193,400 results match your criteria EEG in Brain Tumors


Status epilepticus after intracranial neurosurgery: incidence and risk stratification by perioperative clinical features.

J Neurosurg 2021 May 14:1-13. Epub 2021 May 14.

Departments of1Neurosurgery and.

Objective: Status epilepticus (SE) is associated with significant mortality, cost, and risk of future seizures. In one of the first studies of SE after neurosurgery, the authors assess the incidence, risk factors, and outcome of postneurosurgical SE (PNSE).

Methods: Neurosurgical admissions from the MarketScan Claims and Encounters database (2007 through 2015) were assessed in a longitudinal cross-sectional sample of privately insured patients who underwent qualifying cranial procedures in the US and were older than 18 years of age. Read More

View Article and Full-Text PDF

Spontaneous remission of West syndrome associated with acute infection and fever in five patients.

Epilepsy Res 2021 May 8;174:106663. Epub 2021 May 8.

Department of Neurology, Hospital Materno Infantil Salta, Argentina. Electronic address:

Objective: We analyzed the records of 198 patients with West syndrome (WS) seen at a single pediatric neurology center in Argentina between June 2004 and June 2017. Five patients with infection-related spontaneous remission of the electroclinical manifestations were identified.

Methods: The following parameters were investigated: personal and family history, clinical characteristics of the seizures - mainly spasms - and EEG findings, type of treatment, and outcome. Read More

View Article and Full-Text PDF

Delta oscillation underlies the interictal spike changes after repeated transcranial direct current stimulation in a rat model of chronic seizures.

Brain Stimul 2021 May 11. Epub 2021 May 11.

Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan. Electronic address:

Background: Transcranial direct current stimulation (tDCS) provides a noninvasive polarity-specific constant current to treat epilepsy, through a mechanism possibly involving excitability modulation and neural oscillation.

Objective: To determine whether EEG oscillations underlie the interictal spike changes after tDCS in rats with chronic spontaneous seizures.

Methods: Rats with kainic acid-induced spontaneous seizures were subjected to cathodal tDCS or sham stimulation for 5 consecutive days. Read More

View Article and Full-Text PDF

The neural processing of pitch accents in continuous speech.

Neuropsychologia 2021 May 11:107883. Epub 2021 May 11.

Department of Communication Science and Disorders, University of Pittsburgh, Pittsburgh, PA, USA. Electronic address:

Pitch accents are local pitch patterns that convey differences in word prominence and modulate the information structure of the discourse. Despite the importance to discourse in languages like English, neural processing of pitch accents remains understudied. The current study investigates the neural processing of pitch accents by native and non-native English speakers while they are listening to or ignoring 45 minutes of continuous, natural speech. Read More

View Article and Full-Text PDF

EEG microstate features for schizophrenia classification.

PLoS One 2021 14;16(5):e0251842. Epub 2021 May 14.

Department of Biomedical Science and Engineering (BMSE), Institute Integrated Technology (IIT), Gwangju Institute of Science and Technology (GIST), Cheomdan-gwagiro, Gwangju, South Korea.

Electroencephalography (EEG) microstate analysis is a method wherein spontaneous EEG activity is segmented at sub-second levels to analyze quasi-stable states. In particular, four archetype microstates and their features are known to reflect changes in brain state in neuropsychiatric diseases. However, previous studies have only reported differences in each microstate feature and have not determined whether microstate features are suitable for schizophrenia classification. Read More

View Article and Full-Text PDF

Functional hemispherectomy: can preoperative imaging predict outcome?

J Neurosurg Pediatr 2020 Jun 21;25(6). Epub 2020 Feb 21.

Division of Pediatric Neurosurgery, Department of Neurosurgery, Brain Institute, Miami Children's Hospital, Miami, Florida.

Objective: Although hemispherectomy is an effective treatment for children with intractable hemispheric epilepsy syndromes, as many as 40% of patients eventually develop seizure recurrence. The causes of seizure recurrence in these patients are incompletely understood. The authors sought to evaluate the efficacy of hemispherectomy at their center and determine whether contralateral MRI abnormalities can predict seizure recurrence. Read More

View Article and Full-Text PDF

Wheels Within Wheels: Theory and Practice of Epileptic Networks.

Epilepsy Curr 2021 May 14:15357597211015663. Epub 2021 May 14.

5798Columbia University, New York, NY, USA.

View Article and Full-Text PDF

Temporal lobe epilepsy with amygdala enlargement: A systematic review.

Acta Neurol Scand 2021 May 13. Epub 2021 May 13.

Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.

Temporal lobe epilepsy (TLE) with enlargement of the amygdala (AE) is a distinct clinical entity with contrasting clinical features from TLE with hippocampal sclerosis (HS). The objectives of this systematic analysis were to study the clinical characteristics and treatment outcome of people with TLE with AE. Pubmed, Embase, Cochrane, Web of Science, Scopus, and Medline were searched using the keywords amygdala enlargement, temporal lobe epilepsy, epilepsy, and seizure in November 2020. Read More

View Article and Full-Text PDF

Simplified frontal EEG in adults under veno-arterial extracorporeal membrane oxygenation.

Ann Intensive Care 2021 May 13;11(1):76. Epub 2021 May 13.

Laboratory for Vascular Translational Science, INSERM UMR1148, Team 6, Université de Paris, 75018, Paris, France.

Background: EEG-based prognostication studies in intensive care units often rely on a standard 21-electrode montage (EEG) requiring substantial human, technical, and financial resources. We here evaluate whether a simplified 4-frontal electrode montage (EEG) can detect EEG patterns associated with poor outcomes in adult patients under veno-arterial extracorporeal membrane oxygenation (VA-ECMO).

Methods: We conducted a reanalysis of EEG data from a prospective cohort on 118 adult patients under VA-ECMO, in whom EEG was performed on admission to intensive care. Read More

View Article and Full-Text PDF

Rapid Neural Representations of Personally Relevant Faces.

Cereb Cortex 2021 May 14. Epub 2021 May 14.

Centre for Integrative Neuroscience and Neurodynamics, School of Psychology and Clinical Language Sciences, The University of Reading, RG6 6AH Reading, UK.

The faces of those most personally relevant to us are our primary source of social information, making their timely perception a priority. Recent research indicates that gender, age and identity of faces can be decoded from EEG/MEG data within 100 ms. Yet, the time course and neural circuitry involved in representing the personal relevance of faces remain unknown. Read More

View Article and Full-Text PDF

Treatment of Epilepsy Associated with Common Chromosomal Developmental Diseases.

Open Life Sci 2020 28;15:21-29. Epub 2020 Feb 28.

"Victor Babes" National Institute of Pathology, Bucharest Romania.

Chromosomal diseases are heterogeneous conditions with complex phenotypes, which include also epileptic seizures. Each chromosomal syndrome has a range of specific characteristics regarding the type of seizures, EEG findings and specific response to antiepileptic drugs, significant in the context of the respective genetic etiology. Therefore, it is very important to know these particularities, in order to avoid an exacerbation of seizures or some side effects. Read More

View Article and Full-Text PDF
February 2020

Simultaneous Heart Rate Variability and Electroencephalographic Monitoring in Children in the Emergency Department.

J Child Adolesc Trauma 2021 Jun 10;14(2):165-175. Epub 2020 Jun 10.

Department of Emergency Medicine Professor at the Center for Policy and Research in Emergency Medicine, Oregon Health & Science University, Portland, OR USA.

Changes in heart rate variability (HRV) and electroencephalographic (EEG) background are promising tools for risk stratification and outcome prediction in children seen in the Emergency Department (ED). Novel monitoring technologies offer an opportunity for determining the clinical value of these physiologic variables, however, studies evaluating these measurements obtained in the Pediatric ED are sparse. The current study used a single center, prospective, observational cohort study of HRV and EEG as early predictors of outcome in children with acute trauma. Read More

View Article and Full-Text PDF

Localization of Epileptic Foci Based on Simultaneous EEG-fMRI Data.

Front Neurol 2021 27;12:645594. Epub 2021 Apr 27.

Control and Intelligent Processing Center of Excellence (CIPCE), School of Electrical and Computer Engineering, College of Engineering, University of Tehran, Tehran, Iran.

Combining functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) enables a non-invasive investigation of the human brain function and evaluation of the correlation of these two important modalities of brain activity. This paper explores recent reports on using advanced simultaneous EEG-fMRI methods proposed to map the regions and networks involved in focal epileptic seizure generation. One of the applications of EEG and fMRI combination as a valuable clinical approach is the pre-surgical evaluation of patients with epilepsy to map and localize the precise brain regions associated with epileptiform activity. Read More

View Article and Full-Text PDF

Foreign Language Learning as Cognitive Training to Prevent Old Age Disorders? Protocol of a Randomized Controlled Trial of Language Training vs. Musical Training and Social Interaction in Elderly With Subjective Cognitive Decline.

Front Aging Neurosci 2021 27;13:550180. Epub 2021 Apr 27.

English Linguistics and English as a Second Language, Bilingualism and Aging Lab, University of Groningen, Groningen, Netherlands.

: With aging comes a reduction of cognitive flexibility, which has been related to the development of late-life depression and progression of general cognitive decline. Several factors have been linked to attenuating such decline in cognitive flexibility, such as education, physical exercise and stimulating leisure activities. Speaking two or more languages has recently received abundant attention as another factor that may build up cognitive reserve, thereby limiting the functional implications of compromised cognition that accompany old age. Read More

View Article and Full-Text PDF

Comparing physiological responses during cognitive tests in virtual environments vs. in identical real-world environments.

Sci Rep 2021 May 13;11(1):10227. Epub 2021 May 13.

Department of Design and Environmental Analysis, College of Human Ecology, Cornell University, Ithaca, USA.

Immersive virtual environments (VEs) are increasingly used to evaluate human responses to design variables. VEs provide a tremendous capacity to isolate and readily adjust specific features of an architectural or product design. They also allow researchers to safely and effectively measure performance factors and physiological responses. Read More

View Article and Full-Text PDF

Predicting outcome following mild traumatic brain injury: protocol for the longitudinal, prospective, observational Concussion Recovery () cohort study.

BMJ Open 2021 May 13;11(5):e046460. Epub 2021 May 13.

Curtin Health Innovation Research Institute, Curtin University Faculty of Health Sciences, Bentley, Western Australia, Australia

Introduction: Mild traumatic brain injury (mTBI) is a complex injury with heterogeneous physical, cognitive, emotional and functional outcomes. Many who sustain mTBI recover within 2 weeks of injury; however, approximately 10%-20% of individuals experience mTBI symptoms beyond this 'typical' recovery timeframe, known as persistent post-concussion symptoms (PPCS). Despite increasing interest in PPCS, uncertainty remains regarding its prevalence in community-based populations and the extent to which poor recovery may be identified using early predictive markers. Read More

View Article and Full-Text PDF

Sleep and Epilepsy, Clinical Spectrum and Updated Review.

Sleep Med Clin 2021 Jun;16(2):389-408

UCLA Seizure Disorder Center, Brain Research Institute, David Geffen School of Medicine at UCLA, 10833 Le Conte Avenue, Los Angeles, CA 90095, USA.

Electroencephalogram (EEG) recording is essential in the evaluation of complex movement and behaviors during sleep, but in particular for differentiating epileptic versus nonepileptic events. In general, epileptiform discharges occur with greater density in the first few nonerapid eye movement cycles, and approximately 12% to 20% of seizures occur exclusively at night. This review examines the epilepsy types and syndromes whose presentation is strongly influenced by the sleep state, with an appraisal about the role that sleep plays in facilitating seizures, while deleaneatign EEG findings and clinical manifestation. Read More

View Article and Full-Text PDF

The impact of sub specialization within functional neurosurgery on patient outcomes in a comprehensive epilepsy center.

Clin Neurol Neurosurg 2021 Apr 20;205:106636. Epub 2021 Apr 20.

Department of Clinical Neurosciences, University of Calgary, Alberta, Canada T2N 1N4.

Background: One in three patients with epilepsy are medication-refractory and may benefit from investigations and operative treatment at a comprehensive epilepsy center. However, while these centers have capabilities for advanced seizure monitoring and surgical intervention, they are not required to have a functional neurosurgeon who is primarily focused in epilepsy surgery. Therefore, the objective of this study is to determine the impact of having a sub-specialized, epilepsy-focused functional neurosurgeon on patient outcomes. Read More

View Article and Full-Text PDF

Automated accurate emotion recognition system using rhythm-specific deep convolutional neural network technique with multi-channel EEG signals.

Comput Biol Med 2021 May 6;134:104428. Epub 2021 May 6.

Department of Electronics and Computer Engineering, Ngee Ann Polytechnic, Singapore; Department of Bioinformatics and Medical Engineering, Asia University, Taichung, Taiwan; International Research Organization for Advanced Science and Technology, Kumamoto University, Kumamoto, Japan.

Emotion is interpreted as a psycho-physiological process, and it is associated with personality, behavior, motivation, and character of a person. The objective of affective computing is to recognize different types of emotions for human-computer interaction (HCI) applications. The spatiotemporal brain electrical activity is measured using multi-channel electroencephalogram (EEG) signals. Read More

View Article and Full-Text PDF

Probabilistic learning vector quantization on manifold of symmetric positive definite matrices.

Neural Netw 2021 Apr 28;142:105-118. Epub 2021 Apr 28.

Institute of Marine Electronics and Intelligent Systems, Ocean College, Zhejiang University, The Key Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, The Engineering Research Center of Oceanic Sensing Technology and Equipment, Ministry of Education, Zhoushan, 316021, China. Electronic address:

In this paper, we develop a new classification method for manifold-valued data in the framework of probabilistic learning vector quantization. In many classification scenarios, the data can be naturally represented by symmetric positive definite matrices, which are inherently points that live on a curved Riemannian manifold. Due to the non-Euclidean geometry of Riemannian manifolds, traditional Euclidean machine learning algorithms yield poor results on such data. Read More

View Article and Full-Text PDF

Predicting outcome of patients with psychogenic nonepileptic seizures after diagnosis in an epilepsy monitoring unit.

Epilepsy Behav 2021 May 10;120:108004. Epub 2021 May 10.

Department of Clinical Neurological Sciences, Western University, London, Ontario, Canada; Psychology, Western University, London, Ontario, Canada.

Objective: To identify predictors of Psychogenic NonEpileptic Seizure (PNES) improvement and anti-seizure medication (ASM) discontinuation in patients with PNES only.

Methods: This is a retrospective study of a consecutively enrolled cohort of 271 patients diagnosed with PNES by video-EEG (vEEG) telemetry in our Epilepsy Monitoring Unit (EMU) between May 2000 and February 2010. Patients with any possibility of past or present comorbid epilepsy based on clinical, EEG, and neuroimaging, or less than one year of follow-up after discharge were excluded. Read More

View Article and Full-Text PDF

A ventromedial prefrontal dysrhythmia in obsessive-compulsive disorder is attenuated by nucleus accumbens deep brain stimulation.

Brain Stimul 2021 May 10. Epub 2021 May 10.

Laboratory for Clinical Neuroscience, Centre for Biomedical Technology, Universidad Politécnica de Madrid, Spain.

Background: Obsessive-compulsive disorder (OCD) has consistently been linked to abnormal frontostriatal activity. The electrophysiological disruption in this circuit, however, remains to be characterized.

Objective/hypothesispabst: The primary goal of this study was to investigate the neuronal synchronization in OCD patients. Read More

View Article and Full-Text PDF

Event-related potentials associated to N-back test performance in schizophrenia.

Prog Neuropsychopharmacol Biol Psychiatry 2021 May 10:110347. Epub 2021 May 10.

Psychiatry Department, School of Medicine, University of Valladolid, Av. Ramón y Cajal, 7, 47005 Valladolid, Spain; Psychiatry Service, Clinical University Hospital Valladolid, Spain. Electronic address:

Mapping of Event-Related Potentials (ERP) associated with auditory and visual odd-ball paradigms has shown consistent differences between healthy controls and schizophrenia patients. It may be hypothesized that higher task attentional/cognitive demand will result in larger differences in these paradigms, which may help understanding the substrates of cognitive deficits in this syndrome. To this aim, we performed an EEG study comparing the effects of increasing the attentional/cognitive load of an auditory N-back task on the Event-Related Potential in 50 subjects with schizophrenia (11 first episodes) and 35 healthy controls. Read More

View Article and Full-Text PDF

Abnormally abrupt transitions from sleep-to-wake in Huntington's disease sheep (Ovis aries) are revealed by automated analysis of sleep/wake transition dynamics.

PLoS One 2021 13;16(5):e0251767. Epub 2021 May 13.

Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom.

Sleep disturbance is a common and disruptive symptom of neurodegenerative diseases such as Alzheimer's and Huntington's disease (HD). In HD patients, sleep fragmentation appears at an early stage of disease, although features of the earliest sleep abnormalities in presymptomatic HD are not fully established. Here we used novel automated analysis of quantitative electroencephalography to study transitions between wake and non-rapid eye movement sleep in a sheep model of presymptomatic HD. Read More

View Article and Full-Text PDF

Enhanced neural tracking of the fundamental frequency of the voice.

IEEE Trans Biomed Eng 2021 May 13;PP. Epub 2021 May 13.

Objective: 'F0 tracking' is a novel method that investigates neural processing of the fundamental frequency of the voice (f0) in continuous speech. Using linear modelling, a feature that reflects the f0 of a presented speech stimulus is predicted from neural EEG responses. The correlation between the predicted and the 'actual' f0 feature is a measure for neural response strength. Read More

View Article and Full-Text PDF

Overt and covert attention shifts to emotional faces: Combining EEG, eye tracking, and a go/no-go paradigm.

Psychophysiology 2021 May 13:e13838. Epub 2021 May 13.

Affective Neuroscience and Psychophysiology, Georg-August-University Göttingen, Göttingen, Germany.

In everyday life, faces with emotional expressions quickly attract attention and eye movements. To study the neural mechanisms of such emotion-driven attention by means of event-related brain potentials (ERPs), tasks that employ covert shifts of attention are commonly used, in which participants need to inhibit natural eye movements towards stimuli. It remains, however, unclear how shifts of attention to emotional faces with and without eye movements differ from each other. Read More

View Article and Full-Text PDF

The interplay of resting and inhibitory control-related theta-band activity depends on age.

Hum Brain Mapp 2021 May 13. Epub 2021 May 13.

Faculty of Medicine, Cognitive Neurophysiology, Department of Child and Adolescent Psychiatry, TU Dresden, Dresden, Germany.

Resting-state neural activity plays an important role for cognitive control processes. Regarding response inhibition processes, an important facet of cognitive control, especially theta-band activity has been the focus of research. Theoretical considerations suggest that the interrelation of resting and task-related theta activity is subject to maturational effects. Read More

View Article and Full-Text PDF

Early onset epilepsy and sudden unexpected death in epilepsy with cardiac arrhythmia in mice carrying the early infantile epileptic encephalopathy 47 gain-of-function FHF1(FGF12) missense mutation.

Epilepsia 2021 May 13. Epub 2021 May 13.

Department of Biological Sciences, Hunter College of City University of New York, New York, New York, USA.

Objective: Fibroblast growth factor homologous factors (FHFs) are brain and cardiac sodium channel-binding proteins that modulate channel density and inactivation gating. A recurrent de novo gain-of-function missense mutation in the FHF1(FGF12) gene (p.Arg52His) is associated with early infantile epileptic encephalopathy 47 (EIEE47; Online Mendelian Inheritance in Man database 617166). Read More

View Article and Full-Text PDF

Aerobic fitness and the sleeping brain of adolescents-a pilot study.

Sleep Adv 2021 9;2(1):zpab005. Epub 2021 Apr 9.

Department of Psychiatry and Human Behavior, School of Medicine, University of California Irvine, Irvine, CA.

Study Objectives: Aerobic fitness (AF) and sleep are major determinants of health in adolescents and impact neurocognitive and psychological development. However, little is known about the interactions between AF and sleep during the developmental transition experienced across adolescence. This study aimed to consider the relationships between AF and habitual sleep patterns and sleep neurophysiology in healthy adolescents. Read More

View Article and Full-Text PDF