Zobrazeno 1 - 10
of 776
pro vyhledávání: '"Ilmoniemi, Risto"'
Autor:
Wang, Boshuo, Peterchev, Angel V., Gaugain, Gabriel, Ilmoniemi, Risto J., Grill, Warren M., Bikson, Marom, Nikolayev, Denys
We define and explain the quasistatic approximation (QSA) as applied to field modeling for electrical and magnetic stimulation. Neuromodulation analysis pipelines include discrete stages, and QSA is applied specifically when calculating the electric
Externí odkaz:
http://arxiv.org/abs/2402.00486
Autor:
Souza, Victor H., Nieminen, Jaakko O., Tugin, Sergei, Koponen, Lari M., Ziemann, Ulf, Baffa, Oswaldo, Ilmoniemi, Risto J.
Publikováno v:
In Clinical Neurophysiology January 2025 169:23-32
Publikováno v:
In Brain Stimulation March-April 2024 17(2):184-193
Publikováno v:
In Brain Stimulation January-February 2024 17(1):10-18
Autor:
Iivanainen, Joonas, Mäkinen, Antti J., Zetter, Rasmus, Zevenhoven, Koos C. J., Ilmoniemi, Risto J., Parkkonen, Lauri
Thermal motion of charge carriers in a conducting object causes magnetic field noise that interferes with sensitive measurements nearby the conductor. In this paper, we describe a method to compute the spectral properties of the thermal magnetic nois
Externí odkaz:
http://arxiv.org/abs/2007.08963
Spatial sampling of MEG and EEG revisited: From spatial-frequency spectra to model-informed sampling
Autor:
Iivanainen, Joonas, Mäkinen, Antti J., Zetter, Rasmus, Stenroos, Matti, Ilmoniemi, Risto J., Parkkonen, Lauri
In this paper, we analyze spatial sampling of electro- (EEG) magnetoencephalography (MEG), where the electric or magnetic field is typically sampled on a curved surface such as the scalp. Using simulated measurements, we study the spatial-frequency c
Externí odkaz:
http://arxiv.org/abs/2006.02919
Autor:
Mäkinen, Antti J., Zetter, Rasmus, Iivanainen, Joonas, Zevenhoven, Koos C. J., Parkkonen, Lauri, Ilmoniemi, Risto J.
Publikováno v:
Journal of Applied Physics 128, 063906 (2020)
Surface currents provide a general way to model static magnetic fields in source-free volumes. To facilitate the use of surface currents in magneto-quasistatic problems, we have implemented a set of computational tools in a Python package named bfiel
Externí odkaz:
http://arxiv.org/abs/2005.10060
Autor:
Zetter, Rasmus, Mäkinen, Antti J., Iivanainen, Joonas, Zevenhoven, Koos C. J., Ilmoniemi, Risto J., Parkkonen, Lauri
We present a novel open-source Python software package, bfieldtools, for magneto-quasistatic calculations with current densities on surfaces of arbitrary shape. The core functionality of the software relies on a stream-function representation of surf
Externí odkaz:
http://arxiv.org/abs/2005.10056
Autor:
Hömmen, Peter, Mäkinen, Antti J., Hunold, Alexander, Machts, René, Haueisen, Jens, Zevenhoven, Koos C. J., Ilmoniemi, Risto J., Körber, Rainer
Magnetic fields associated with currents flowing in tissue can be measured non-invasively by means of zero-field-encoded ultra-low-field magnetic resonance imaging (ULF MRI) enabling current density imaging (CDI) and possibly conductivity mapping of
Externí odkaz:
http://arxiv.org/abs/2001.07178
Autor:
Iivanainen, Joonas, Mäkinen, Antti, Zetter, Rasmus, Stenroos, Matti, Ilmoniemi, Risto J., Parkkonen, Lauri
We present a theoretical framework for analyzing spatial sampling of fields in three-dimensional space. The framework bridges Shannon's sampling and information theory to Bayesian probabilistic inference and experimental design. Based on the theory,
Externí odkaz:
http://arxiv.org/abs/1912.05401