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Quantitative eeg

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https://www.readbyqxmd.com/read/28634598/previously-unrecognized-behavioral-phenotype-in-gaucher-disease-type-3
#1
Magy Abdelwahab, Michael Potegal, Elsa G Shapiro, Igor Nestrasil
OBJECTIVE: To provide a comprehensive description of abnormal behaviors in patients with Gaucher disease type 3 (GD3) and relate these behaviors to demographic, neurodevelopmental, and neurologic characteristics. METHODS: Thirty-four Egyptian patients with GD3 (mean age of 7.9 years) were enrolled in the study. They were selected based on parent report and/or physician observation of one or more abnormal behaviors documented in 2 settings and by 2 different individuals and/or by video recording...
June 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28627505/monitoring-alert-and-drowsy-states-by-modeling-eeg-source-nonstationarity
#2
Sheng-Hsiou Hsu, Tzyy-Ping Jung
As a human brain performs various cognitive functions within ever-changing environments, states of the brain characterized by recorded brain activities such as electroencephalogram (EEG) are inevitably nonstationary. The challenges of analyzing the nonstationary EEG signals include finding neurocognitive sources that underlie different brain states and using EEG data to quantitatively assess the state changes. Approach. This study hypothesizes that brain activities under different states, e.g. levels of alertness, can be modeled as distinct compositions of statistically independent sources using independent component analysis (ICA)...
June 19, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28622651/application-of-electroencephalographic-techniques-to-the-study-of-visual-impact-of-renewable-energies
#3
M D Grima Murcia, Francisco Sánchez Ferrer, Jennifer Sorinas, J M Ferrandez, Eduardo Fernandez
Much is currently being studied on the negative visual impact associated to the installation of large wind turbines or photovoltaic farms. However, methodologies for quantitatively assessing landscape impact are scarce. In this work we used electroencephalographic (EEG) recordings to investigate the brain activity of 14 human volunteers when looking at the same landscapes with and without wind turbines, solar panels and nuclear power plants. Our results showed no significant differences for landscapes with solar power systems or without them, and the same happened for wind turbines, what was in agreement with their subjective scores...
June 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28602596/brain-sodium-mri-in-human-epilepsy-disturbances-of-ionic-homeostasis-reflect-the-organization-of-pathological-regions
#4
Ben Ridley, Angela Marchi, Jonathan Wirsich, Elisabeth Soulier, Sylviane Confort-Gouny, Lothar Schad, Fabrice Bartolomei, Jean-Philippe Ranjeva, Maxime Guye, Wafaa Zaaraoui
In light of technical advancements supporting exploration of MR signals other than (1)H, sodium ((23)Na) has received attention as a marker of ionic homeostasis and cell viability. Here, we evaluate for the first time the possibility that (23)Na-MRI is sensitive to pathological processes occurring in human epilepsy. A normative sample of 27 controls was used to normalize regions of interest (ROIs) from 1424 unique brain locales on quantitative (23)Na-MRI and high-resolution (1)H-MPRAGE images. ROIs were based on intracerebral electrodes in ten patients undergoing epileptic network mapping...
June 7, 2017: NeuroImage
https://www.readbyqxmd.com/read/28600921/an-exploration-of-the-spectrum-of-peri-ictal-mri-change-a-comprehensive-literature-review
#5
REVIEW
Jennifer A Williams, Peter Bede, Colin P Doherty
PURPOSE: The aim of this review was to identify published studies in the literature relating to ictal induced MRI change and to identify certain common themes, practical points for clinicians and areas for future research. METHODS: We identified 96 articles that satisfied our inclusion criteria yielding 575 cases. All articles were analysed; number of subjects, spectrum of MRI and EEG change, aetiology, and follow-up (both clinical and imaging) were noted. RESULTS: The most frequent imaging changes were restricted diffusion, T2-hyperintensity and reduced ADC values...
May 31, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28600632/dynamic-complexity-measures-and-entropy-paths-for-modelling-and-comparison-of-evolution-of-patients-with-drug-resistant-epileptic-encephalopathy-syndromes-drees
#6
Ricardo Zavala-Yoe, Ricardo A Ramirez-Mendoza
Epileptic encephalopathies (EE) is a term coined by the International League Against Epilepsy (ILAE) to refer to a group of epilepsies in which the ictal and interictal abnormalities may contribute to progressive cerebral dysfunction. Among them, two affect mainly children and are very difficult to deal with, Doose and Lennox-Gastaut syndromes, (DS and LGS, respectively). So far (Zavala-Yoe et al., J Integr Neurosci 15(2):205-223, 2015a and works of ours there), quantitative analysis of single case studies of EE have been performed...
June 9, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28600253/robust-granger-analysis-in-lp-norm-space-for-directed-eeg-network-analysis
#7
PeiYang Li, Xiaoye Huang, Fali Li, Xurui Wang, Weiwei Zhou, Huan Liu, Teng Ma, Tao Zhang, Daqing Guo, Dezhong Yao, Peng Xu
Granger analysis (GA) is widely used to construct directed brain networks based on various physiological recordings, such as functional magnetic resonance imaging (fMRI), electroencephalogram (EEG), etc. However, in real applications, EEGs are inevitably contaminated by unexpected artifacts that may distort the networks because of the L2 norm structure utilized in GAs when estimating directed links. Compared with the L2 norm, the Lp (p ≤ 1) norm can compress outlier effects. In this study, an extended GA is constructed by applying the Lp (p ≤ 1) norm strategy to estimate robust causalities under outlier conditions, and a feasible iteration procedure is utilized to solve the new GA model...
June 5, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28599608/a-brain-electrical-activity-eeg-based-biomarker-of-functional-impairment-in-traumatic-head-injury-a-multisite-validation-trial
#8
Daniel Hanley, Leslie S Prichep, Neeraj Badjatia, Jeff Bazarian, RIchard P Chiacchierini, Kenneth C Curley, John S Garrett, Elizabeth B Jones, Rosanne Naunheim, Brian J O'Neil, John O'Neill, Wright David, J Stephen Huff
The potential clinical utility of a novel quantitative EEG-based Brain Function Index (BFI) as a measure of the presence and severity of functional brain injury was studied as part of an independent prospective validation trial. The BFI was derived using EEG features associated with functional brain impairment reflecting current consensus on the physiology of concussive injury. 720 adult patients (18-85 years) evaluated within 72 hours of sustaining a closed head injury were enrolled at 11 US Emergency Departments...
June 9, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28581274/comparison-of-electroencephalography-eeg-coherence-between-major-depressive-disorder-mdd-without-comorbidity-and-mdd-comorbid-with-internet-gaming-disorder
#9
Joohyung Youh, Ji Sun Hong, Doug Hyun Han, Un Sun Chung, Kyoung Joon Min, Young Sik Lee, Sun Mi Kim
Internet gaming disorder (IGD) has many comorbid psychiatric problems including major depressive disorder (MDD). In the present study, we compared the neurobiological differences between MDD without comorbidity (MDD-only) and MDD comorbid with IGD (MDD+IGD) by analyzing the quantitative electroencephalogram (QEEG) findings. We recruited 14 male MDD+IGD (mean age, 20.0 ± 5.9 years) and 15 male MDD-only (mean age, 20.3 ± 5.5 years) patients. The electroencephalography (EEG) coherences were measured using a 21-channel digital EEG system and computed to assess synchrony in the frequency ranges of alpha (7...
July 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28577262/altered-eeg-spectral-power-during-rest-and-cognitive-performance-a-comparison-of-preterm-born-adolescents-to-adolescents-with-adhd
#10
Anna-Sophie Rommel, Sarah-Naomi James, Gráinne McLoughlin, Daniel Brandeis, Tobias Banaschewski, Philip Asherson, Jonna Kuntsi
Preterm birth has been associated with an increased risk for ADHD-like behavioural symptoms and cognitive impairments. However, direct comparisons across ADHD and preterm-born samples on neurophysiological measures are limited. The aim of this analysis was to test whether quantitative EEG (QEEG) measures identify differences or similarities in preterm-born adolescents, compared to term-born adolescents with and without ADHD, during resting-state and cognitive task conditions. We directly compared QEEG activity between 186 preterm-born adolescents, 69 term-born adolescents with ADHD and 135 term-born control adolescents during an eyes-open resting-state condition (EO), which previously discriminated between the adolescents with ADHD and controls, and during a cued continuous performance task (CPT-OX)...
June 2, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28559953/quantitative-eeg-evaluation-for-performance-level-analysis-of-professional-female-soccer-players
#11
Kittichai Tharawadeepimuk, Yodchanan Wongsawat
Quantitative electroencephalography (QEEG) was used to investigate the brain activity of Thai professional female soccer team players who exhibit high performance. The QEEGs of 29 players were recorded three times: twice before a competition (once a week) and a week after a competition. The results of the brain topographic map (absolute power) in the alpha frequency band and the brain connectivity (coherence) in the delta frequency bands represented their anxiety and decision-making levels, respectively. These phenomena occurred in the brain activities of the athletes, which could be used to predict their performances during the competition...
June 2017: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/28557820/features-of-resting-state-eeg-theta-coherence-in-somatic-symptom-disorder-compared-to-major-depressive-disorder-a-pilot-study
#12
Jaeyoung Ahn, Doug Hyun Han, Ji Sun Hong, Kyoung Joon Min, Young Sik Lee, Bong-Jin Hahm, Sun Mi Kim
OBJECTIVE: Somatic symptom disorder (SSD) often co-occurs with major depressive disorder (MDD). Both conditions share common psychobiological and biobehavioral characteristics, but little is known about differential patterns in brain function. In this study, we compared resting-state functional brain connectivity between SSD and MDD using quantitative electroencephalography (QEEG). METHODS: Fifteen patients with SSD (SSD group), 15 patients with MDD (MDD group), and 15 healthy volunteers (HC group) participated in this study...
May 27, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28550254/precuneus-failures-in-subjects-of-the-psen1-e280a-family-at-risk-of-developing-alzheimer-s-disease-detected-using-quantitative-electroencephalography
#13
John Fredy Ochoa, Joan Francesc Alonso, Jon Edinson Duque, Carlos Andrés Tobón, Ana Baena, Francisco Lopera, Miguel Angel Mañanas, Alher Mauricio Hernández
BACKGROUND: Presenilin-1 (PSEN1) mutations are the most common cause of familial early onset Alzheimer's disease (AD). The PSEN1 E280A (E280A) mutation has an autosomal dominant inheritance and is involved in the production of amyloid-β. The largest family group of carriers with E280A mutation is found in Antioquia, Colombia. The study of mutation carriers provides a unique opportunity to identify brain changes in stages previous to AD. Electroencephalography (EEG) is a low cost and minimally invasiveness technique that enables the following of brain changes in AD...
May 26, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28548564/eating-habits-and-food-additive-intakes-are-associated-with-emotional-states-based-on-eeg-and-hrv-in-healthy-korean-children-and-adolescents
#14
Jin Young Kim, Hye Lim Kang, Dae-Keun Kim, Seung Wan Kang, Yoo Kyoung Park
PURPOSE: Recent study suggests that psychological issues and eating habits are closely related. In this study, we aimed to find the association between eating habits and intakes of artificial sweeteners with emotional states of schoolchildren using quantitatively analyzing objective biosignals. METHODS: The study was conducted at the National Standard Reference Data Center for Korean EEG as a cross-sectional study. Three hundred eighteen healthy children who have not been diagnosed with neurologic or psychiatric disorders were evaluated (168 girls and 150 boys; mean age of 11...
May 26, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28544889/juvenile-myoclonic-epilepsy-as-a-spectrum-disorder-a-focused-review
#15
REVIEW
Betül Baykan, Peter Wolf
In consequence of newer research juvenile myoclonic epilepsy (JME) is no longer seen as a homogeneous disease. The causes of the existing variance are only partially known yet. We discuss to what extent the phenotypical spectrum of this polygenetically determined disorder expresses genetically defined endophenotypes, or is due to mere quantitative differences in the expression of the core phenotype. Of the three common seizure types of JME, myoclonic, generalized tonic-clonic and absences, absences also occur independently and are strong candidates for an endophenotype...
July 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28531810/a-novel-scheme-for-the-validation-of-an-automated-classification-method-for-epileptic-spikes-by-comparison-with-multiple-observers
#16
Niraj K Sharma, Carlos Pedreira, Maria Centeno, Umair J Chaudhary, Tim Wehner, Lucas G S França, Tinonkorn Yadee, Teresa Murta, Marco Leite, Sjoerd B Vos, Sebastien Ourselin, Beate Diehl, Louis Lemieux
OBJECTIVE: To validate the application of an automated neuronal spike classification algorithm, Wave_clus (WC), on interictal epileptiform discharges (IED) obtained from human intracranial EEG (icEEG) data. METHOD: Five 10-min segments of icEEG recorded in 5 patients were used. WC and three expert EEG reviewers independently classified one hundred IED events into IED classes or non-IEDs. First, we determined whether WC-human agreement variability falls within inter-reviewer agreement variability by calculating the variation of information for each classifier pair and quantifying the overlap between all WC-reviewer and all reviewer-reviewer pairs...
July 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28512438/are-neurodynamic-organizations-a-fundamental-property-of-teamwork
#17
Ronald H Stevens, Trysha L Galloway
When performing a task it is important for teams to optimize their strategies and actions to maximize value and avoid the cost of surprise. The decisions teams make sometimes have unintended consequences and they must then reorganize their thinking, roles and/or configuration into corrective structures more appropriate for the situation. In this study we ask: What are the neurodynamic properties of these reorganizations and how do they relate to the moment-by-moment, and longer, performance-outcomes of teams?...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28512066/use-of-electroencephalography-brain-computer-interface-systems-as-a-rehabilitative-approach-for-upper-limb-function-after-a-stroke-a-systematic-review
#18
REVIEW
Esther Monge-Pereira, Jaime Ibañez-Pereda, Isabel M Alguacil-Diego, Jose I Serrano, María P Spottorno-Rubio, Francisco Molina-Rueda
BACKGROUND: Brain-computer interface (BCI) systems have been suggested as a promising tool for neurorehabilitation. However, to date, there is a lack of homogeneous findings. Furthermore, no systematic reviews have analyzed the degree of validation of these interventions for upper limb (UL) motor rehabilitation poststroke. OBJECTIVES: The study aims were to compile all available studies that assess an UL intervention based on an electroencephalography (EEG) BCI system in stroke; to analyze the methodological quality of the studies retrieved; and to determine the effects of these interventions on the improvement of motor abilities...
May 13, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28504334/advances-in-functional-brain-imaging-technology-and-developmental-neuro-psychology-their-applications-in-the-jungian-analytic-domain
#19
Leon Petchkovsky
Analytical psychology shares with many other psychotherapies the important task of repairing the consequences of developmental trauma. The majority of analytic patients come from compromised early developmental backgrounds: they may have experienced neglect, abuse, or failures of empathic resonance from their carers. Functional brain imagery techniques including Quantitative Electroencephalogram (QEEG), and functional Magnetic Resonance Imagery (fMRI), allow us to track mental processes in ways beyond verbal reportage and introspection...
June 2017: Journal of Analytical Psychology
https://www.readbyqxmd.com/read/28503211/delta-rhythmicity-is-a-reliable-eeg-biomarker-in-angelman-syndrome-a-parallel-mouse-and-human-analysis
#20
Michael S Sidorov, Gina M Deck, Marjan Dolatshahi, Ronald L Thibert, Lynne M Bird, Catherine J Chu, Benjamin D Philpot
BACKGROUND: Clinicians have qualitatively described rhythmic delta activity as a prominent EEG abnormality in individuals with Angelman syndrome, but this phenotype has yet to be rigorously quantified in the clinical population or validated in a preclinical model. Here, we sought to quantitatively measure delta rhythmicity and evaluate its fidelity as a biomarker. METHODS: We quantified delta oscillations in mouse and human using parallel spectral analysis methods and measured regional, state-specific, and developmental changes in delta rhythms in a patient population...
2017: Journal of Neurodevelopmental Disorders
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