open-source Python package to compute information-theoretical quantities for electroencephalographic data. Electroencephalography (EEG) measures the electrical potential generated by the cerebral cortex and the set of spatial patterns projected by the brain's electrical potential on the scalp surface can be clustered into a set of representative maps called EEG microstates. Microstate time series are obtained by competitively fitting the microstate maps back into the EEG data set, i.e., by substituting the EEG data at a given time with the label of the microstate that has the highest similarity with the actual EEG topography...
2018: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/29909187/epilepsia-partialis-continua-correlation-of-semiology-outcome-and-electrophysiologic-features
#3
Murat Mert Atmaca, Nerses Bebek, Elif Kocasoy-Orhan, Candan Gürses
OBJECTIVE: Epilepsia partialis continua (EPC) is a special form of cortical epilepsy. Several studies have described the ictal and interictal electroencephalography (EEG) findings in patients with EPC; however, lateralizing and localizing values of these findings have been evaluated rarely. This study investigated the correlation of semiologic and EEG findings, and outcomes in patients with EPC. PATIENTS AND METHODS: Clinical and EEG findings and outcomes, and their correlations were studied prospectively in 15 patients who were diagnosed as having EPC upon presentation to Istanbul Medical Faculty Hospital between January 2010 and April 2014, and retrospectively in 5 previously evaluated patients...
June 9, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29907780/effects-of-8-week-sensory-electrical-stimulation-combined-with-motor-training-on-eeg-emg-coherence-and-motor-function-in-individuals-with-stroke
#4
Li-Ling Hope Pan, Wen-Wen Yang, Chung-Lan Kao, Mei-Wun Tsai, Shun-Hwa Wei, Felipe Fregni, Vincent Chiun-Fan Chen, Li-Wei Chou
The peripheral sensory system is critical to regulating motor plasticity and motor recovery. Peripheral electrical stimulation (ES) can generate constant and adequate sensory input to influence the excitability of the motor cortex. The aim of this proof of concept study was to assess whether ES prior to each hand function training session for eight weeks can better improve neuromuscular control and hand function in chronic stroke individuals and change electroencephalography-electromyography (EEG-EMG) coherence, as compared to the control (sham ES)...
June 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29906699/causes-of-mortality-in-early-infantile-epileptic-encephalopathy-a-systematic-review
#5
REVIEW
Graciane Radaelli, Francisco de Souza Santos, Wyllians Vendramini Borelli, Leonardo Pisani, Magda Lahorgue Nunes, Fulvio Alexandre Scorza, Jaderson Costa da Costa
INTRODUCTION: Early infantile epileptic encephalopathy syndrome (EIEE), also known as Ohtahara syndrome, is an age-dependent epileptic encephalopathy syndrome defined by clinical features and electroencephalographic findings. Epileptic disorders with refractory seizures beginning in the neonatal period and/or early infancy have a potential risk of premature mortality, including sudden death. We aimed to identify the causes of death in EIEE and conducted a literature survey of fatal outcomes...
June 12, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29906696/ictal-signs-in-tuberous-sclerosis-complex-clinical-and-video-eeg-features-in-a-large-series-of-recorded-seizures
#6
Miriam Nella Savini, Alessia Mingarelli, Aglaia Vignoli, Francesca La Briola, Valentina Chiesa, Angela Peron, Roberto Mai, Laura Tassi, Massimo Mastrangelo, Elena Zambrelli, Katherine Turner, Maria Paola Canevini
Epilepsy is the most common neurological symptom in tuberous sclerosis complex (TSC), occurring in 72-85% of affected individuals. Despite the large number of patients reported, their electroclinical phenotype has been rarely described. We analyzed seizure semiology through ictal video-electroencephalography (V-EEG) recordings in a large series of patients. In this multicenter study, we reviewed V-EEGs of 51 patients: ictal recordings were analyzed in correlation with their clinical variables. The median age of epilepsy onset was six months (one day-16 years), with onset in the first year of life in 71% patients (36/51), in 10 of them during the neonatal period...
June 12, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29906549/theta-band-eeg-activity-over-sensorimotor-regions-is-modulated-by-expected-visual-reafferent-feedback-during-reach-planning
#7
Benjamin Dufour, François Thénault, Pierre-Michel Bernier
Activity in the primary motor cortex (M1) during reach planning is known to be correlated with the upcoming kinetics and kinematics of the hand. Yet recent work using visual-motor dissociation tasks suggests that M1 activity is also correlated with the visual consequences of an action, independent of the actual hand displacement. The goal of the present work was to investigate whether oscillatory activity over sensorimotor regions is modulated by the expectancy of visual reafferent feedback during reach planning...
June 12, 2018: Neuroscience
https://www.readbyqxmd.com/read/29904812/review-of-eeg-based-pattern-classification-frameworks-for-dyslexia
#8
Harshani Perera, Mohd Fairuz Shiratuddin, Kok Wai Wong
Dyslexia is a disability that causes difficulties in reading and writing despite average intelligence. This hidden disability often goes undetected since dyslexics are normal and healthy in every other way. Electroencephalography (EEG) is one of the upcoming methods being researched for identifying unique brain activation patterns in dyslexics. The aims of this paper are to examine pros and cons of existing EEG-based pattern classification frameworks for dyslexia and recommend optimisations through the findings to assist future research...
June 15, 2018: Brain Informatics
https://www.readbyqxmd.com/read/29904713/data-on-multimodal-approach-for-early-poor-outcome-cerebral-performance-categories-3-5-prediction-after-cardiac-arrest
#9
Maenia Scarpino, Giovanni Lanzo, Francesco Lolli, Riccardo Carrai, Marco Moretti, Maddalena Spalletti, Morena Cozzolino, Adriano Peris, Aldo Amantini, Antonello Grippo
The data presented in this article are related to our research article entitled 'Neurophysiological and neuroradiological multimodal approach for early poor outcome prediction after cardiac arrest' (Scarpino et al., 2018) [1]. We reported two additional analyses, including results gathered from somatosensory evoked potentials(SEPs), brain computed tomography(CT) and electroencephalography(EEG) performed on 183 subjects within the first 24 h after cardiac arrest(CA). In the first analysis, we considered the Cerebral Performance Categories(CPC) 3, 4 and 5a,b (severe disability, unresponsive wakefulness state, neurological death and non-neurological death, respectively) as poor outcomes...
August 2018: Data in Brief
https://www.readbyqxmd.com/read/29904654/a-high-density-scalp-eeg-dataset-acquired-during-brief-naps-after-a-visual-working-memory-task
#10
Ning Mei, Michael D Grossberg, Kenneth Ng, Karen T Navarro, Timothy M Ellmore
There is growing interest in understanding how specific neural events that occur during sleep, including characteristic spindle oscillations between 10 and 16 Hz (Hz), are related to learning and memory. Neural events can be recorded during sleep using the well-known method of scalp electroencephalography (EEG). While publicly available sleep EEG datasets exist, most consist of only a few channels collected in specific patient groups being evaluated overnight for sleep disorders in clinical settings. The dataset described in this Data in Brief includes 22 participants who each participated in EEG recordings on two separate days...
June 2018: Data in Brief
https://www.readbyqxmd.com/read/29903649/cortical-activity-during-walking-and-balance-tasks-in-older-adults-and-in-people-with-parkinson-s-disease-a-structured-review
#11
REVIEW
Samuel Stuart, Rodrigo Vitorio, Rosie Morris, Douglas N Martini, Peter C Fino, Martina Mancini
An emerging body of literature has examined cortical activity during walking and balance tasks in older adults and in people with Parkinson's disease, specifically using functional near infrared spectroscopy (fNIRS) or electroencephalography (EEG). This review provides an overview of this developing area, and examines the disease-specific mechanisms underlying walking or balance deficits. Medline, PubMed, PsychInfo and Scopus databases were searched. Articles that described cortical activity during walking and balance tasks in older adults and in those with PD were screened by the reviewers...
July 2018: Maturitas
https://www.readbyqxmd.com/read/29903485/a-quasi-probabilistic-distribution-model-for-eeg-signal-classification-by-using-2-d-signal-representation
#12
Cagatay Murat Yilmaz, Cemal Kose, Bahar Hatipoglu
BACKGROUND AND OBJECTIVE: Electroencephalography (EEG) is a method that measures and records the electrical activity of the human brain. These biomedical signals are currently being actively used in many research fields and have a wide range of potential uses in brain-computer interfaces (BCIs). The main aim of the present work is to improve the classification of EEG patterns for EEG-based BCI systems. METHODS: In this paper, we presented a classification approach for EEG-based BCIs...
August 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29899704/the-relationship-between-respiratory-related-premotor-potentials-and-small-perturbations-in-ventilation
#13
Anna L Hudson, Marie-Cécile Niérat, Mathieu Raux, Thomas Similowski
Respiratory-related premotor potentials from averaged electroencephalography (EEG) over the motor areas indicate cortical activation in healthy participants to maintain ventilation in the face of moderate inspiratory or expiratory loads. These experimental conditions are associated with respiratory discomfort, i.e., dyspnea. Premotor potentials are also observed in resting breathing in patients with reduced automatic respiratory drive or respiratory muscle strength due to respiratory or neurological disease, presumably in an attempt to maintain ventilation...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29899691/brain-functional-connectivity-changes-after-transcranial-direct-current-stimulation-in-epileptic-patients
#14
Franca Tecchio, Carlo Cottone, Camillo Porcaro, Andrea Cancelli, Vincenzo Di Lazzaro, Giovanni Assenza
Focal epilepsy is a network pathology, where the brain connectivity of the epileptic focus (EF) influences seizure frequency and cortical dysfunction. Growing evidence supports a clinical efficacy of cathodal transcranial direct current stimulation (ctDCS) in drug-resistant epilepsy (DRE). ctDCS effects can be merely attributed to the inhibition of cortical excitability, which is abnormally increased in epilepsy, but its effect on brain network of DRE patients has never been reported. We aimed at exploring the hypothesis that functional connectivity (FC) changes may explain part of ctDCS clinical effects in DRE patients...
2018: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/29899657/quantitative-electroencephalographic-changes-and-hippocampal-atrophy-in-diabetic-patients-with-mild-cognitive-impairment-in-ismailia-region
#15
Ahmed Abo Hagar, Yossri Ashour, Reda Abd El-Razek, Mohamed Elsamahy, Osama Shehab
Background: Cognitive decline could start or get worse among elderly patients with diabetes mellitus more than elderly without diabetes mellitus. So, those diabetic elderly patients have more risk to develop Alzheimer's disease and vascular dementia. Patients and Methods: This study included 48 elderly, grouped into three equal groups. First group included patients with diabetes mellitus and cognitive impairment. Second group included patients with diabetes mellitus and no cognitive impairment...
2018: The Egyptian journal of neurology, psychiatry and neurosurgery
https://www.readbyqxmd.com/read/29898460/development-of-a-standardized-cranial-phantom-for-training-and-optimization-of-functional-stereotactic-operations
#16
Marie T Krüger, Volker A Coenen, Karl Egger, Mukesch Shah, Peter C Reinacher
BACKGROUND: In recent years, simulations based on phantom models have become increasingly popular in the medical field. In the field of functional and stereotactic neurosurgery, a cranial phantom would be useful to train operative techniques, such as stereo-electroencephalography (SEEG), to establish new methods as well as to develop and modify radiological techniques. In this study, we describe the construction of a cranial phantom and show examples for it in stereotactic and functional neurosurgery and its applicability with different radiological modalities...
June 13, 2018: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/29897141/swedish-consensus-reached-on-recording-interpretation-and-reporting-of-neonatal-continuous-simplified-electroencephalography-that-is-supported-by-amplitude-integrated-trend-analysis
#17
Sofia Backman, Ingmar Rosén, Mats Blennow, Thomas Andersson, Marita Englund, Roland Flink, Boubou Hallberg, Lars-Johan Liedholm, Elisabeth Norman, Alexandra Sailer, Magnus Thordstein
Continuous monitoring of electroencephalography (EEG), with a focus on amplitude-integrated EEG (aEEG), has been used in neonatal intensive care for decades. A number of systems have been suggested for describing and quantifying aEEG patterns. Extensive full-montage EEG monitoring is used in specialised intensive care units. The American Clinical Neurophysiology Society published recommendations for defining and reporting EEG findings in critically ill adults and infants. Swedish neonatologists and clinical neurophysiologists collaborated to optimise simplified neonatal continuous aEEG and EEG recordings based on these American documents...
June 13, 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/29897002/early-amplitude-integrated-electroencephalogram-as-a-predictor-of-brain-injury-in-newborns-with-very-low-birth-weight-a-cohort-study
#18
Luiza V S Magalhães, Maria Isabel B Winckler, José Augusto Bragatti, Renato S Procianoy, Rita C Silveira
PURPOSE: To evaluate the relationship between abnormal early amplitude integrated electroencephalography (EEG) and severe lesions in imaging tests performed during the neonatal period in very low birth weight infants. METHODS: An amplitude-integrated EEG was performed in 70 patients with a mean birth weight of 1226 g during the first 48 hours of life. Severe lesions on magnetic resonance imaging (MRI) or ultrasonography (US) during the neonatal period were considered as adverse conditions...
January 1, 2018: Journal of Child Neurology
https://www.readbyqxmd.com/read/29896222/instant-sedative-effect-of-acupuncture-at-gv20-on-the-frequency-of-electroencephalogram-%C3%AE-and-%C3%AE-waves-in-a-model-of-sleep-deprivation
#19
Jia Li, Xiao Ran, Chao Cui, Chao Xiang, Ao Zhang, Feng Shen
Sleep deprivation (SD) adversely affects brain function and is accompanied by frequency-dependent changes in electroencephalograms (EEGs). Recent studies have suggested that acupuncture is an emerging alternative therapy for SD. However, the involvement of the frequency of EEG α and β waves in the protective effect of acupuncture against SD remains unknown. The present study investigated the instant effect of acupuncture at GV20 on insomnia by analyzing the frequency of α and β waves using electroencephalography in a model of sleep deprivation...
June 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29896094/neural-basis-of-the-emotional-conflict-processing-in-major-depression-erps-and-source-localization-analysis-on-the-n450-and-p300-components
#20
Jing Zhu, Jianxiu Li, Xiaowei Li, Juan Rao, Yanrong Hao, Zhijie Ding, Gangping Wang
Objects: Effective psychological function requires that cognition is not affected by task-irrelevant emotional stimuli in emotional conflict. Depression is mainly characterized as an emotional disorder. The object of this study is to reveal the behavioral and electrophysiological signature of emotional conflict processing in major depressive disorder (MDD) using event-related potentials (ERPs) and standardized low-resolution brain electromagnetic tomography (sLORETA) analysis. Method: We used a face-word Stroop task involving emotional faces while recording EEG (electroencephalography) in 20 patients with MDD and 20 healthy controls (HCs)...
2018: Frontiers in Human Neuroscience
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