| Gradient magnetic-field topography for dynamic changes of epileptic discharges. | |
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MedLine Citation:
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PMID: 17331481 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We developed gradient magnetic-field topography (GMFT) for magnetoencephalography (MEG). We plotted the Euclidean norms of gradient magnetic fields occurring at the centers of 102 sensors onto 49-point grids and projected these norms onto the MRI brain surface of a 12-year-old boy who presented with neocortical epilepsy secondary to a left temporal tumor. The peak gradient magnetic field located posterior to the tumor and correlated to MEG dipoles. The gradient magnetic field propagated to the temporo-parietal region and corresponded with spike locations on electrocorticography. GMFT revealed the location and distribution of spikes while avoiding the inverse problem. |
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Authors:
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Akira Hashizume; Koji Iida; Hiroshi Shirozu; Ryosuke Hanaya; Yoshihiro Kiura; Kaoru Kurisu; Hiroshi Otsubo |
Publication Detail:
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Type: Case Reports; Journal Article; Research Support, Non-U.S. Gov't Date: 2007-02-07 |
Journal Detail:
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Title: Brain research Volume: 1144 ISSN: 0006-8993 ISO Abbreviation: Brain Res. Publication Date: 2007 May |
Date Detail:
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Created Date: 2007-03-26 Completed Date: 2007-06-13 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0045503 Medline TA: Brain Res Country: Netherlands |
Other Details:
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Languages: eng Pagination: 175-9 Citation Subset: IM |
Affiliation:
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Department of Neurosurgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Hiroshima, 734-8551, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Brain Mapping* Child Epilepsy, Temporal Lobe / pathology, physiopathology* Humans Magnetic Resonance Imaging / methods Magnetoencephalography* Male Nonlinear Dynamics* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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