Browsing Fysisk institutt by Title

Now showing items 273-292 of 3667

  • Biophysical network modeling of the dLGN circuit: Effects of cortical feedback on spatial response properties of relay cells 
    Martínez-Cañada, Pablo; Mobarhan, Milad; Halnes, Geir; Fyhn, Marianne; Morillas, Christian; Pelayo, Francisco; Einevoll, Gaute (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Despite half-a-century of research since the seminal work of Hubel and Wiesel, the role of the dorsal lateral geniculate nucleus (dLGN) in shaping the visual signals is not properly understood. Placed on route from retina ...
  • Biophysical Network Modelling of the dLGN Circuit: Different Effects of Triadic and Axonal Inhibition on Visual Responses of Relay Cells 
    Heiberg, Thomas; Hagen, Espen; Halnes, Geir; Einevoll, Gaute (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    Despite its prominent placement between the retina and primary visual cortex in the early visual pathway, the role of the dorsal lateral geniculate nucleus (dLGN) in molding and regulating the visual signals entering the ...
  • Biophysical Psychiatry—How Computational Neuroscience Can Help to Understand the Complex Mechanisms of Mental Disorders. 
    Mäki-Marttunen, Tuomo; Kaufmann, Tobias; Elvsåshagen, Torbjørn; Devor, Anna; Djurovic, Srdjan; Westlye, Lars Tjelta; Linne, Marja-Leena; Rietschel, Marcella; Schubert, Dirk; Borgwardt, Stefan; Efrim-Budisteanu, Magdalena; Bettella, Francesco; Halnes, Geir; Hagen, Espen; Næss, Solveig; Ness, Torbjørn V; Moberget, Torgeir; Metzner, Christoph; Edwards, Andrew G.; Fyhn, Marianne; Dale, Anders M.; Einevoll, Gaute T.; Andreassen, Ole Andreas (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    The brain is the most complex of human organs, and the pathophysiology underlying abnormal brain function in psychiatric disorders is largely unknown. Despite the rapid development of diagnostic tools and treatments in ...
  • Biophysically detailed forward modeling of the neural origin of EEG and MEG signals 
    Næss, Solveig; Halnes, Geir; Hagen, Espen; Hagler, Donald J.; Dale, Anders M.; Einevoll, Gaute; Ness, Torbjørn Vefferstad (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Electroencephalography (EEG) and magnetoencephalography (MEG) are among the most important techniques for non-invasively studying cognition and disease in the human brain. These signals are known to originate from cortical ...
  • Birkeland currents derived from EISCAT measurements: two case studies 
    Normann, Klaus (Master thesis / Masteroppgave, 2018)
    Measurements of ion velocities by the Svalbard EISCAT Radar (ESR) has been used to calculate Birkeland current densities. Birkeland currents are field-aligned currents flowing along Earth’s magnetic field lines at high ...
  • The Black Hole Information Paradox: Origins and Recent Insights 
    Olsen, William Eivik (Master thesis / Masteroppgave, 2022)
  • Bloch Sphere Analysis of Pure Phase Decoherence in a Ring SystemRestricted Access 
    Stalder, Simen Tobias Stenstrøm (Master thesis / Masteroppgave, 2019)
  • Blowing the Viscoelastic Trumpet. Experiment Design for Mapping Stress-Strain Patterns in Viscoelastic Hydrofracture 
    Bertelsen, Håvard Svanes (Master thesis / Masteroppgave, 2014)
    Magma is the foremost contributor to transporting mass and heat through the Earth's crust and knowledge of its ascent mechanics is of great importance for understanding geological processes. Magma intrusions are linked ...
  • Boron-implanted 3C-SiC for intermediate band solar cells 
    Ma, Quanbao; Galeckas, Augustinas; Azarov, Alexander; Thøgersen, Annett; Carvalho, Patricia; Wright, Daniel Nilsen; Diplas, Spyridon; Løvvik, Ole Martin; Jokubavicius, Valdas; Liu, Xinyu; Sun, Jianwu; Syväjärvi, Mikael; Svensson, Bengt Gunnar (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
    Sublimation-grown 3C-SiC crystals were implanted with 2 atomic percent of boron ions at elevated temperature (400 °C) using multiple energies (100 to 575 keV) with a total dose of 8.5×1016 atoms/cm2. The samples were then ...
  • Bose-Einstein condensation in trapped bosons: A quantum Monte Carlo analysis using OpenCL and GPU programming 
    Nikolaisen, Ivar Ursin (Master thesis / Masteroppgave, 2011)
  • Brain amyloid and vascular risk are related to distinct white matter hyperintensity patterns 
    Pålhaugen, Lene; Sudre, Carole H; Teceläo, Sandra Raquel Ramos; Nakling, Arne; Almdahl, Ina Selseth; Kalheim, Lisa Flem; Cardoso, M Jorge; Johnsen, Stein Harald; Rongve, Arvid; Aarsland, Dag; Bjørnerud, Atle; Selnes, Per; Fladby, Tormod (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    White matter hyperintensities (WMHs) are associated with vascular risk and Alzheimer’s disease. In this study, we examined relations between WMH load and distribution, amyloid pathology and vascular risk in 339 controls ...
  • Brain Modeling ToolKit: An open source software suite for multiscale modeling of brain circuits 
    Dai, Kael; Gratiy, Sergey L.; Billeh, Yazan; Xu, Richard; Cai, Binghuang; Cain, Nicholas; Rimehaug, Atle Eskeland; Stasik, Alexander Johannes; Einevoll, Gaute; Mihalas, Stefan; Koch, Christof; Arkhipov, Anton (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Experimental studies in neuroscience are producing data at a rapidly increasing rate, providing exciting opportunities and formidable challenges to existing theoretical and modeling approaches. To turn massive datasets ...
  • Brann- og Gassdetektorer : Analyser for prediktivt vedlikeholdRestricted Access 
    Nguyen, May van (Master thesis / Masteroppgave, 2011)
  • Bredbåndsaksess og internettjenester via satellitt : - tekniske og økonomiske utfordringer - 
    Parmar, Satvir (Master thesis / Hovedoppgave, 2003)
    Det har den siste tiden (2001-2003)vært stor fokus på bredbåndsutrulling i Norge og også resten av verden. Målet har vært å kunne tilby aksessteknologier og teknologiske plattformer som kan nå ut til alle innbyggere i et ...
  • Bridging aero-fracture evolution with the characteristics of the acoustic emissions in a porous medium 
    Turkaya, Semih; Toussaint, Renaud; Eriksen, Fredrik Kvalheim; Zecevic, Megan; Daniel, Guillaume; Flekkøy, Eirik Grude; Måløy, Knut Jørgen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
    The characterization and understanding of rock deformation processes due to fluid flow is a challenging problem with numerous applications. The signature of this problem can be found in Earth Science and Physics, notably ...
  • Bridging Quantum Mechanics and Molecular Dynamics with Artificial Neural Networks 
    Dragly, Svenn-Arne (Master thesis / Masteroppgave, 2014)
    In this thesis, we explore how a classical potential can be constructed by fitting an artificial neural network to the potential energy surface of an ab initio calculation. A Hartree-Fock implementation is explained in ...
  • Broad Diversity of Near-Infrared Single-Photon Emitters in Silicon 
    Durand, A.; Baron, Y.; Redjem, W.; Herzig, T.; Benali, A.; Pezzagna, S.; Meijer, J.; Kuznetsov, Andrej; Gérard, J.-M.; Robert-Philip, I.; Abbarchi, M.; Jacques, V.; Cassabois, G.; Dréau, A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    We report the detection of individual emitters in silicon belonging to seven different families of optically active point defects. These fluorescent centers are created by carbon implantation of a commercial silicon-on-insulator ...
  • Broad luminescence from donor-complexed LiZn and NaZn acceptors in ZnO 
    Frodason, Ymir Kalmann; Johansen, Klaus Magnus H; Galeckas, Augustinas; Vines, Lasse (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2019)
    Zn substitutional lithium ( Li Zn ) and sodium ( Na Zn ) acceptors and their complexes with common donor impurities ( Al Zn , Hi, and HO) in ZnO have been studied using hybrid functional calculations. The results show ...
  • Bulk In2O3 crystals grown by chemical vapour transport: a combination of XPS and DFT studies 
    Zatsepin, Dmitry A; Boukhvalov, Danil W; Zatsepin, Anatoly F; Vines, Lasse; Gogova, Daniela; Shur, Vladimir Ya; Esin, Alexander A (Journal article / Tidsskriftartikkel / SubmittedVersion, 2019)
    High purity In2O3 crystals were synthesized by the chemical vapour transport (CVT) as confirmed by X-ray Photoelectron Spectroscopy (XPS) using survey, core-levels and valence band scans of the samples. Further, high energy ...
  • Bulk β-Ga2O3 with (010) and (201) surface orientation: Schottky contacts and point defects 
    Ingebrigtsen, Mads Eide; Vines, Lasse; Alfieri, G; Mihaila, A.; Badstübner, U.; Svensson, Bengt Gunnar; Kuznetsov, Andrej (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    Electrical properties of Schottky contacts of high work-function metals (Pd, Au, and Ni) on (010) and (201) oriented β-Ga2O3 were investigated. Current-voltage characteristics reveal that all the contacts exhibit high ...