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of 55
pro vyhledávání: '"Luria, Gianvittorio"'
We present a very simple yet powerful generalization of a previously described model and algorithm for estimation of multiple dipoles from magneto/electro-encephalographic data. Specifically, the generalization consists in the introduction of a log-u
Externí odkaz:
http://arxiv.org/abs/2006.04141
Autor:
Luria, Gianvittorio, Duran, Dunja, Visani, Elisa, Sommariva, Sara, Rotondi, Fabio, Sebastiano, Davide Rossi, Panzica, Ferruccio, Piana, Michele, Sorrentino, Alberto
Publikováno v:
Journal of Neuroscience Methods Volume 312, 15 January 2019, Pages 27-36
Background: Magneto- and Electro-encephalography record the electromagnetic field generated by neural currents with high temporal frequency and good spatial resolution, and are therefore well suited for source localization in the time and in the freq
Externí odkaz:
http://arxiv.org/abs/1808.08086
We deal with estimation of multiple dipoles from combined MEG and EEG time--series. We use a sequential Monte Carlo algorithm to characterize the posterior distribution of the number of dipoles and their locations. By considering three test cases, we
Externí odkaz:
http://arxiv.org/abs/1706.06089
Akademický článek
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Autor:
Luria, Gianvittorio
The present work provides a geometric approach to the calculus of variations in the presence of non-holonomic constraints. As far as the kinematical foundations are concerned, a fully covariant scheme is developed through the introduction of the conc
Externí odkaz:
https://hdl.handle.net/11572/368036
Publikováno v:
Int. J. Geom. Methods Mod. Phys. Vol. 12 (2015), 1550061
A geometric setup for constrained variational calculus is presented. The analysis deals with the study of the extremals of an action functional defined on piecewise differentiable curves, subject to differentiable, non-holonomic constraints. Special
Externí odkaz:
http://arxiv.org/abs/1503.08808
Publikováno v:
Inverse Problems 30 (2014) 045010
In the present paper, we develop a novel Bayesian approach to the problem of estimating neural currents in the brain from a fixed distribution of magnetic field (called \emph{topography}), measured by magnetoencephalography. Differently from recent s
Externí odkaz:
http://arxiv.org/abs/1305.4511
Publikováno v:
Int. J. Geom. Methods Mod. Phys. 08, 1723 (2011)
A gauge-invariant formulation of constrained variational calculus, based on the introduction of the bundle of affine scalars over the configuration manifold, is presented. In the resulting setup, the Lagrangian is replaced by a section of a suitable
Externí odkaz:
http://arxiv.org/abs/1101.5045
Within the geometrical framework developed in arXiv:0705.2362, the problem of minimality for constrained calculus of variations is analysed among the class of differentiable curves. A fully covariant representation of the second variation of the acti
Externí odkaz:
http://arxiv.org/abs/1006.3632
Akademický článek
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