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Amplitude-integrated EEG

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https://www.readbyqxmd.com/read/29426848/sleep-endophenotypes-of-schizophrenia-slow-waves-and-sleep-spindles-in-unaffected-first-degree-relatives
#1
Armando D'Agostino, Anna Castelnovo, Simone Cavallotti, Cecilia Casetta, Matteo Marcatili, Orsola Gambini, Mariapaola Canevini, Giulio Tononi, Brady Riedner, Fabio Ferrarelli, Simone Sarasso
Sleep spindles and slow waves are the main brain oscillations occurring in non-REM sleep. Several lines of evidence suggest that spindles are initiated within the thalamus, whereas slow waves are generated and modulated in the cortex. A decrease in sleep spindle activity has been described in Schizophrenia (SCZ), including chronic, early course, and early onset patients. In contrast, slow waves have been inconsistently found to be reduced in SCZ, possibly due to confounds like duration of illness and antipsychotic medication exposure...
February 9, 2018: NPJ Schizophrenia
https://www.readbyqxmd.com/read/29421831/amplitude-integrated-eeg-and-cerebral-near-infrared-spectroscopy-in-cooled-asphyxiated-infants
#2
C K Niezen, A F Bos, D A Sival, L C Meiners, H J Ter Horst
OBJECTIVE:  To assess the predictive value of amplitude-integrated electroencephalography EEG (aEEG) and near-infrared spectroscopy (NIRS) during therapeutic hypothermia. PATIENTS AND METHODS:  We studied 39 cooled, asphyxiated infants. We assessed aEEG and calculated mean regional cerebral oxygen saturation (rcSO2) during and after treatment. At 30 months, we performed a neurological examination and administered the Bayley Scales of Infant and Toddler Development, 3rd edition...
February 8, 2018: American Journal of Perinatology
https://www.readbyqxmd.com/read/29421272/native-language-status-of-the-listener-modulates-the-neural-integration-of-speech-and-iconic-gestures-in-clear-and-adverse-listening-conditions
#3
Linda Drijvers, Asli Özyürek
Native listeners neurally integrate iconic gestures with speech, which can enhance degraded speech comprehension. However, it is unknown how non-native listeners neurally integrate speech and gestures, as they might process visual semantic context differently than natives. We recorded EEG while native and highly-proficient non-native listeners watched videos of an actress uttering an action verb in clear or degraded speech, accompanied by a matching ('to drive'+driving gesture) or mismatching gesture ('to drink'+mixing gesture)...
January 29, 2018: Brain and Language
https://www.readbyqxmd.com/read/29391596/superficial-slow-rhythms-integrate-cortical-processing-in-humans
#4
Milan Halgren, Daniel Fabó, István Ulbert, Joseph R Madsen, Lorand Erőss, Werner K Doyle, Orrin Devinsky, Donald Schomer, Sydney S Cash, Eric Halgren
The neocortex is composed of six anatomically and physiologically specialized layers. It has been proposed that integration of activity across cortical areas is mediated anatomically by associative connections terminating in superficial layers, and physiologically by slow cortical rhythms. However, the means through which neocortical anatomy and physiology interact to coordinate neural activity remains obscure. Using laminar microelectrode arrays in 19 human participants, we found that most EEG activity is below 10-Hz (delta/theta) and generated by superficial cortical layers during both wakefulness and sleep...
February 1, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29363844/neurophysiology-underlying-influence-of-stimulus-reliability-on-audiovisual-integration
#5
Hannah Shatzer, Stanley Shen, Jess R Kerlin, Mark A Pitt, Antoine J Shahin
We tested the predictions of the Dynamic Reweighting Model (DRM) of audiovisual (AV) speech integration, which posits that spectrotemporally reliable (informative) AV speech stimuli induce a reweighting of processing from low-level to high-level auditory networks. This reweighting decreases sensitivity to acoustic onsets and in turn increases tolerance to AV onset asynchronies (AVOA). EEG was recorded while subjects watched videos of a speaker uttering tri-syllabic nonwords that varied in spectrotemporal reliability and asynchrony of the visual and auditory input...
January 24, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29352657/electroencephalographic-monitoring-for-seizure-identification-and-prognosis-in-term-neonates
#6
REVIEW
Shavonne L Massey, Frances E Jensen, Nicholas S Abend
Seizures represent a manifestation of neurological disease in the neonatal period. Historically, neonatal seizures were identified by direct clinical observation. However, since most seizures are electroencephalographic (EEG)-only (subclinical, non-convulsive) and clinical manifestations may be subtle, many clinicians place increasing importance on EEG data including conventional EEG or amplitude-integrated EEG to identify seizures in neonates. Beyond seizure identification, the EEG is a robust source of information about brain function that can be useful for neurobehavioral prognostication in some neonates...
January 15, 2018: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29304417/spectral-and-temporal-electroencephalography-measures-reveal-distinct-neural-networks-for-the-acquisition-consolidation-and-interlimb-transfer-of-motor-skills-in-healthy-young-adults
#7
M P Veldman, N M Maurits, M A M Nijland, N E Wolters, J C Mizelle, T Hortobágyi
OBJECTIVE: Plasticity of the central nervous system likely underlies motor learning. It is however unclear, whether plasticity in cortical motor networks is motor learning stage-, activity-, or connectivity-dependent. METHODS: From electroencephalography (EEG) data, we quantified effective connectivity by the phase slope index (PSI), neuronal activity by event-related desynchronization, and sensorimotor integration by N30 during the stages of visuomotor skill acquisition, consolidation, and interlimb transfer...
December 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29248497/electrophysiological-evidence-for-audio-visuo-lingual-speech-integration
#8
Avril Treille, Coriandre Vilain, Jean-Luc Schwartz, Thomas Hueber, Marc Sato
Recent neurophysiological studies demonstrate that audio-visual speech integration partly operates through temporal expectations and speech-specific predictions. From these results, one common view is that the binding of auditory and visual, lipread, speech cues relies on their joint probability and prior associative audio-visual experience. The present EEG study examined whether visual tongue movements integrate with relevant speech sounds, despite little associative audio-visual experience between the two modalities...
December 14, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29233180/distinct-cytokine-patterns-may-regulate-the-severity-of-neonatal-asphyxia-an-observational-study
#9
Anna Bajnok, László Berta, Csaba Orbán, Gábor Veres, Dénes Zádori, Hajnalka Barta, Ünőke Méder, László Vécsei, Tivadar Tulassay, Miklós Szabó, Gergely Toldi
BACKGROUND: Neuroinflammation and a systemic inflammatory reaction are important features of perinatal asphyxia. Neuroinflammation may have dual aspects being a hindrance, but also a significant help in the recovery of the CNS. We aimed to assess intracellular cytokine levels of T-lymphocytes and plasma cytokine levels in moderate and severe asphyxia in order to identify players of the inflammatory response that may influence patient outcome. METHODS: We analyzed the data of 28 term neonates requiring moderate systemic hypothermia in a single-center observational study...
December 12, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29199490/the-role-of-electroencephalogram-in-neonatal-seizure-detection
#10
Francesco Pisani, Elena Pavlidis
The role of EEG in neonatal seizure detection is well-established, being the multichannel video-EEG the gold standard. However, in the clinical practice often amplitude integrated EEG (aEEG) is used, in order to overcome the difficulties related to EEG use. Areas covered: An overview regarding neonatal seizures, current tools used to detect these (multichannel EEG versus aEEG) with respective strenghts and limitations, and some tools that can implement the use of multichannel EEG in the NICU. Expert commentary: Multichannel video-EEG is still a gold standard for seizure detection...
February 2018: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/29197598/effect-of-sedation-on-quantitative-electroencephalography-after-cardiac-arrest
#11
Callie M Drohan, Alessandra I Cardi, Jon C Rittenberger, Alexandra Popescu, Clifton W Callaway, Maria E Baldwin, Jonathan Elmer
BACKGROUND: Electroencephalography (EEG) has clinical and prognostic importance after cardiac arrest (CA). Recently, interest in quantitative EEG (qEEG) analysis has grown. The qualitative effects of sedation on EEG are well known, but potentially confounding effects of sedatives on qEEG after anoxic injury are poorly characterized. We hypothesize that sedation increases suppression ratio (SR) and decreases alpha/delta ratio (ADR) and amplitude-integrated EEG (aEEG), and that the magnitude of sedation effects will be associated with outcome...
November 29, 2017: Resuscitation
https://www.readbyqxmd.com/read/29191479/the-spatiotemporal-pattern-of-pure-tone-processing-a-single-trial-eeg-fmri-study
#12
Qiang Li, Guangyuan Liu, Dongtao Wei, Jing Guo, Guangjie Yuan, Shifu Wu
Although considerable research has been published on pure tone processing, its spatiotemporal pattern is not well understood. Specifically, the link between neural activity in the auditory pathway measured by functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) markers of pure tone processing in the P1, N1, P2, and N4 components is not well established. In this study, we used single-trial EEG-fMRI as a multi-modal fusion approach to integrate concurrently acquired EEG and fMRI data, in order to understand the spatial and temporal aspects of the pure tone processing pathway...
November 27, 2017: NeuroImage
https://www.readbyqxmd.com/read/29184494/aging-effect-on-audiovisual-integrative-processing-in-spatial-discrimination-task
#13
Zhi Zou, Bolton K H Chau, Kin-Hung Ting, Chetwyn C H Chan
Multisensory integration is an essential process that people employ daily, from conversing in social gatherings to navigating the nearby environment. The aim of this study was to investigate the impact of aging on modulating multisensory integrative processes using event-related potential (ERP), and the validity of the study was improved by including "noise" in the contrast conditions. Older and younger participants were involved in perceiving visual and/or auditory stimuli that contained spatial information...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29131743/integration-and-temporal-processing-of-asynchronous-audiovisual-speech
#14
David M Simon, Mark T Wallace
Multisensory integration of visual mouth movements with auditory speech is known to offer substantial perceptual benefits, particularly under challenging (i.e., noisy) acoustic conditions. Previous work characterizing this process has found that ERPs to auditory speech are of shorter latency and smaller magnitude in the presence of visual speech. We sought to determine the dependency of these effects on the temporal relationship between the auditory and visual speech streams using EEG. We found that reductions in ERP latency and suppression of ERP amplitude are maximal when the visual signal precedes the auditory signal by a small interval and that increasing amounts of asynchrony reduce these effects in a continuous manner...
November 13, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29067311/mnemonic-strategy-training-of-the-elderly-at-risk-for-dementia-enhances-integration-of-information-processing-via-cross-frequency-coupling
#15
Stavros I Dimitriadis, Ioannis Tarnanas, Mark Wiederhold, Brenda Wiederhold, Magda Tsolaki, Elgar Fleisch
INTRODUCTION: We sought to identify whether intensive 10-week mobile health mnemonic strategy training (MST) could shift the resting-state brain network more toward cortical-level integration, which has recently been proven to reflect the reorganization of the brain networks compensating the cognitive decline. METHODS: One hundred fifty-eight patients with mild cognitive impairment (MCI) were selected and participated in 10-week training lasting 90 min/d of memory training...
November 2016: Alzheimer's & Dementia: Translational Research & Clinical Interventions
https://www.readbyqxmd.com/read/29053622/sleep-disturbances-in-newborns
#16
REVIEW
Daphna Yasova Barbeau, Michael D Weiss
The purpose of this review is to serve as an introduction to understanding sleep in the fetus, the preterm neonate and the term neonate. Sleep appears to have numerous important roles, particularly in the consolidation of new information. The sleep cycle changes over time, neonates spend the most time in active sleep and have a progressive shortening of active sleep and lengthening of quiet sleep. Additionally, the sleep cycle is disrupted by many things including disease state and environment, and the amplitude integrated EEG can be a useful tool in evaluating sleep, and sleep disturbances, in neonates...
October 20, 2017: Children
https://www.readbyqxmd.com/read/29048405/cooling-in-neonatal-hypoxic-ischemic-encephalopathy-practices-and-opinions-on-minimum-standards-in-the-state-of-california
#17
C J Wusthoff, C L Clark, H C Glass, T K Shimotake, J Schulman, S L Bonifacio
OBJECTIVE: Although hospitals increasingly offer therapeutic hypothermia (TH), there is variable implementation of related services. We assessed current practices and opinions regarding what services should be required of centers providing TH in California. STUDY DESIGN: We surveyed neonatal intensive care unit physicians statewide regarding practices and opinions about services related to TH. RESULTS: Of the 50 participating centers (47% response rate), 66% offer TH...
January 2018: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28961316/reduced-infancy-and-childhood-epilepsy-following-hypothermia-treated-neonatal-encephalopathy
#18
Xun Liu, Sally Jary, Frances Cowan, Marianne Thoresen
OBJECTIVE: To investigate what proportion of a regional cohort of cooled infants with neonatal encephalopathy develop epilepsy (determined by the International League Against Epilepsy [ILAE] definition and the number of antiepileptic drugs [AEDs]) up to 8 years of age. METHODS: From 2006-2013, 151 infants with perinatal asphyxia underwent 72 h cooling. Clinical and amplitude-integrated electroencepalography (aEEG) with single-channel EEG-verified neonatal seizures were treated with AEDs...
November 2017: Epilepsia
https://www.readbyqxmd.com/read/28930990/application-of-an-amplitude-integrated-eeg-monitor-cerebral-function-monitor-to-neonates
#19
Nora Bruns, Susanne Blumenthal, Irmgard Meyer, Susanne Klose-Verschuur, Ursula Felderhoff-Müser, Hanna Müller
Amplitude-integrated EEG (aEEG) is an easily accessible technique to monitor the electrocortical activity in preterm and term infants in neonatal intensive care units (NICUs). This method was first used to monitor newborns after asphyxia, providing information about future neurological outcomes. The aEEG is also helpful to select newborns who benefit from cooling. The aEEG monitoring of preterm infants is becoming more widespread, as various studies have shown that neurodevelopmental outcome is related to early aEEG tracings...
September 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28926828/are-all-amplitude-integrated-electroencephalogram-systems-equal
#20
Tobias Werther, Monika Olischar, Gunnar Naulaers, Philipp Deindl, Katrin Klebermass-Schrehof, Nathan Stevenson
BACKGROUND: Filter and peak detection algorithms implemented in amplitude-integrated electroencephalogram (aEEG) systems are not standardized. New aEEG systems are continuously enriching the market and clinicians are faced with different aEEG devices whose tracings may vary. OBJECTIVES: The aim of this work was to determine the role of different aEEG systems on quantitative measurements of the aEEG. METHODS: In this observational study, a single-channel aEEG recording (Olympic CFM 6000) with corresponding EEG signal was obtained from 32 infants at a gestational age of 36-44 weeks...
2017: Neonatology
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