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https://www.readbyqxmd.com/read/29226709/enhanced-brain-network-activity-in-complex-movement-rhythms-a-simultaneous-fmri-eeg-study
#1
Bhim Mani Adhikari, Charles M Epstein, Mukesh Dhamala
Generating movement rhythms is known to involve a network of distributed brain regions associated with motor planning, control, execution, and perception of timing for the repertoire of motor actions. What brain areas are bound in the network and how the network activity is modulated by rhythmic complexity have not been completely explored. To contribute to answering these questions, we designed a study in which nine healthy participants performed simple to complex rhythmic finger movement tasks while undergoing simultaneous functional magnetic resonance imaging and electroencephalography (fMRI-EEG) recordings of their brain activity during the tasks and rest...
December 10, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/29226305/association-between-scalp-and-intracerebral-electroencephalographic-seizure-onset-patterns-a-study-in-different-lesional-pathological-substrates
#2
Hideaki Tanaka, Hui Ming Khoo, François Dubeau, Jean Gotman
OBJECTIVE: Our purpose was to determine the correlation between scalp electroencephalography (EEG) and intracerebral EEG (iEEG) seizure-onset patterns in patients with focal lesional epilepsy to determine whether scalp seizure-onset patterns can be specific to intracerebral seizure-onset patterns and to lesion type. METHODS: We retrospectively analyzed 61 patients with focal epilepsy and a structural magnetic resonance imaging (MRI)-visible lesion, who first underwent extensive scalp recordings and then iEEG studies (stereo-EEG) for presurgical evaluation, and who showed an iEEG seizure onset in the lesional/perilesional area...
December 11, 2017: Epilepsia
https://www.readbyqxmd.com/read/29225563/music-evoked-emotions-current-studies
#3
REVIEW
Hans-Eckhardt Schaefer
The present study is focused on a review of the current state of investigating music-evoked emotions experimentally, theoretically and with respect to their therapeutic potentials. After a concise historical overview and a schematic of the hearing mechanisms, experimental studies on music listeners and on music performers are discussed, starting with the presentation of characteristic musical stimuli and the basic features of tomographic imaging of emotional activation in the brain, such as functional magnetic resonance imaging (fMRI) and positron emission tomography (PET), which offer high spatial resolution in the millimeter range...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29225064/intracranial-high-%C3%AE-connectivity-distinguishes-wakefulness-from-sleep
#4
Ezequiel Mikulan, Eugenia Hesse, Lucas Sedeño, Tristán Bekinschtein, Mariano Sigman, María Del Carmen García, Walter Silva, Carlos Ciraolo, Adolfo M García, Agustín Ibáñez
Neural synchrony in the γ-band is considered a fundamental process in cortical computation and communication and it has also been proposed as a crucial correlate of consciousness. However, the latter claim remains inconclusive, mainly due to methodological limitations, such as the spectral constraints of scalp-level electroencephalographic recordings or volume-conduction confounds. Here, we circumvented these caveats by comparing γ-band connectivity between two global states of consciousness via intracranial electroencephalography (iEEG), which provides the most reliable measurements of high-frequency activity in the human brain...
December 7, 2017: NeuroImage
https://www.readbyqxmd.com/read/29224982/perceptual-learning-induces-changes-in-early-and-late-visual-evoked-potentials
#5
Maryam Ahmadi, Elizabeth A McDevitt, Michael A Silver, Sara C Mednick
Studies of visual cortical responses following visual perceptual learning (VPL) have produced diverse results, revealing neural changes in early and/or higher-level visual cortex as well as changes in regions responsible for higher cognitive processes such as attentional control. In this study, we investigated substrates of VPL in the human brain by recording visual evoked potentials with high-density electroencephalography (hdEEG) before (Session 1) and after (Session 2) training on a texture discrimination task (TDT), with two full nights of sleep between sessions...
December 7, 2017: Vision Research
https://www.readbyqxmd.com/read/29224250/multiple-autologous-bone-marrow-derived-cd271-mesenchymal-stem-cell-transplantation-overcomes-drug-resistant-epilepsy-in-children
#6
Olga Milczarek, Danuta Jarocha, Anna Starowicz-Filip, Stanislaw Kwiatkowski, Bogna Badyra, Marcin Majka
There is a need among patients suffering from drug-resistant epilepsy (DRE) for more efficient and less toxic treatments. The objective of the present study was to assess the safety, feasibility, and potential efficacy of autologous bone marrow cell transplantation in pediatric patients with DRE. Two females and two males (11 months to 6 years) were enrolled and underwent a combined therapy consisting of autologous bone marrow nucleated cells (BMNCs) transplantation (intrathecal: 0.5 × 109 ; intravenous: 0...
December 10, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29223708/comparison-of-neuroplastic-responses-to-cathodal-transcranial-direct-current-stimulation-and-continuous-theta-burst-stimulation-in-subacute-stroke
#7
Pierre Nicolo, Cécile Magnin, Elena Pedrazzini, Gijs Plomp, Anaïs Mottaz, Armin Schnider, Adrian G Guggisberg
OBJECTIVE: To investigate the effects of cathodal transcranial direct current stimulation (tDCS) and continuous theta burst stimulation (cTBS) on neural network connectivity and motor recovery in individuals with subacute stroke. DESIGN: Double-blinded, randomized, placebo-controlled study. SETTING: Stroke subjects recruited through a university hospital rehabilitation program. PARTICIPANTS: Stroke inpatients (N=41; mean age 65y, range 28-85; mean weeks poststroke 5, range 2-10) with resultant paresis in the upper extremity (mean Fugl-Meyer score 14, range 3-48)...
December 6, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29221942/neurostimulant-use-is-associated-with-improved-survival-in-comatose-patients-after-cardiac-arrest-regardless-of-electroencephalographic-substrate
#8
Alexis Steinberg, Jon C Rittenberger, Maria Baldwin, John Faro, Alexandra Urban, Naoir Zaher, Clifton W Callaway, Jonathan Elmer
AIM: Identify EEG patterns that predict or preclude favorable response in comatose post-arrest patients receiving neurostimulants. METHODS: We examined a retrospective cohort of consecutive electroencephalography (EEG)-monitored comatose post-arrest patients. We classified the last day of EEG recording before neurostimulant administration based on continuity (continuous/discontinuous), reactivity (yes/no) and malignant patterns (periodic discharges, suppression burst, myoclonic status epilepticus or seizures; yes/no)...
December 5, 2017: Resuscitation
https://www.readbyqxmd.com/read/29218705/randomized-controlled-study-comparing-the-efficacy-of-rapid-and-slow-withdrawal-of-antiepileptic-drugs-during-long-term-video-eeg-monitoring
#9
Shambhu Kumar, Bhargavi Ramanujam, P S Chandra, Deepa Dash, Santosh Mehta, Sharma Anubha, Renjith Appukutan, Manit Kumar Rana, Manjari Tripathi
OBJECTIVE: Antiepileptic drugs (AEDs) are routinely withdrawn during long-term video-electroencephalography (EEG) monitoring (LTM), to record sufficient number of seizures. The efficacy of rapid and slow AED taper has never been compared in a randomized control trial (RCT), which was the objective of this study. METHODS: In this open-label RCT, patients aged 2-80 years with drug-resistant epilepsy (DRE) were randomly assigned (1:1) to rapid and slow AED taper groups...
December 7, 2017: Epilepsia
https://www.readbyqxmd.com/read/29218615/advanced-ct-for-diagnosis-of-seizure-related-stroke-mimics
#10
Friederike Austein, Monika Huhndorf, Johannes Meyne, Helmut Laufs, Olav Jansen, Thomas Lindner
BACKGROUND AND PURPOSE: It is assumed that up to 30 % of clinically diagnosed acute ischaemic strokes (AIS) are actually stroke mimics (SM). Our aim was to evaluate the usefulness of advanced CT including CT angiography (CTA) and CT perfusion (CTP) findings when distinguishing AIS from seizure-related SM. METHODS: Over a 22-month period data were gathered of patients who presented to our stroke centre with AIS-like symptoms and were examined immediately with an advanced CT, analysed and evaluated by two experienced neuroradiologists who preferred SM rather than AIS...
December 7, 2017: European Radiology
https://www.readbyqxmd.com/read/29216788/insights-into-teaching-a-complex-skill-threshold-concepts-and-troublesome-knowledge-in-electroencephalography-eeg
#11
Jeremy J Moeller, Tim Fawns
BACKGROUND: Threshold concepts (TCs) are defined as ideas within a discipline that are often conceptually difficult ("troublesome"), but when learned, transform a learner's understanding. Electroencephalography (EEG) has been recognized as a conceptually difficult field in neurology, and a study of threshold concepts in EEG may provide insights into how it is taught and learned. METHODS: Semi-structured interviews were performed with 12 EEG experts in the US and Canada...
December 7, 2017: Medical Teacher
https://www.readbyqxmd.com/read/29215804/cognitive-function-and-neuropsychological-comorbidities-in-children-with-newly-diagnosed-idiopathic-epilepsy
#12
Seung Yun Lee, Jang Ho Park, Sin Jae Park, Yangho Kim, Kyung Yeon Lee
BACKGROUND: In this study, we aimed to identify cognitive function and neuropsychological comorbidities in children with newly diagnosed idiopathic epilepsy. METHODS: We retrospectively reviewed the records of 97 antiepileptic drug-naïve children (9.7 ± 2.9 years; 54 males and 43 females) with newly diagnosed idiopathic epilepsy, all of whom underwent a neuropsychological battery. The battery consisted of the Korean Wechsler Intelligence Scale, Attention Deficit Hyperactivity Disorder (ADHD) Rating Scale, ADHD Diagnostic System, Children's Depression Inventory, and State-Trait Anxiety Inventory for Children...
January 15, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29214978/characterization-of-dynamic-changes-of-current-source-localization-based-on-spatiotemporal-fmri-constrained-eeg-source-imaging
#13
Thinh Nguyen, Thomas Potter, Robert Grossman, Yingchun Zhang
OBJECTIVE: Neuroimaging has been employed as a promising approach to advance our understanding of brain networks in both basic and clinical neuroscience. Electroencephalography (EEG) and functional Magnetic Resonance Imaging (fMRI) represent two neuroimaging modalities with complementary features; EEG has high temporal resolution and low spatial resolution while fMRI has high spatial resolution and low temporal resolution. Multimodal EEG inverse methods have attempted to capitalize on these properties but have been subjected to localization error...
December 7, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29214865/automatic-seizure-detection-based-on-morphological-features-using-one-dimensional-local-binary-pattern-on-long-term-eeg
#14
P P Muhammed Shanir, Kashif Ahmad Khan, Yusuf Uzzaman Khan, Omar Farooq, Hojjat Adeli
Epileptic neurological disorder of the brain is widely diagnosed using the electroencephalography (EEG) technique. EEG signals are nonstationary in nature and show abnormal neural activity during the ictal period. Seizures can be identified by analyzing and obtaining features of EEG signal that can detect these abnormal activities. The present work proposes a novel morphological feature extraction technique based on the local binary pattern (LBP) operator. LBP provides a unique decimal value to a sample point by weighing the binary outcomes after thresholding the neighboring samples with the present sample point...
December 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29214651/electroencephalography-and-behavior-patterns-during-experimental-status-epilepticus
#15
Ewa Lewczuk, Suchitra Joshi, John Williamson, Mouna Penmetsa, Sarah Shan, Jaideep Kapur
OBJECTIVE: To characterize the evolution of behavioral and electrographic seizures in an experimental electrical stimulation-based model of status epilepticus (SE) in C57Bl/6 mice, and to relate SE to various outcomes, including death and epileptogenesis. METHODS: SE was induced by continuous hippocampal stimulation and was evaluated by review of electroencephalographic recordings, spectral display, and behavior. RESULTS: Seizures were initially locked to the electrical trains but later became independent of them...
December 6, 2017: Epilepsia
https://www.readbyqxmd.com/read/29213487/traumatic-brain-injury-an-eeg-point-of-view
#16
REVIEW
Jéssica Natuline Ianof, Renato Anghinah
Traumatic brain injury (TBI) is a silent epidemic. Mild traumatic brain injury (mTBI) causes brain injury that results in electrophysiologic abnormalities visible on electroencephalography (EEG) recordings. The purpose of this brief review was to discuss the importance of EEG findings in traumatic brain injury. Relevant articles published during the 1996-2016 period were retrieved from Medline (PubMed). The keywords were in English and included "traumatic brain injury", "EEG" and "quantitative EEG". We found 460 articles, analyzed 52 and selected 13 articles...
January 2017: Dementia & Neuropsychologia
https://www.readbyqxmd.com/read/29213090/evaluation-of-short-interval-cortical-inhibition-and-intracortical-facilitation-from-the-dorsolateral-prefrontal-cortex-in-patients-with-schizophrenia
#17
Yoshihiro Noda, Mera S Barr, Reza Zomorrodi, Robin F H Cash, Faranak Farzan, Tarek K Rajji, Robert Chen, Zafiris J Daskalakis, Daniel M Blumberger
GABAergic and glutamatergic dysfunction in the dorsolateral prefrontal cortex (DLPFC) are thought to be the core pathophysiological mechanisms of schizophrenia. Recently, we have established a method to index these functions from the DLPFC using the paired transcranial magnetic stimulation (TMS) paradigms of short interval intracortical inhibition (SICI) and facilitation (ICF) combined with electroencephalography (EEG). In this study, we aimed to evaluate neurophysiological indicators related to GABAA and glutamate receptor-mediated functions respectively from the DLPFC in patients with schizophrenia using these paradigms, compared to healthy controls...
December 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29212538/a-pilot-investigation-of-audiovisual-processing-and-multisensory-integration-in-patients-with-inherited-retinal-dystrophies
#18
Mark H Myers, Alessandro Iannaccone, Gavin M Bidelman
BACKGROUND: In this study, we examined audiovisual (AV) processing in normal and visually impaired individuals who exhibit partial loss of vision due to inherited retinal dystrophies (IRDs). METHODS: Two groups were analyzed for this pilot study: Group 1 was composed of IRD participants: two with autosomal dominant retinitis pigmentosa (RP), two with autosomal recessive cone-rod dystrophy (CORD), and two with the related complex disorder, Bardet-Biedl syndrome (BBS); Group 2 was composed of 15 non-IRD participants (controls)...
December 7, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29212461/widespread-enlarged-perivascular-spaces-associated-with-dementia-and-focal-brain-dysfunction-case-report
#19
Daisuke Taniguchi, Hideki Shimura, Masao Watanabe, Nobutaka Hattori, Takao Urabe
BACKGROUND: Enlarged perivascular spaces (PVS) are common magnetic resonance imaging (MRI) findings, whereas widespread enlarged PVS are extremely rare. Although most patients with widespread enlarged PVS remain asymptomatic, some develop neurological dysfunctions; however, it remains unclear whether these are the consequence of widespread enlarged PVS. CASE PRESENTATION: A 64-year-old female patient developed consciousness disturbance, cognitive dysfunctions, fluent aphasia, agraphia, acalculia, and left-right disorientation after suffering from bronchopneumonia...
December 7, 2017: BMC Neurology
https://www.readbyqxmd.com/read/29209157/the-effect-of-head-model-simplification-on-beamformer-source-localization
#20
Frank Neugebauer, Gabriel Möddel, Stefan Rampp, Martin Burger, Carsten H Wolters
Beamformers are a widely-used tool in brain analysis with magnetoencephalography (MEG) and electroencephalography (EEG). For the construction of the beamformer filters realistic head volume conductor modeling is necessary for accurately computing the EEG and MEG leadfields, i.e., for solving the EEG and MEG forward problem. In this work, we investigate the influence of including realistic head tissue compartments into a finite element method (FEM) model on the beamformer's localization ability. Specifically, we investigate the effect of including cerebrospinal fluid, gray matter, and white matter distinction, as well as segmenting the skull bone into compacta and spongiosa, and modeling white matter anisotropy...
2017: Frontiers in Neuroscience
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