Interpreting magnetic fields of the brain: minimum norm estimates

  title={Interpreting magnetic fields of the brain: minimum norm estimates},
  author={Matti S. H{\"a}m{\"a}l{\"a}inen and Risto J. Ilmoniemi},
  journal={Medical \& Biological Engineering \& Computing},
The authors have applied estimation theory to the problem of determining primary current distributions from measured neuromagnetic fields. In this procedure, essentially nothing is assumed about the source currents, except that they are spatially restricted to a certain region. Simulation experiments show that the results can describe the structure of the current flow fairly well. By increasing the number of measurements, the estimate can be made more localised. The current distributions may be… 

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  • C. Campi
  • Computer Science
    2020 IEEE 20th Mediterranean Electrotechnical Conference ( MELECON)
  • 2020
A modified version of the Particle Filter employed so far for MEG data analysis is proposed, where the support of the sources is not more fixed to be a dipole but can change back and forth to be distributed, adapting itself among the time samples to the best configuration.



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