86 citations · 205 across the 8 of their papers we have counts for
8 papers
Modeling and simulation of electrodiffusion in dense reconstructions of cerebral tissue
Halvor Herlyng, Marius Causemann, Gaute T. Einevoll +3
Excitable tissue is fundamental to brain function, yet its study is complicated by extreme morphological complexity and the physiological processes governing its dynamics. Conseque…
Computing extracellular electric potentials from neuronal simulations
Torbjørn V. Ness, Geir Halnes, Solveig Næss +2
Measurements of electric potentials from neural activity have played a key role in neuroscience for almost a century, and simulations of neural activity is an important tool for un…
Finite element simulation of ionicelectrodiffusion in cellular geometries
A. J. Ellingsrud, A. Solbrå, G. T. Einevoll +2
Mathematical models for excitable cells are commonly based on cable theory, which considers a homogenized domain and spatially constant ionic concentrations. Although such models p…
Astrocytic Ion Dynamics: Implications for Potassium Buffering and Liquid Flow
Geir Halnes, Klas H. Pettersen, Leiv Øyehaug +2
We review modeling of astrocyte ion dynamics with a specific focus on the implications of so-called spatial potassium buffering, where excess potassium in the extracellular space (…
Functional effects of schizophrenia-linked genetic variants on intrinsic single-neuron excitability: A modeling study
Tuomo Mäki-Marttunen, Geir Halnes, Anna Devor +7
Background: Recent genome-wide association studies (GWAS) have identified a large number of genetic risk factors for schizophrenia (SCZ) featuring ion channels and calcium transpor…
The effect of ionic diffusion on extracellular potentials in neural tissue
Geir Halnes, Tuomo Mäki-Marttunen, Daniel Keller +2
In computational neuroscience, it is common to use the simplifying assumption that diffusive currents are negligible compared to Ohmic currents. However, endured periods of intense…
Electrodiffusive model for astrocytic and neuronal ion concentration dynamics
Geir Halnes, Ivar Østby, Klas H. Pettersen +2
Electrical neural signalling typically takes place at the time-scale of milliseconds, and is typically modeled using the cable equation. This is a good approximation for processes…
Light Rays at Optical Black Holes in Moving Media
I. Brevik, G. Halnes
Light experiences a non-uniformly moving medium as an effective gravitational field, endowed with an effective metric tensor , being the re…