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https://www.readbyqxmd.com/read/28227402/simplified-eeg-inverse-solution-for-bci-real-time-implementation
#1
L Duque-Munoz, F Vargas, J D Lopez, L Duque-Munoz, F Vargas, J D Lopez, F Vargas, L Duque-Munoz, J D Lopez
EEG brain imaging has become a promising approach in Brain-computer interface applications. However, accurate reconstruction of active regions and computational burden are still open issues. In this paper, we propose to use a simplified forward model that includes the reduction of the cortical dipoles based on Brodmann areas together with state-of-the-art EEG brain imaging techniques. With this approach the well known Beamformers and Greedy Search inverse solutions become feasible for real-time implementation, while guaranteeing lower localization error than previous approaches used in BCI...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28202333/easy-methods-to-make-the-neuronavigated-targeting-of-dlpfc-accurate-and-routinely-accessible-for-rtms
#2
Benjamin Pommier, François Vassal, Claire Boutet, Sophie Jeannin, Roland Peyron, Isabelle Faillenot
OBJECTIVES: Dorsolateral prefrontal cortex (DLPFC) is the main stimulation target for rTMS treatment of depression. DLPFC is located in the middle frontal gyrus and corresponds to the lateral part of Brodmann Areas 9 and 46. Current methods to locate the DLPFC are either based on head landmarks that are inaccurate, or based on MRI-neuronavigation. Neuronavigated-methods are based either on standardized stereotactic coordinates translated to the individual patient or on brain landmarks requiring neuroanatomical skills for their identification...
February 12, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28163143/on-the-detection-of-high-frequency-correlations-in-resting-state-fmri
#3
Cameron Trapp, Kishore Vakamudi, Stefan Posse
Current studies of resting-state connectivity rely on coherent signal fluctuations at frequencies below 0.1 Hz, however, recent studies using high-speed fMRI have shown that fluctuations above 0.5 Hz may exist. This study replicates the feasibility of measuring high frequency (HF) correlations in six healthy controls and a patient with a brain tumor while analyzing non-physiological signal sources via simulation. Resting-state data were acquired using a high-speed multi-slab echo-volumar imaging pulse sequence with 136 ms temporal resolution...
February 3, 2017: NeuroImage
https://www.readbyqxmd.com/read/28128223/neutrophil-gelatinase-associated-lipocalin-ngal-fails-as-an-early-predictor-of-contrast-induced-nephropathy-in-chronic-kidney-disease-anti-ci-aki-study
#4
Werner Ribitsch, Gernot Schilcher, Franz Quehenberger, Stefan Pilz, Rupert H Portugaller, Martini Truschnig-Wilders, Robert Zweiker, Marianne Brodmann, Philipp Stiegler, Alexander R Rosenkranz, John W Pickering, Joerg H Horina
: The aim of the study was to evaluate the diagnostic accuracy of urinary neutrophil gelatinase- associated lipocalin (uNGAL) in patients with chronic kidney disease (CKD) as an early biomarker for contrast induced acute kidney injury (CI-AKI) and to investigate whether patients with an uNGAL increase might benefit from an additional intravenous volume expansion with regard to CI-AKI-incidence. We performed a prospective randomized controlled trial in 617 CKD-patients undergoing intra-arterial angiography...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28126062/should-broca-s-area-include-brodmann-area-47
#5
Alfredo Ardila, Byron Bernal, Monica Rosselli
BACKGROUND: Understanding brain organization of speech production has been a principal goal of neuroscience. Historically, brain speech production has been associated with so-called Broca’s area (Brodmann area –BA- 44 and 45), however, modern neuroimaging developments suggest speech production is associated with networks rather than with areas. The purpose of this paper was to analyze the connectivity of BA47 ( pars orbitalis) in relation to language . METHOD: A meta-analysis was conducted to assess the language network in which BA47 is involved...
2017: Psicothema
https://www.readbyqxmd.com/read/28116447/localized-n20-component-of-somatosensory-evoked-magnetic-fields-in-frontoparietal-brain-tumor-patients-using-noise-normalized-approaches
#6
Nor Safira Elaina, Aamir Saeed Malik, Wafaa Khazaal Shams, Nasreen Badruddin, Jafri Malin Abdullah, Mohammad Faruque Reza
PURPOSE: To localize sensorimotor cortical activation in 10 patients with frontoparietal tumors using quantitative magnetoencephalography (MEG) with noise-normalized approaches. MATERIAL AND METHODS: Somatosensory evoked magnetic fields (SEFs) were elicited in 10 patients with somatosensory tumors and in 10 control participants using electrical stimulation of the median nerve via the right and left wrists. We localized the N20m component of the SEFs using dynamic statistical parametric mapping (dSPM) and standardized low-resolution brain electromagnetic tomography (sLORETA) combined with 3D magnetic resonance imaging (MRI)...
January 23, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28113481/voxel-based-diagnosis-of-alzheimer-s-disease-using-classifier-ensembles
#7
Ruben Armananzas, Martina Iglesias, Dinora A Morales, Lidia Alonso-Nanclares
Functional magnetic resonance imaging (fMRI) is one of the most promising non-invasive techniques for early Alzheimer's disease (AD) diagnosis. In this paper, we explore the application of different machine learning techniques to the classification of fMRI data for this purpose. The functional images were firstly preprocessed using the statistical parametric mapping toolbox to output individual maps of statistically activated voxels. A fast filter was applied afterwards to select voxels commonly activated across demented and non-demented groups...
March 4, 2016: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28107684/non-invasive-brain-stimulation-targeting-the-right-fusiform-gyrus-selectively-increases-working-memory-for-faces
#8
Tad T Brunyé, Joseph M Moran, Amanda Holmes, Caroline R Mahoney, Holly A Taylor
The human extrastriate cortex contains a region critically involved in face detection and memory, the right fusiform gyrus. The present study evaluated whether transcranial direct current stimulation (tDCS) targeting this anatomical region would selectively influence memory for faces versus non-face objects (houses). Anodal tDCS targeted the right fusiform gyrus (Brodmann's Area 37), with the anode at electrode site PO10, and cathode at FP2. Two stimulation conditions were compared in a repeated-measures design: 0...
January 17, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/28106123/visual-area-v5-hmt-contributes-to-perception-of-tactile-motion-direction-a-tms-study
#9
Tomohiro Amemiya, Brianna Beck, Vincent Walsh, Hiroaki Gomi, Patrick Haggard
Human imaging studies have reported activations associated with tactile motion perception in visual motion area V5/hMT+, primary somatosensory cortex (SI) and posterior parietal cortex (PPC; Brodmann areas 7/40). However, such studies cannot establish whether these areas are causally involved in tactile motion perception. We delivered double-pulse transcranial magnetic stimulation (TMS) while moving a single tactile point across the fingertip, and used signal detection theory to quantify perceptual sensitivity to motion direction...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105729/whole-genome-grey-and-white-matter-dna-methylation-profiles-in-dorsolateral-prefrontal-cortex
#10
Jose Vicente Sanchez-Mut, Holger Heyn, Enrique Vidal, Raúl Delgado-Morales, Sebastian Moran, Sergi Sayols, Juan Sandoval, Isidre Ferrer, Manel Esteller, Johannes Gräff
The brain's neocortex is anatomically organized into grey and white matter, which are mainly composed by neuronal and glial cells, respectively. The neocortex can be further divided in different Brodmann areas according to their cytoarchitectural organization, which are associated with distinct cortical functions. There is increasing evidence that brain development and function are governed by epigenetic processes, yet their contribution to the functional organization of the neocortex remains incompletely understood...
January 20, 2017: Synapse
https://www.readbyqxmd.com/read/28104503/invasive-candida-krusei-infection-and-candida-vasculitis-of-a-leg-ulcer-in-an-immunocompetent-patient-a-case-report
#11
Philipp Jud, Thomas Valentin, Sigrid Regauer, Thomas Gary, Gerald Hackl, Peter Rief, Marianne Brodmann, Franz Hafner
A 71year old female Caucasian farmer without any known immunosuppression presented with a painful ulcer of her right lower leg after a trauma caused by a wood billet. There was no response to empirical antibacterial treatment. An ulcer biopsy showed an invasive Candida infection of the soft tissue and leucocytoclastic vasculitis. Voriconazole treatment was followed by wound healing. Invasive Candida infection and localized Candida vasculitis represent a rare cause of persisting leg ulcers. The similar clinical picture of chronic venous leg ulcers might blur the true cause and refractory cases should therefore promptly be processed by histopathological diagnostics...
January 16, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28101616/successful-retrieval-of-an-embolized-vascular-closure-device-angio-seal-%C3%A2-after-peripheral-angioplasty
#12
Philipp Jud, Rupert Portugaller, Dennis Bohlsen, Thomas Gary, Marianne Brodmann, Gerald Hackl, Franz Hafner
A 55-year-old male with peripheral arterial disease underwent angioplasty of the right lower limb arteries via antegrade femoral access. Angio-Seal(®) closure device was used to treat the puncture site, whereby the intravascular sealing anchor accidentally embolized into the malleolar region of the right posterior tibial artery. Successful retrieval of the anchor was accomplished by a SpiderFX embolic protection device. This technique may be a useful approach to retrieve embolized foreign bodies via endovascular access...
January 18, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28100246/genetic-effect-of-interleukin-1-beta-c-511t-polymorphism-on-the-structural-covariance-network-and-white-matter-integrity-in-alzheimer-s-disease
#13
Chi-Wei Huang, Shih-Wei Hsu, Shih-Jen Tsai, Nai-Ching Chen, Mu-En Liu, Chen-Chang Lee, Shu-Hua Huang, Weng-Neng Chang, Ya-Ting Chang, Wan-Chen Tsai, Chiung-Chih Chang
BACKGROUND: Inflammatory processes play a pivotal role in the degenerative process of Alzheimer's disease. In humans, a biallelic (C/T) polymorphism in the promoter region (position-511) (rs16944) of the interleukin-1 beta gene has been significantly associated with differences in the secretory capacity of interleukin-1 beta. In this study, we investigated whether this functional polymorphism mediates the brain networks in patients with Alzheimer's disease. METHODS: We enrolled a total of 135 patients with Alzheimer's disease (65 males, 70 females), and investigated their gray matter structural covariance networks using 3D T1 magnetic resonance imaging and their white matter macro-structural integrities using fractional anisotropy...
January 18, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28081226/regional-homogeneity-changes-in-nicotine-addicts-by-resting-state-fmri
#14
Hongbo Chen, Shaofeng Mo
OBJECTIVE: To reveal the brain functional changes of nicotine addicts compared with those of non-smokers and explore the objective biomarker for nicotine dependence evaluation. METHODS: A total of 14 smokers and 11 non-smoking controls were recruited for this study. Resting-state functional magnetic resonance imaging and regional homogeneity (ReHo) were applied in the neural activity analysis. Two-sample t-test was performed to examine the voxel-wise difference between the smokers and the controls...
2017: PloS One
https://www.readbyqxmd.com/read/28045465/methylomic-profiling-of-cortex-samples-from-completed-suicide-cases-implicates-a-role-for-psors1c3-in-major-depression-and-suicide
#15
T M Murphy, B Crawford, E L Dempster, E Hannon, J Burrage, G Turecki, Z Kaminsky, J Mill
Major depressive disorder (MDD) represents a major social and economic health issue and constitutes a major risk factor for suicide. The molecular pathology of suicidal depression remains poorly understood, although it has been hypothesised that regulatory genomic processes are involved in the pathology of both MDD and suicidality. In this study, genome-wide patterns of DNA methylation were assessed in depressed suicide completers (n=20) and compared with non-psychiatric, sudden-death controls (n=20) using tissue from two cortical brain regions (Brodmann Area 11 (BA11) and Brodmann Area 25 (BA25))...
January 3, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28044021/individual-differences-in-visual-motion-perception-and-neurotransmitter-concentrations-in-the-human-brain
#16
Tatsuto Takeuchi, Sanae Yoshimoto, Yasuhiro Shimada, Takanori Kochiyama, Hirohito M Kondo
Recent studies have shown that interindividual variability can be a rich source of information regarding the mechanism of human visual perception. In this study, we examined the mechanisms underlying interindividual variability in the perception of visual motion, one of the fundamental components of visual scene analysis, by measuring neurotransmitter concentrations using magnetic resonance spectroscopy. First, by psychophysically examining two types of motion phenomena-motion assimilation and contrast-we found that, following the presentation of the same stimulus, some participants perceived motion assimilation, while others perceived motion contrast...
February 19, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28043979/the-year-in-cardiology-2016-peripheral-circulation
#17
Marco De Carlo, Lucia Mazzolai, Eduardo Bossone, Marianne Brodmann, Antonio Micari, Maria Lorenza Muiesan, Jean-Baptiste Ricco, Eugenio Stabile, Giancarlo Agnelli, Victor Aboyans
No abstract text is available yet for this article.
January 2, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28034960/elevated-dna-oxidation-and-dna-repair-enzyme-expression-in-brain-white-matter-in-major-depressive-disorder
#18
Attila Szebeni, Katalin Szebeni, Timothy P DiPeri, Luke A Johnson, Craig A Stockmeier, Jessica D Crawford, Michelle J Chandley, Liza J Hernandez, Katherine C Burgess, Russell W Brown, Gregory A Ordway
BACKGROUND: Pathology of white matter in brains of patients with major depressive disorder (MDD) is well-documented, but the cellular and molecular basis of this pathology are poorly understood. METHODS: Levels of DNA oxidation and gene expression of DNA damage repair enzymes were measured in Brodmann area 10 (BA10) and/or amygdala (uncinate fasciculus) white matter tissue from brains of MDD (n=10) and psychiatrically normal control donors (n=13). DNA oxidation was also measured in BA10 white matter of schizophrenia donors (n=10) and in prefrontal cortical white matter from control rats (n=8) and rats with repeated stress-induced anhedonia (n=8)...
December 29, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27999541/parahippocampal-cortex-mediates-the-relationship-between-lutein-and-crystallized-intelligence-in-healthy-older-adults
#19
Marta K Zamroziewicz, Erick J Paul, Chris E Zwilling, Elizabeth J Johnson, Matthew J Kuchan, Neal J Cohen, Aron K Barbey
Introduction: Although, diet has a substantial influence on the aging brain, the relationship between dietary nutrients and aspects of brain health remains unclear. This study examines the neural mechanisms that mediate the relationship between a carotenoid important for brain health across the lifespan, lutein, and crystallized intelligence in cognitively intact older adults. We hypothesized that higher serum levels of lutein are associated with better performance on a task of crystallized intelligence, and that this relationship is mediated by gray matter structure of regions within the temporal cortex...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27972283/economic-analysis-of-endovascular-interventions-for-the-treatment-of-femoropopliteal-peripheral-artery-disease-in-austria
#20
J B Pietzsch, B P Geisler, M R Jaff, T Zeller, M Brodmann
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
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