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https://www.readbyqxmd.com/read/29329819/the-effect-of-continuous-positive-airway-pressure-on-spectral-encephalogram-characteristics-in-stroke-patients-with-obstructive-sleep-apnea
#1
Hisham Alshaer, Aditya Pandya, Igor Zivanovic, Carolina Gonzaga Carvalho, Clodagh Ryan
OBJECTIVES: To evaluate if treatment with continuous positive airway pressure (CPAP) compared to usual care in stroke patients with obstructive sleep apnea (OSA) over one month reduces delta and alpha oscillations on quantitative electroencephalography (EEG) in association with improvements in cognitive or functional outcomes. METHODS: Spectral EEG analysis was performed in patients with subacute stroke and OSA randomized to usual care or CPAP treatment from a previous study...
January 9, 2018: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29324886/changes-in-network-connectivity-during-motor-imagery-and-execution
#2
Yun Kwan Kim, Eunhee Park, Ahee Lee, Chang-Hwan Im, Yun-Hee Kim
BACKGROUND: Recent studies of functional or effective connectivity in the brain have reported that motor-related brain regions were activated during motor execution and motor imagery, but the relationship between motor and cognitive areas has not yet been completely understood. The objectives of our study were to analyze the effective connectivity between motor and cognitive networks in order to define network dynamics during motor execution and motor imagery in healthy individuals. Second, we analyzed the differences in effective connectivity between correct and incorrect responses during motor execution and imagery using dynamic causal modeling (DCM) of electroencephalography (EEG) data...
2018: PloS One
https://www.readbyqxmd.com/read/29247485/an-eeg-index-of-sensorimotor-interhemispheric-coupling-after-unilateral-stroke-clinical-and-neurophysiological-study
#3
Floriana Pichiorri, Manuela Petti, Stefano Caschera, Laura Astolfi, Febo Cincotti, Donatella Mattia
Brain connectivity has been employed to investigate on post-stroke recovery mechanisms and assess the effect of specific rehabilitation interventions. Changes in interhemispheric coupling after stroke have been related to the extent of damage in the corticospinal tract (CST) and thus, to motor impairment. In this study we aim at defining an index of interhemispheric connectivity derived from electroencephalography (EEG), correlated with CST integrity and clinical impairment. Thirty sub-acute stroke patients underwent clinical and neurophysiological evaluation: CST integrity was assessed by Transcranial Magnetic Stimulation and high-density EEG was recorded at rest...
December 15, 2017: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29238296/the-effects-of-rtms-combined-with-motor-training-on-functional-connectivity-in-alpha-frequency-band
#4
Jing-Na Jin, Xin Wang, Ying Li, Fang Jin, Zhi-Peng Liu, Tao Yin
It has recently been reported that repetitive transcranial magnetic stimulation combined with motor training (rTMS-MT) could improve motor function in post-stroke patients. However, the effects of rTMS-MT on cortical function using functional connectivity and graph theoretical analysis remain unclear. Ten healthy subjects were recruited to receive rTMS immediately before application of MT. Low frequency rTMS was delivered to the dominant hemisphere and non-dominant hand performed MT over 14 days. The reaction time of Nine-Hole Peg Test and electroencephalography (EEG) in resting condition with eyes closed were recorded before and after rTMS-MT...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29230011/pairing-sound-with-vagus-nerve-stimulation-modulates-cortical-synchrony-and-phase-coherence-in-tinnitus-an-exploratory-retrospective-study
#5
Sven Vanneste, Jeffrey Martin, Robert L Rennaker, Michael P Kilgard
Recent research has shown that vagus nerve stimulation (VNS) paired with tones or with rehabilitative training can help patients to achieve reductions in tinnitus perception or to expedite motor rehabilitation after suffering an ischemic stroke. The rationale behind this treatment is that VNS paired with experience can drive neural plasticity in a controlled and therapeutic direction. Since previous studies observed that gamma activity in the auditory cortex is correlated with tinnitus loudness, we assessed resting-state source-localized EEG before and after one to three months of VNS-tone pairing in chronic tinnitus patients...
December 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29223708/comparison-of-neuroplastic-responses-to-cathodal-transcranial-direct-current-stimulation-and-continuous-theta-burst-stimulation-in-subacute-stroke
#6
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/29201197/calcitonin-gene-related-peptide-has-protective-effect-on-brain-injury-induced-by-heat-stroke-in-rats
#7
Cheng-Xiang Lu, Ting Qiu, Zhi-Feng Liu, Lei Su, Biao Cheng
Heat stroke often leads to multiple organ dysfunction syndrome (MODS) with a neurological morbidity of 30%. Current studies suggested that pathophysiological responses to heat stroke may be due to a systemic inflammatory response syndrome and a series of peptidergic nerve reactions. The mechanisms underlying the high neurological morbidity in heat stroke have remained largely elusive. In recent years, calcitonin gene-related peptide (CGRP) has been considered to have a positive role in central nervous system injury...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29171011/stroke-like-migraine-attacks-after-radiation-therapy-a-misnomer
#8
Emily Peien Fan, Gabriel Heiber, Elizabeth E Gerard, Stephan Schuele
OBJECTIVE: To understand the frequency of electrographic and clinical seizures in patients with stroke-like migraine attacks after radiation therapy (SMART), and determine whether SMART warrants comprehensive electroencephalographic (EEG) monitoring and aggressive seizure management. METHODS: We searched our magnetic resonance brain imaging report database for all patients between January 2013 and December 2015 for suspected SMART syndrome. Clinical inclusion criteria were further applied as follows: inpatient adults (>18 years of age) with history of cranial radiation presenting with acute neurologic deficits as primary admission reason who lacked evidence of recurrent or new brain malignancy, stroke, or infectious agents in cerebrospinal fluid...
November 23, 2017: Epilepsia
https://www.readbyqxmd.com/read/29161898/delta-brush-pattern-is-not-unique-to-nmdar-encephalitis-evaluation-of-two-independent-long-term-eeg-cohorts
#9
Betul Baykan, Ozlem Gungor Tuncer, Ebru Nur Vanli-Yavuz, Leyla Baysal Kirac, Gokcen Gundogdu, Nerses Bebek, Candan Gurses, Ebru Altindag, Erdem Tuzun
PURPOSE: Although its specificity has not previously been investigated in other cohorts, delta brush pattern (DBP) is increasingly reported in the EEGs of patients with anti- N-methyl-d-aspartate receptor (NMDAR) encephalitis. METHODS: We aimed to investigate the DBP in the EEGs of 2 cohorts; patients with change in consciousness for various causes monitored in the intensive care unit (ICU) (n = 106) and patients with mesial temporal lobe epilepsy (MTLE) with or without antineuronal antibodies (n = 76)...
February 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29147661/an-eeg-tool-for-monitoring-patient-engagement-during-stroke-rehabilitation-a-feasibility-study
#10
Gadi Bartur, Katherin Joubran, Sara Peleg-Shani, Jean-Jacques Vatine, Goded Shahaf
Objective: Patient engagement is of major significance in neural rehabilitation. We developed a real-time EEG marker for attention, the Brain Engagement Index (BEI). In this work we investigate the relation between the BEI and temporary functional change during a rehabilitation session. Methods: First part: 13 unimpaired controls underwent BEI monitoring during motor exercise of varying levels of difficulty. Second part: 18 subacute stroke patients underwent standard motor rehabilitation with and without use of real-time BEI feedback regarding their level of engagement...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29147145/long-range-temporal-correlations-of-broadband-eeg-oscillations-for-depressed-subjects-following-different-hemispheric-cerebral-infarction
#11
Dongzhe Hou, Chunfang Wang, Yuanyuan Chen, Weijie Wang, Jingang Du
Abnormal long-range temporal correlation (LRTC) in EEG oscillation has been observed in several brain pathologies and mental disorders. This study examined the relationship between the LRTC of broadband EEG oscillation and depression following cerebral infarction with different hemispheric lesions to provide a novel insight into such depressive disorders. Resting EEGs of 16 channels in 18 depressed (9 left and 9 right lesions) and 21 non-depressed (11 left and 10 right lesions) subjects following cerebral infarction and 19 healthy control subjects were analysed by means of detrended fluctuation analysis, a quantitative measurement of LRTC...
December 2017: Cognitive Neurodynamics
https://www.readbyqxmd.com/read/29143207/contribution-of-eeg-in-transient-neurological-deficits
#12
Pierre Lozeron, Nadine Carole Tcheumeni, Sahar Turki, Hélène Amiel, Elodie Meppiel, Sana Masmoudi, Caroline Roos, Isabelle Crassard, Patrick Plaisance, Houria Benbetka, Jean-Pierre Guichard, Emmanuel Houdart, Hélène Baudoin, Nathalie Kubis
Identification of stroke mimics and 'chameleons' among transient neurological deficits (TND) is critical. Diagnostic workup consists of a brain imaging study, for a vascular disease or a brain tumour and EEG, for epileptiform discharges. The precise role of EEG in this diagnostic workup has, however, never been clearly delineated. However, this could be crucial in cases of atypical or incomplete presentation with consequences on disease management and treatment. We analysed the EEG patterns on 95 consecutive patients referred for an EEG within 7 days of a TND with diagnostic uncertainty...
November 15, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/29132379/effects-of-somatosensory-electrical-stimulation-on-motor-function-and-cortical-oscillations
#13
Adelyn P Tu-Chan, Nikhilesh Natraj, Jason Godlove, Gary Abrams, Karunesh Ganguly
BACKGROUND: Few patients recover full hand dexterity after an acquired brain injury such as stroke. Repetitive somatosensory electrical stimulation (SES) is a promising method to promote recovery of hand function. However, studies using SES have largely focused on gross motor function; it remains unclear if it can modulate distal hand functions such as finger individuation. OBJECTIVE: The specific goal of this study was to monitor the effects of SES on individuation as well as on cortical oscillations measured using EEG, with the additional goal of identifying neurophysiological biomarkers...
November 13, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29130824/longitudinal-structural-and-functional-differences-between-proportional-and-poor-motor-recovery-after-stroke
#14
Adrian G Guggisberg, Pierre Nicolo, Leonardo G Cohen, Armin Schnider, Ethan R Buch
BACKGROUND: Evolution of motor function during the first months after stroke is stereotypically bifurcated, consisting of either recovery to about 70% of maximum possible improvement ("proportional recovery, PROP") or in little to no improvement ("poor recovery, POOR"). There is currently no evidence that any rehabilitation treatment will prevent POOR and favor PROP. OBJECTIVE: To perform a longitudinal and multimodal assessment of functional and structural changes in brain organization associated with PROP...
November 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29119540/discrimination-of-stroke-related-mild-cognitive-impairment-and-vascular-dementia-using-eeg-signal-analysis
#15
Noor Kamal Al-Qazzaz, Sawal Hamid Bin Mohd Ali, Siti Anom Ahmad, Mohd Shabiul Islam, Javier Escudero
Stroke survivors are more prone to developing cognitive impairment and dementia. Dementia detection is a challenge for supporting personalized healthcare. This study analyzes the electroencephalogram (EEG) background activity of 5 vascular dementia (VaD) patients, 15 stroke-related patients with mild cognitive impairment (MCI), and 15 control healthy subjects during a working memory (WM) task. The objective of this study is twofold. First, it aims to enhance the discrimination of VaD, stroke-related MCI patients, and control subjects using fuzzy neighborhood preserving analysis with QR-decomposition (FNPAQR); second, it aims to extract and investigate the spectral features that characterize the post-stroke dementia patients compared to the control subjects...
January 2018: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29112703/reply-defining-a-functional-network-homeostasis-after-stroke-eeg-based-approach-is-complementary-to-functional-mri
#16
Mohit H Adhikari, Gustavo Deco, Maurizio Corbetta
No abstract text is available yet for this article.
November 3, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29112697/defining-a-functional-network-homeostasis-after-stroke-eeg-based-approach-is-complementary-to-functional-mri
#17
Pietro Caliandro, Giuseppe Reale, Fabrizio Vecchio, Chiara Iacovelli, Francesca Miraglia, Gianvito Masi, Paolo Maria Rossini
No abstract text is available yet for this article.
November 3, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29106402/selective-neuronal-lapses-precede-human-cognitive-lapses-following-sleep-deprivation
#18
Yuval Nir, Thomas Andrillon, Amit Marmelshtein, Nanthia Suthana, Chiara Cirelli, Giulio Tononi, Itzhak Fried
Sleep deprivation is a major source of morbidity with widespread health effects, including increased risk of hypertension, diabetes, obesity, heart attack, and stroke. Moreover, sleep deprivation brings about vehicle accidents and medical errors and is therefore an urgent topic of investigation. During sleep deprivation, homeostatic and circadian processes interact to build up sleep pressure, which results in slow behavioral performance (cognitive lapses) typically attributed to attentional thalamic and frontoparietal circuits, but the underlying mechanisms remain unclear...
November 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29063076/restless-legs-syndrome-secondary-to-pontine-infarction-clinical-analysis-of-five-cases
#19
Hou-Zhen Tuo, Ze-Long Tian, Yi-Nong Cui, Xiao-Yang Ma, Chun-Ling Xu, Hong-Yan Bi, Li-Yan Zhang, Yong-Bo Zhang, Wei-Dong Le, William Ondo
OBJECTIVE: Pontine infarction is a common type of stroke in the cerebral deep structures, resulting from occlusion of small penetrating arteries, may manifest as hemi-paralysis, hemi-sensory deficit, ataxia, vertigo, and bulbar dysfunction, but patients presenting with restless legs syndrome (RLS) are extremely rare. Herein, we reported five cases with RLS as a major manifestation of pontine infarction. METHODS: Five cases of pontine infarction related RLS were collected from July 2013 to February 2016...
September 2017: Chronic Diseases and Translational Medicine
https://www.readbyqxmd.com/read/29060863/asymmetry-of-hemispheric-interdependences-in-the-early-hours-following-unilateral-stroke-an-electrophysiological-study-in-rats
#20
Xiaoli Guo, Wenqing Wu, Shanbao Tong
Disturbance of interhemispheric interactions after stroke has been widely reported. However, the dynamic change in the hyperacute stage of stroke remains to be elucidated. In this study, interhemispheric interactions and brain asymmetry in the early hours after infarction were investigated in animals from the aspect of nonlinear interdependences using bilateral EEG recordings. Both the right-to-left and the left-to-right hemispheric interdependences were impaired after unilateral stroke, with a significant decrease in the first two hours and a low level in the following twenty-two hours...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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