Literature DB >> 2641260

Improved accuracy of MEG localization in the temporal region with inclusion of volume current effects.

D F Rose1, E Ducla-Soares, S Sato.   

Abstract

We studied the magnetic field maps generated by six dipoles in the temporal region of a plastic skull filled with conducting gel. The data were processed with two mathematical models. One, using Biot-Savart's law, considered only the magnetic field generated by a localized current dipole, and the other considered a dipole in a sphere and included volume current effects. The contribution of volume current effects to the MEG maps was significant. The localizing capability of MEG improved from an average distance of 2.9 cm to 0.9 cm when volume current effects were considered.

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Year:  1989        PMID： 2641260     DOI： 10.1007/bf01129580

Source DB:  PubMed          Journal:  Brain Topogr        ISSN： 0896-0267            Impact factor:   3.020


  22 in total

1.  The magnetic field of epileptic spikes agrees with intracranial localizations in complex partial epilepsy.

Authors:  W W Sutherling; P H Crandall; L D Cahan; D S Barth
Journal:  Neurology       Date:  1988-05       Impact factor: 9.910

2.  Cerebral neuromagnetic responses evoked by short auditory stimuli.

Authors:  M Sams; M Hämäläinen; A Antervo; E Kaukoranta; K Reinikainen; R Hari
Journal:  Electroencephalogr Clin Neurophysiol       Date:  1985-10

Review 3.  Neuromagnetic functional localization: principles, state of the art, and perspectives.

Authors:  G L Romani; P Rossini
Journal:  Brain Topogr       Date:  1988       Impact factor: 3.020

4.  Tonotopic organization of the human auditory cortex revealed by transient auditory evoked magnetic fields.

Authors:  C Pantev; M Hoke; K Lehnertz; B Lütkenhöner; G Anogianakis; W Wittkowski
Journal:  Electroencephalogr Clin Neurophysiol       Date:  1988-02

Review 5.  Cerebral magnetic fields.

Authors:  R Hari; R J Ilmoniemi
Journal:  Crit Rev Biomed Eng       Date:  1986

6.  Analysis of magnetoencephalographic data using the homogeneous sphere model: empirical tests.

Authors:  B S Janday; S J Swithenby
Journal:  Phys Med Biol       Date:  1987-01       Impact factor: 3.609

7.  Inverse solutions based on MEG and EEG applied to volume conductor analysis.

Authors:  C J Stok; J W Meijs; M J Peters
Journal:  Phys Med Biol       Date:  1987-01       Impact factor: 3.609

8.  Feasibility of the homogeneous head model in the interpretation of neuromagnetic fields.

Authors:  M S Hämäläinen; J Sarvas
Journal:  Phys Med Biol       Date:  1987-01       Impact factor: 3.609

Review 9.  Magnetoencephalography and epilepsy research.

Authors:  D F Rose; P D Smith; S Sato
Journal:  Science       Date:  1987-10-16       Impact factor: 47.728

10.  Tonotopic organization of the human auditory cortex.

Authors:  G L Romani; S J Williamson; L Kaufman
Journal:  Science       Date:  1982-06-18       Impact factor: 47.728
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  3 in total

1.  Characterization of gastric electrical activity using magnetic field measurements: a simulation study.

Authors:  J H K Kim; L A Bradshaw; A J Pullan; L K Cheng
Journal:  Ann Biomed Eng       Date:  2009-09-23       Impact factor: 3.934

2.  Volume conductor effects on simulated magnetogastrograms.

Authors:  Wenlian Qiao; Rié Komuro; Andrew J Pullan; Leo K Cheng
Journal:  Conf Proc IEEE Eng Med Biol Soc       Date:  2009

Review 3.  Advantages and limitations of magnetic source imaging.

Authors:  S J Williamson; Z L Lü; D Karron; L Kaufman
Journal:  Brain Topogr       Date:  1991       Impact factor: 3.020
  3 in total

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