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https://www.readbyqxmd.com/read/29471101/on-object-selectivity-and-the-anatomy-of-the-human-fusiform-gyrus
#1
Kevin S Weiner, Vaidehi S Natu, Kalanit Grill-Spector
pFs is a functionally-defined region in the human brain that is involved in recognizing objects. A recent trend refers to pFs as the posterior fusiform sulcus, which is a neuroanatomical structure that does not exist. Here, we correct this mistake. To achieve this goal, we first recount the original definitions of pFs and then review the identification of sulci within and surrounding the fusiform gyrus (FG) including the mid-fusiform sulcus (MFS), which is a tertiary sulcus within the FG. We highlight that tertiary sulci, such as the MFS, are often absent from brain atlases, which complicates the accurate localization of functional regions, as well as the understanding of structural-functional relationships in ventral temporal cortex (VTC)...
February 19, 2018: NeuroImage
https://www.readbyqxmd.com/read/29471099/the-dynamics-of-error-processing-in-the-human-brain-as-reflected-by-high-gamma-activity-in-noninvasive-and-intracranial-eeg
#2
Martin Völker, Lukas D J Fiederer, Sofie Berberich, Jiří Hammer, Joos Behncke, Pavel Kršek, Martin Tomášek, Petr Marusič, Peter C Reinacher, Volker A Coenen, Moritz Helias, Andreas Schulze-Bonhage, Wolfram Burgard, Tonio Ball
Error detection in motor behavior is a fundamental cognitive function heavily relying on cortical information processing. Neural activity in the high-gamma frequency band (HGB) closely reflects such local cortical processing, but little is known about its role in error processing, particularly in the healthy human brain. Here we characterize the error-related response of the human brain based on data obtained with noninvasive EEG optimized for HGB mapping in 31 healthy subjects (15 females, 16 males), and additional intracranial EEG data from 9 epilepsy patients (4 females, 5 males)...
February 19, 2018: NeuroImage
https://www.readbyqxmd.com/read/29467408/prediction-complements-explanation-in-understanding-the-developing-brain
#3
REVIEW
Monica D Rosenberg, B J Casey, Avram J Holmes
A central aim of human neuroscience is understanding the neurobiology of cognition and behavior. Although we have made significant progress towards this goal, reliance on group-level studies of the developed adult brain has limited our ability to explain population variability and developmental changes in neural circuitry and behavior. In this review, we suggest that predictive modeling, a method for predicting individual differences in behavior from brain features, can complement descriptive approaches and provide new ways to account for this variability...
February 21, 2018: Nature Communications
https://www.readbyqxmd.com/read/29465821/quantitative-magnetic-resonance-spectroscopy-at-3t-based-on-the-principle-of-reciprocity
#4
Niklaus Zoelch, Andreas Hock, Anke Henning
Quantification of magnetic resonance spectroscopy signals using the phantom replacement method requires an adequate correction of differences between the acquisition of the reference signal in the phantom and the measurement in vivo. Applying the principle of reciprocity, sensitivity differences can be corrected at low field strength by measuring the RF transmitter gain needed to obtain a certain flip angle in the measured volume. However, at higher field strength the transmit sensitivity may vary from the reception sensitivity, which leads to wrongly estimated concentrations...
February 21, 2018: NMR in Biomedicine
https://www.readbyqxmd.com/read/29463867/optogenetic-tractography-for-anatomo-functional-characterization-of-cortico-subcortical-neural-circuits-in-non-human-primates
#5
S Senova, C Poupon, J Dauguet, H J Stewart, G P Dugué, C Jan, K Hosomi, G S Ralph, L Barnes, X Drouot, C Pouzat, J F Mangin, F Pain, I Doignon, R Aron-Badin, E Brouillet, E S Boyden, K A Mitrophanous, P Hantraye, S Palfi
Dissecting neural circuitry in non-human primates (NHP) is crucial to identify potential neuromodulation anatomical targets for the treatment of pharmacoresistant neuropsychiatric diseases by electrical neuromodulation. How targets of deep brain stimulation (DBS) and cortical targets of transcranial magnetic stimulation (TMS) compare and might complement one another is an important question. Combining optogenetics and tractography may enable anatomo-functional characterization of large brain cortico-subcortical neural pathways...
February 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29456487/the-discontinuous-galerkin-finite-element-method-for-solving-the-meg-and-the-combined-meg-eeg-forward-problem
#6
Maria Carla Piastra, Andreas Nüßing, Johannes Vorwerk, Harald Bornfleth, Robert Oostenveld, Christian Engwer, Carsten H Wolters
In Electro- (EEG) and Magnetoencephalography (MEG), one important requirement of source reconstruction is the forward model. The continuous Galerkin finite element method (CG-FEM) has become one of the dominant approaches for solving the forward problem over the last decades. Recently, a discontinuous Galerkin FEM (DG-FEM) EEG forward approach has been proposed as an alternative to CG-FEM (Engwer et al., 2017). It was shown that DG-FEM preserves the property of conservation of charge and that it can, in certain situations such as the so-called skull leakages , be superior to the standard CG-FEM approach...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29455391/focal-ischaemic-infarcts-expand-faster-in-cerebellar-cortex-than-cerebral-cortex-in-a-mouse-photothrombotic-stroke-model
#7
Nagarajesh Gorlamandala, Jasneet Parmar, Amanda J Craig, John M Power, Andrew J Moorhouse, Arun V Krishnan, Gary D Housley
It is generally accepted that the cerebellum is particularly vulnerable to ischaemic injury, and this may contribute to the high mortality arising from posterior circulation strokes. However, this has not been systematically examined in an animal model. This study compared the development and resolution of matched photothrombotic microvascular infarcts in the cerebellar and cerebral cortices in adult 129/SvEv mice of both sexes. The photothrombotic lesions were made using tail vein injection of Rose Bengal with a 532 nm laser projected onto a 2 mm diameter aperture over the target region of the brain (with skull thinning)...
February 17, 2018: Translational Stroke Research
https://www.readbyqxmd.com/read/29454970/increased-cerebrospinal-fluid-complement-c5-levels-in-major-depressive-disorder-and-schizophrenia
#8
Takashi Ishii, Kotaro Hattori, Tomoko Miyakawa, Kentaro Watanabe, Shinsuke Hidese, Daimei Sasayama, Miho Ota, Toshiya Teraishi, Hiroaki Hori, Sumiko Yoshida, Akihiko Nunomura, Kazuyuki Nakagome, Hiroshi Kunugi
Inflammation has been implicated in a variety of psychiatric disorders. We aimed to determine whether levels of complement C5 protein in the cerebrospinal fluid (CSF), which may reflect activation of the complement system in the brain, are altered in patients with major psychiatric disorders. Additionally, we examined possible associations of CSF C5 levels with clinical variables. Subjects comprised 89 patients with major depressive disorder (MDD), 66 patients with bipolar disorder (BPD), 96 patients with schizophrenia, and 117 healthy controls, matched for age, sex, and ethnicity (Japanese)...
February 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29440775/genetic-defects-in-mtdna-encoded-protein-translation-cause-pediatric-mitochondrial-cardiomyopathy-with-early-onset-brain-disease
#9
Rick Kamps, Radek Szklarczyk, Tom E Theunissen, Debby M E I Hellebrekers, Suzanne C E H Sallevelt, Iris B Boesten, Bart de Koning, Bianca J van den Bosch, Gajja S Salomons, Marisa Simas-Mendes, Rob Verdijk, Kees Schoonderwoerd, Irenaeus F M de Coo, Jo M Vanoevelen, Hubert J M Smeets
This study aims to identify gene defects in pediatric cardiomyopathy and early-onset brain disease with oxidative phosphorylation (OXPHOS) deficiencies. We applied whole-exome sequencing in three patients with pediatric cardiomyopathy and early-onset brain disease with OXPHOS deficiencies. The brain pathology was studied by MRI analysis. In consanguineous patient 1, we identified a homozygous intronic variant (c.850-3A > G) in the QRSL1 gene, which was predicted to cause abnormal splicing. The variant segregated with the disease and affected the protein function, which was confirmed by complementation studies, restoring OXPHOS function only with wild-type QRSL1...
February 13, 2018: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/29437957/normal-aging-induces-a1-like-astrocyte-reactivity
#10
Laura E Clarke, Shane A Liddelow, Chandrani Chakraborty, Alexandra E Münch, Myriam Heiman, Ben A Barres
The decline of cognitive function occurs with aging, but the mechanisms responsible are unknown. Astrocytes instruct the formation, maturation, and elimination of synapses, and impairment of these functions has been implicated in many diseases. These findings raise the question of whether astrocyte dysfunction could contribute to cognitive decline in aging. We used the Bac-Trap method to perform RNA sequencing of astrocytes from different brain regions across the lifespan of the mouse. We found that astrocytes have region-specific transcriptional identities that change with age in a region-dependent manner...
February 7, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29437855/identifying-the-role-of-complement-in-triggering-neuroinflammation-after-traumatic-brain-injury
#11
Ali Alawieh, E Farris Langley, Shannon Weber, DeAnna Adkins, Stephen Tomlinson
The complement system is implicated in promoting acute secondary injury after traumatic brain injury (TBI), but its role in chronic post-traumatic neuropathology remains unclear. Using various injury-site targeted complement inhibitors that block different complement pathways and activation products, we investigated how complement is involved in neurodegeneration and chronic neuroinflammation after TBI in a clinically relevant setting of complement inhibition. The current paradigm is that complement propagates post-TBI neuropathology predominantly through the terminal membrane attack complex (MAC), but the focus has been on acute outcomes...
February 6, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29434270/expression-and-replication-of-virus-like-circular-dna-in-human-cells
#12
Sebastian Eilebrecht, Agnes Hotz-Wagenblatt, Victor Sarachaga, Amelie Burk, Konstantina Falida, Deblina Chakraborty, Ekaterina Nikitina, Claudia Tessmer, Corinna Whitley, Charlotte Sauerland, Karin Gunst, Imke Grewe, Timo Bund
The consumption of bovine milk and meat is considered a risk factor for colon- and breast cancer formation, and milk consumption has also been implicated in an increased risk for developing Multiple Sclerosis (MS). A number of highly related virus-like DNAs have been recently isolated from bovine milk and sera and from a brain sample of a MS patient. As a genetic activity of these Acinetobacter-related bovine milk and meat factors (BMMFs) is unknown in eukaryotes, we analyzed their expression and replication potential in human HEK293TT cells...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29433444/a-novel-short-l-arginine-responsive-protein-coding-gene-laob-antiparallel-overlapping-to-a-cadc-like-transcriptional-regulator-in-escherichia-coli-o157-h7-sakai-originated-by-overprinting
#13
Sarah M Hücker, Sonja Vanderhaeghen, Isabel Abellan-Schneyder, Romy Wecko, Svenja Simon, Siegfried Scherer, Klaus Neuhaus
BACKGROUND: Due to the DNA triplet code, it is possible that the sequences of two or more protein-coding genes overlap to a large degree. However, such non-trivial overlaps are usually excluded by genome annotation pipelines and, thus, only a few overlapping gene pairs have been described in bacteria. In contrast, transcriptome and translatome sequencing reveals many signals originated from the antisense strand of annotated genes, of which we analyzed an example gene pair in more detail...
February 12, 2018: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29429571/ndufb8-mutations-cause-mitochondrial-complex-i-deficiency-in-individuals-with-leigh-like-encephalomyopathy
#14
Dorota Piekutowska-Abramczuk, Zahra Assouline, Lavinija Mataković, René G Feichtinger, Eliška Koňařiková, Elżbieta Jurkiewicz, Piotr Stawiński, Mirjana Gusic, Andreas Koller, Agnieszka Pollak, Piotr Gasperowicz, Joanna Trubicka, Elżbieta Ciara, Katarzyna Iwanicka-Pronicka, Dariusz Rokicki, Sylvain Hanein, Saskia B Wortmann, Wolfgang Sperl, Agnès Rötig, Holger Prokisch, Ewa Pronicka, Rafał Płoski, Giulia Barcia, Johannes A Mayr
Respiratory chain complex I deficiency is the most frequently identified biochemical defect in childhood mitochondrial diseases. Clinical symptoms range from fatal infantile lactic acidosis to Leigh syndrome and other encephalomyopathies or cardiomyopathies. To date, disease-causing variants in genes coding for 27 complex I subunits, including 7 mitochondrial DNA genes, and in 11 genes encoding complex I assembly factors have been reported. Here, we describe rare biallelic variants in NDUFB8 encoding a complex I accessory subunit revealed by whole-exome sequencing in two individuals from two families...
February 1, 2018: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29428549/importance-of-the-brain-corticosteroid-receptor-balance-in-metaplasticity-cognitive-performance-and-neuro-inflammation
#15
REVIEW
E R de Kloet, O C Meijer, A F de Nicola, R H de Rijk, M Joëls
Bruce McEwen's discovery of receptors for corticosterone in the rat hippocampus introduced higher brain circuits in the neuroendocrinology of stress. Subsequently, these receptors were identified as mineralocorticoid receptors (MRs) that are involved in appraisal processes, choice of coping style, encoding and retrieval. The MR-mediated actions on cognition are complemented by slower actions via glucocorticoid receptors (GRs) on contextualization, rationalization and memory storage of the experience. These sequential phases in cognitive performance depend on synaptic metaplasticity that is regulated by coordinate MR- and GR activation...
February 8, 2018: Frontiers in Neuroendocrinology
https://www.readbyqxmd.com/read/29425697/descriptive-findings-of-the-va-polytrauma-rehabilitation-centers-tbi-model-systems-national-database
#16
Susan Ropacki, Risa Nakase-Richardson, Leah Farrell-Carnahan, Greg J Lamberty, Xinyu Tang
OBJECTIVE: Present initial descriptive findings from the Veterans Affairs (VA) Polytrauma Rehabilitation Centers (PRC) Traumatic Brain Injury (TBI) Model Systems (MS) National Database. DESIGN: Prospective cohort study. SETTING: VA PRC TBIMS National Database. PARTICIPANTS: 712 service members and veterans with TBI who consented to participate between January 2010 and June 2015. INTERVENTIONS: Not applicable...
February 6, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29425056/human-brain-trauma-severity-is-associated-with-lectin-complement-pathway-activation
#17
Daiana De Blasio, Stefano Fumagalli, Franca Orsini, Laura Neglia, Carlo Perego, Fabrizio Ortolano, Elisa R Zanier, Edoardo Picetti, Marco Locatelli, Nino Stocchetti, Luca Longhi, Peter Garred, Maria-Grazia De Simoni
We explored the involvement of the lectin pathway of complement in post-traumatic brain injury (TBI) pathophysiology in humans. Brain samples were obtained from 28 patients who had undergone therapeutic contusion removal, within 12 h (early) or from >12 h until five days (late) from injury, and from five non-TBI patients. Imaging analysis indicated that lectin pathway initiator molecules (MBL, ficolin-1, ficolin-2 and ficolin-3), the key enzymes MASP-2 and MASP-3, and the downstream complement components (C3 fragments and TCC) were present inside and outside brain vessels in all contusions...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29423572/integrating-predictive-frameworks-and-cognitive-models-of-face-perception
#18
REVIEW
Sabrina Trapp, Stefan R Schweinberger, William G Hayward, Gyula Kovács
The idea of a "predictive brain"-that is, the interpretation of internal and external information based on prior expectations-has been elaborated intensely over the past decade. Several domains in cognitive neuroscience have embraced this idea, including studies in perception, motor control, language, and affective, social, and clinical neuroscience. Despite the various studies that have used face stimuli to address questions related to predictive processing, there has been surprisingly little connection between this work and established cognitive models of face recognition...
February 8, 2018: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/29422978/dna-methylation-alterations-in-ipsc-and-hesc-derived-neurons-potential-implications-for-neurological-disease-modeling
#19
Laura de Boni, Gilles Gasparoni, Carolin Haubenreich, Sascha Tierling, Ina Schmitt, Michael Peitz, Philipp Koch, Jörn Walter, Ullrich Wüllner, Oliver Brüstle
Background: Genetic predisposition and epigenetic alterations are both considered to contribute to sporadic neurodegenerative diseases (NDDs) such as Parkinson's disease (PD). Since cell reprogramming and the generation of induced pluripotent stem cells (iPSCs) are themselves associated with major epigenetic remodeling, it remains unclear to what extent iPSC-derived neurons lend themselves to model epigenetic disease-associated changes. A key question to be addressed in this context is whether iPSC-derived neurons exhibit epigenetic signatures typically observed in neurons derived from non-reprogrammed human embryonic stem cells (hESCs)...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29421990/measurement-of-soluble-cd59-in-csf-in-demyelinating-disease-evidence-for-an-intrathecal-source-of-soluble-cd59
#20
Wioleta M Zelek, Lewis M Watkins, Owain W Howell, Rhian Evans, Sam Loveless, Neil P Robertson, Marijke Beenes, Loek Willems, Ricardo Brandwijk, B Paul Morgan
BACKGROUND: CD59, a broadly expressed glycosylphosphatidylinositol-anchored protein, is the principal cell inhibitor of complement membrane attack on cells. In the demyelinating disorders, multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD), elevated complement protein levels, including soluble CD59 (sCD59), were reported in cerebrospinal fluid (CSF). OBJECTIVES: We compared sCD59 levels in CSF and matched plasma in controls and patients with MS, NMOSD and clinically isolated syndrome (CIS) and investigated the source of CSF sCD59 and whether it was microparticle associated...
February 1, 2018: Multiple Sclerosis: Clinical and Laboratory Research
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